End-tab vs. top-tab — what’s the difference?

End-tab folders show the tab on the long side and are used on open-shelf systems; top-tab folders show the tab along the top edge and are designed for drawer filing.

When should I choose classification folders?

Choose classification folders when you need built-in dividers and 2-prong fasteners to separate sections within one file—ideal for medical charts, legal matters, and case files.

Letter or legal size — how do I pick?

Letter (8.5\" × 11\") fits standard documents; legal (8.5\" × 14\") fits longer forms. Match the folder to both your documents and storage equipment.

What tab and material options are available?

Tabs include full-cut, 1/2-cut, or 1/3-cut (assorted positions). Materials range from 11-pt to 18-pt manila, with optional reinforced (2-ply) tabs for added durability.

Can I add fasteners, pockets, or expansion?

Yes—add 2\" bonded fasteners (various positions), pockets/jackets, and expansion gussets (e.g., 3/4\" to 2\"+). Check each product’s options for capacity and placement.

Do you offer volume pricing or custom printing?

We offer bulk price breaks and custom printing (logos, lines, colors). Call (800) 810-3453 for a quote.

What safety labels should I look for on school and early-childhood items?

For children’s products, look for CPSIA compliance and a Children’s Product Certificate (CPC). Art materials should be labeled to ASTM D-4236; many also carry ACMI’s “AP” (non-toxic) or “CL” seals. These help confirm proper cautionary labeling and third-party testing where required.

How do I pick classroom furniture across grade levels?

Favor adjustable-height desks/tables and seating tested to ANSI/BIFMA X6.1 for educational use. Check manufacturer grade/height charts; adjustable ranges let you cover multiple grades with one model and simplify purchasing and spares.

What’s the best way to organize supplies and centers?

Use latching, stackable bins (clear for quick ID; colors for zones/subjects). Add label holders on bins and shelves, and keep a posted color key so students can reset the room independently.

How do I choose learning games and manipulatives by age?

Match to the stated age/grade band and learning goals (fine motor, numeracy, literacy). For early childhood, prioritize oversized pieces, wipe-clean surfaces, and non-toxic finishes.

What should I consider in a charging/tech cart?

Count devices and case sizes; verify slot width/height, cable management, ventilation, and locking doors. If devices support fast-charge (e.g., USB-C PD), confirm the cart’s power specs and total charging wattage.

Do you support school POs, bulk pricing, or custom printing?

Yes—volume pricing and custom imprinting (school name, mascot, subject headers) are available. Call (800) 810-3453.

Sheet vs. roll labels — what’s the difference?

Sheet labels (letter-size) run through laser/inkjet printers; roll labels feed through thermal or dedicated label printers.

Permanent or removable adhesive?

Permanent adhesives are best for long-term filing; removable adhesives peel away cleanly from most surfaces for temporary notes or re-use.

Will these labels work in my printer?

Check each item’s spec for “laser,” “inkjet,” or “thermal.” Avoid running inkjet-only sheets through a laser printer.

How do I match the label size to folder tabs or binder spines?

Measure the printable area of your tab or spine and match to the label’s width/height. If unsure, choose a slightly smaller label for clean alignment.

Can I get preprinted sequences or color bars?

Yes—choose preprinted sets (A-Z, 0-9, months) or request custom colors/text to match your filing system.

Do you have templates?

We provide size specifications and many customers use common label templates. If you need help aligning, call (800) 810-3453.

What do 5-, 8-, 10-, or 12-tab sets mean?

That’s the number of tabs per set. More tabs provide finer organization; fewer tabs give larger, easier-to-read tabs.

Paper vs. poly — which should I choose?

Paper (often with Mylar-reinforced tabs) is economical and easy to write on; poly resists tears and moisture for heavy use and frequent handling.

Are the tabs printable?

Some tabs are hand-write only; others are laser/inkjet printable. Check each product for “printable” support and printer compatibility.

Will they fit my binder?

Choose letter (8.5\" × 11\") for most 3-ring binders or legal (8.5\" × 14\") for longer documents. Many options are pre-punched for standard rings.

Can I mix preprinted and blank tabs?

Yes—use a preprinted core set and add blank or custom tabs for sections unique to your workflow.

Do you make custom tab sets?

Yes—tab titles, colors, and sheet stock can be customized. Call (800) 810-3453.

Which paper weight and brightness should I choose?

