Flat Head Cap Screws

Flat head cap screws are threaded fasteners designed to support flush-mounted connections between assembled parts. They are used in commercial maintenance, assembly, fabrication, and equipment-installation work where one component slides over, fits closely against, or mounts onto another.

Product Display:
Helpful Buying Guide

Choose Flat Head Cap Screws for Flush-Mounted Assemblies

Compare the thread size and pitch first, then select a length, material, finish, and any stated class designation that match the requirements of the assembled parts. The products represented here use flat heads and socket drives for installations where a low-profile fastening point is needed.

Visual Guide

Popular examples in this category

M3 x 0.5 x 12 mm Flat Socket Cap Screw, Steel, Black OxideM3 x 0.5 x 12 mm Flat Socket Cap Screw, Steel, Black OxideWBB2291516M8 x 1.25 x 35 mm 304 Stainless Steel Flat Head Socket Cap ScrewM8 x 1.25 x 35 mm 304 Stainless Steel Flat Head Socket Cap ScrewWBB2298559M10 x 1.5 x 80 mm 304 Stainless Steel Flat Head Socket Cap ScrewM10 x 1.5 x 80 mm 304 Stainless Steel Flat Head Socket Cap ScrewWBB2298324M8 x 1.25 x 12 mm Flat Socket Cap Screw, Steel, Black