Use 20 lb / 75 gsm, 92-brightness for everyday printing; step up to 24–28 lb and 96+ brightness for presentations and double-sided color. If you print heavy coverage or duplex often, the thicker stock helps reduce show-through. Always confirm your printer’s supported paper weights.

Round-ring vs. D-ring binders — what’s the difference?

D-ring binders hold more paper at the same spine width and keep pages lying flatter, which reduces edge wear. Round-rings are economical for smaller sets. Pick capacity based on sheet count and how often you turn pages.

What does “sheet capacity” mean on staplers and hole punches?

It’s measured using standard 20 lb copy paper. If you use heavier paper, expect a lower effective capacity. For shared spaces, choose high-capacity staplers/punches to avoid jams and downtime.

Will labels, envelopes, and mailers work with my printer?

Check each item’s spec for “laser,” “inkjet,” or “thermal.” Laser-safe adhesives resist heat; some inkjet-only sheets shouldn’t go through laser fusers. Use your printer’s label or heavy-stock setting for best feed and adhesion.

How do I choose mailers and shipping boxes?

Bubble or poly mailers are great for lightweight, non-fragile contents; corrugated boxes protect heavier or delicate items. Match interior dimensions to your contents, add cushioning if needed, and choose stronger board as weight increases.

Do you offer eco-conscious options or bulk pricing?

Many items are available with recycled content or reduced-waste packaging, and we offer volume price breaks. Call (800) 810-3453 for large-order help or product guidance.

What ball sizes should I choose for different ages?

Use age-appropriate sizes for safer, more successful play. Common guidelines include: Basketball—Size 5 (27.5\") youth, Size 6 (28.5\") intermediate, Size 7 (29.5\") official. Soccer—Size 3 up to ~8 years, Size 4 ~8–12, Size 5 ~12+. Volleyball—Regulation balls for teens/adults; lighter training balls for younger players. Always check the product page for the manufacturer’s recommended age range.

Indoor vs. outdoor — which materials hold up best?

Composite or rubber-covered balls and poly cones hold up well outdoors; leather and finer composites are best indoors. For markers, look for UV-stable plastics; for goals, choose powder-coated frames and weather-resistant nets for outdoor use.

How many pinnies, cones, or markers do I need?

For classes and drills, packs of 12 are a good start; 24–36 pieces cover full-class activities and multiple stations. Choose mixed colors for quick team splits and field zones.

Tips for storage and care?

Use ventilated ball bags or carts, wipe down gear after outdoor use, and avoid prolonged heat/sun in storage. Inflate balls to the manufacturer’s recommendations and check pressure periodically to extend lifespan.

Are items latex-free and school-safe?

Many products are offered in latex-free or phthalate-free materials. Look for those callouts on the product page. Children’s items may include compliance statements on labeling; review those details if you’re purchasing for younger ages.

Do you support bulk orders or custom printing (team names)?

Yes—volume pricing and custom imprinting are available on many items. Call (800) 810-3453 for a quote or assistance with large sets.

What is the difference between FireKing vertical and lateral file cabinets?

Vertical file cabinets are deeper and narrower, making them a good fit for offices with limited wall space. Lateral file cabinets are wider and allow side-to-side filing, which can make document access easier and provide more filing width per drawer.

What can I store in a FireKing fireproof file cabinet?

FireKing cabinets are commonly used to store paper files, legal documents, medical records, financial records, contracts, personnel files, and other important business paperwork that needs organized fire-resistant storage.

Are FireKing cabinets only for paper records?

Many FireKing products are primarily designed for paper document protection, but some models may also be used for storing valuables or other office materials. Always review the specific product details and manufacturer recommendations to confirm the intended storage use for each model.

How do I choose between a FireKing safe, file cabinet, or storage cabinet?

Choose a fireproof file cabinet if you need organized drawer-based filing for records. Choose a safe if you need compact secure storage for documents, cash, or valuables. Choose a fireproof storage cabinet if you need shelf storage for binders, boxed records, supplies, or larger office materials.

What sizes are available in FireKing cabinets?

FireKing products are available in several sizes and configurations, including vertical file cabinets, lateral file cabinets, safes, card file cabinets, and storage cabinets. Available sizes, number of drawers, and overall dimensions vary by model.

Are FireKing cabinets used in offices, medical facilities, and government records storage?

Yes. FireKing cabinets are commonly used in offices, healthcare facilities, legal environments, schools, and government agencies where important records need secure, organized, fire-resistant storage.

Can I buy FireKing cabinets in bulk or get help choosing the right model?

Yes. We can help with product selection, bulk orders, and larger project needs. If you need assistance comparing FireKing file cabinets, safes, or storage cabinets, call (800) 810-3453.

Do you offer free shipping?

Yes—free ground shipping on orders of $99+.

What are your shipping rates?

Labels-only orders under $40 ship for $6.95. All other orders ship for a flat $14.95.

Do you offer bulk discounts?

Yes—volume pricing is available on many items. Contact us for a quote or large-order assistance.

Do you accept purchase orders (POs)?

Yes—we accept POs from schools and government agencies. If you need terms or documentation, please reach out.

Where can I read your full Shipping and Return policies?

See our Shipping Policy and Return Policy pages for complete details.

How can I contact you?

Call (800) 810-3453 or use our Contact Us form.

Knob Screws for Hand-Adjusted Fastening

Knob Screws

Knob screws are hand-operated threaded fasteners used to tighten, adjust, secure, or clamp compatible equipment and machine components without a separate tool. This category includes four-prong aluminum hand knob screws for maintenance and machine-shop tasks, plus thermoplastic hand knobs with integrated screws for hand-adjusted assemblies.

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Morton Machine Works

Aluminum Four-Prong Hand Knob Screw, 1/2-13 Thread, 3 in. Thread Length

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$15.49

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This aluminum hand knob screw gives operators a hand-adjustable fastening option for equipment and machine hardware. Its four-prong handle provides a grip for tightening or loosening threaded...

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Morton Machine Works

Aluminum Four-Prong Hand Knob Screw, 1/4-20 Thread, 1-3/4 in Thread Length

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$8.59

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This aluminum four-prong hand knob screw is designed for users who need a hand-operated threaded fastener for adjustments and securement. Its knob handle allows the screw to be turned by hand without...

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Morton Machine Works

Aluminum Four-Prong Hand Knob Screw, 1/4-20 Thread, 3 in. Thread Length

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$9.39

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This aluminum four-prong hand knob screw is designed for operators and maintenance teams who need a hand-tightened threaded fastener. Its knob handle provides a manual grip for fastening and...

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Morton Machine Works

Aluminum Four-Prong Hand Knob Screw, 3/8-16 Thread, 3 in. Thread Length

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$11.74

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This hand knob screw provides a hand-operated fastening point for commercial buyers who need to tighten or adjust components without a separate tool. Its four-prong aluminum handle supports a secure...

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Morton Machine Works

Aluminum Four-Prong Hand Knob Screw, 5/16-18 Thread, 1-3/4 in. Thread Length

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This aluminum hand knob screw gives equipment operators and maintenance teams a hand-adjustable fastening option for threaded components. Its four-prong handle helps users turn the screw without a...

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Morton Machine Works

Aluminum Four-Prong Hand Knob Screw, 5/8-11 Thread

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This aluminum hand knob screw gives machine shop and maintenance professionals a hand-operated fastening point for adjustments and clamping tasks. Its four-prong handle provides a grip for turning...

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Morton Machine Works

Black Thermoplastic Hand Knob with M8 x 1.25 Stainless Steel Screw

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This hand knob gives equipment operators a convenient manual grip for tightening or adjusting threaded components. It combines a black thermoplastic knob with a stainless steel screw for machine...

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Morton Machine Works

Black Thermoplastic Hand Knob, M8 x 1.25 Stainless Steel Screw

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This hand knob provides a hand-operated fastening point for equipment users and maintenance teams. Its integrated threaded screw allows the knob to be turned by hand when making adjustments or...

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Helpful Buying Guide

Choose Knob Screws for Compatible Hand Adjustments

A knob screw combines a hand grip with an integrated threaded screw, giving operators and maintenance teams a practical way to turn compatible fasteners by hand. Start with the thread size and pitch required by the mounting point, then compare thread length, knob style, and screw material represented by the available options.

Visual Guide

Popular examples in this category

Aluminum Four-Prong Hand Knob Screw, 3/8-16 Thread, 3 in. Thread LengthWBB2292142

Black Thermoplastic Hand Knob with M8 x 1.25 Stainless Steel ScrewWBB2292108

Aluminum Four-Prong Hand Knob Screw, 1/2-13 Thread, 3 in. Thread LengthWBB2292143

Aluminum Four-Prong Hand Knob Screw, 5/16-18 Thread, 1-3/4 in. Thread LengthWBB2292106

Use Cases

Hand-operated fastening and adjustment

Use knob screws where a threaded connection needs to be tightened, loosened, adjusted, secured, or clamped by hand.

How to Choose

Match the thread first

Select the exact compatible thread size and pitch, then choose the thread length needed for the fastening arrangement.

Applications

Equipment, machine hardware, and maintenance

These options are suited to hand-adjusted equipment components, machine hardware, maintenance work, and applicable clamping tasks.

Additional Info

Compare handle and screw construction

Four-prong aluminum models use black oxide steel screws with spring-pin retention. Thermoplastic models are paired with stainless steel screws.

5Inch thread sizes

From 1/4-20 through 5/8-11.

M8 x 1.25Metric thread option

Available on thermoplastic hand knobs.

1-3/4 to 3 in.Aluminum thread lengths

Represented threaded reach options.

40 mmKnob diameter

Specified for one thermoplastic option.

Comparison Guide

Compare the Available Knob Screw Types

Use thread compatibility and required reach as the primary comparison points, then select the knob and screw construction that fits the assembly.

Product type	Thread options	Thread length and construction
Four-prong aluminum hand knob screw	1/4-20, 5/16-18, 3/8-16, 1/2-13, or 5/8-11	1-3/4 in. or 3 in.; black oxide steel screw; spring-pin retention
Thermoplastic hand knob with screw	M8 x 1.25	20 mm or 40 mm; stainless steel screw
Hand-grip comparison	Four-prong aluminum or thermoplastic knob	Four-prong models provide grip points; one thermoplastic option has a 40 mm knob diameter

Planning Guide

Plan the right fit before choosing

Start with thread compatibility

Choose the matching thread size and pitch

Knob screws must match the threaded component in the assembly. The represented options include inch thread sizes and metric M8 x 1.25 options.

1/4-20, 5/16-18, 3/8-16, 1/2-13, and 5/8-11 thread sizes are represented.
Metric options use M8 x 1.25 threads.
Do not substitute one thread size or pitch for another.

Plan for threaded reach

Compare thread length for the assembly

Thread length determines the stated reach available for a compatible fastening point. Compare the available length with the engagement needed in your application.

Aluminum four-prong models are represented with 1-3/4-inch and 3-inch thread lengths.
Thermoplastic M8 x 1.25 models are represented with 20 mm and 40 mm thread lengths.
Confirm the needed reach before selecting a knob screw.

Select the hand-grip style

Choose aluminum four-prong or thermoplastic knobs

The available designs provide a hand-operated grip for turning and adjustment. Four-prong aluminum handles provide multiple grip points, while the represented thermoplastic option has a 40 mm knob diameter.

Four-prong aluminum handles are paired with black oxide steel screws.
Spring-pin retention helps keep the screw held in four-prong aluminum knob assemblies.
Thermoplastic knob options are paired with stainless steel screws.

FAQ

Common questions before buying

What are knob screws used for?

They provide a hand-operated way to tighten, loosen, adjust, secure, or clamp compatible threaded components.

Which thread sizes are available?

Represented inch sizes are 1/4-20, 5/16-18, 3/8-16, 1/2-13, and 5/8-11. M8 x 1.25 metric options are also represented.

What thread lengths are represented?

Four-prong aluminum models are represented in 1-3/4-inch and 3-inch lengths. Thermoplastic M8 x 1.25 models are represented in 20 mm and 40 mm lengths.

What is the difference between the available knob styles?

Four-prong aluminum knobs use black oxide steel screws and spring-pin retention. Thermoplastic knobs are paired with stainless steel screws, and one listed option has a 40 mm knob diameter.

Helpful Buying Guide

Choose Knob Screws for Compatible Hand Adjustments

Visual Guide

Popular examples in this category

Aluminum Four-Prong Hand Knob Screw, 3/8-16 Thread, 3 in. Thread LengthWBB2292142

Black Thermoplastic Hand Knob with M8 x 1.25 Stainless Steel ScrewWBB2292108

Aluminum Four-Prong Hand Knob Screw, 1/2-13 Thread, 3 in. Thread LengthWBB2292143

Aluminum Four-Prong Hand Knob Screw, 5/16-18 Thread, 1-3/4 in. Thread LengthWBB2292106

Use Cases

Hand-operated fastening and adjustment

Use knob screws where a threaded connection needs to be tightened, loosened, adjusted, secured, or clamped by hand.

How to Choose

Match the thread first

Select the exact compatible thread size and pitch, then choose the thread length needed for the fastening arrangement.

Applications

Equipment, machine hardware, and maintenance

These options are suited to hand-adjusted equipment components, machine hardware, maintenance work, and applicable clamping tasks.

Additional Info

Compare handle and screw construction

Four-prong aluminum models use black oxide steel screws with spring-pin retention. Thermoplastic models are paired with stainless steel screws.

5Inch thread sizes

From 1/4-20 through 5/8-11.

M8 x 1.25Metric thread option

Available on thermoplastic hand knobs.

1-3/4 to 3 in.Aluminum thread lengths

Represented threaded reach options.

40 mmKnob diameter

Specified for one thermoplastic option.

Comparison Guide

Compare the Available Knob Screw Types

Use thread compatibility and required reach as the primary comparison points, then select the knob and screw construction that fits the assembly.

Product type	Thread options	Thread length and construction
Four-prong aluminum hand knob screw	1/4-20, 5/16-18, 3/8-16, 1/2-13, or 5/8-11	1-3/4 in. or 3 in.; black oxide steel screw; spring-pin retention
Thermoplastic hand knob with screw	M8 x 1.25	20 mm or 40 mm; stainless steel screw
Hand-grip comparison	Four-prong aluminum or thermoplastic knob	Four-prong models provide grip points; one thermoplastic option has a 40 mm knob diameter

Planning Guide

Plan the right fit before choosing

Start with thread compatibility

Choose the matching thread size and pitch

Knob screws must match the threaded component in the assembly. The represented options include inch thread sizes and metric M8 x 1.25 options.

1/4-20, 5/16-18, 3/8-16, 1/2-13, and 5/8-11 thread sizes are represented.
Metric options use M8 x 1.25 threads.
Do not substitute one thread size or pitch for another.

Plan for threaded reach

Compare thread length for the assembly

Thread length determines the stated reach available for a compatible fastening point. Compare the available length with the engagement needed in your application.

Aluminum four-prong models are represented with 1-3/4-inch and 3-inch thread lengths.
Thermoplastic M8 x 1.25 models are represented with 20 mm and 40 mm thread lengths.
Confirm the needed reach before selecting a knob screw.

Select the hand-grip style

Choose aluminum four-prong or thermoplastic knobs

Four-prong aluminum handles are paired with black oxide steel screws.
Spring-pin retention helps keep the screw held in four-prong aluminum knob assemblies.
Thermoplastic knob options are paired with stainless steel screws.

FAQ

Common questions before buying

What are knob screws used for?

They provide a hand-operated way to tighten, loosen, adjust, secure, or clamp compatible threaded components.

Which thread sizes are available?

Represented inch sizes are 1/4-20, 5/16-18, 3/8-16, 1/2-13, and 5/8-11. M8 x 1.25 metric options are also represented.

What thread lengths are represented?

Four-prong aluminum models are represented in 1-3/4-inch and 3-inch lengths. Thermoplastic M8 x 1.25 models are represented in 20 mm and 40 mm lengths.

What is the difference between the available knob styles?

Four-prong aluminum knobs use black oxide steel screws and spring-pin retention. Thermoplastic knobs are paired with stainless steel screws, and one listed option has a 40 mm knob diameter.

Choose Knob Screws for Compatible Hand Adjustments

Popular examples in this category

Hand-operated fastening and adjustment

Match the thread first

Equipment, machine hardware, and maintenance

Compare handle and screw construction

Compare the Available Knob Screw Types

Plan the right fit before choosing

Choose the matching thread size and pitch

Compare thread length for the assembly

Choose aluminum four-prong or thermoplastic knobs

Common questions before buying

Choose Knob Screws for Compatible Hand Adjustments

Popular examples in this category

Hand-operated fastening and adjustment

Match the thread first

Equipment, machine hardware, and maintenance

Compare handle and screw construction

Compare the Available Knob Screw Types

Plan the right fit before choosing

Choose the matching thread size and pitch

Compare thread length for the assembly

Choose aluminum four-prong or thermoplastic knobs

Common questions before buying

Choosing the right file folders

Folder FAQs

Outfitting classrooms that work all day

Education FAQs

Choosing the right labels

Labels FAQs

Choosing the right tab dividers

Tab Dividers FAQs

Choosing the right office supplies

Office Supplies FAQs

Choosing the right sports & PE equipment

Sports & Athletics FAQs

Choosing the right FireKing fireproof cabinet

FireKing FAQs

Shipping & Policies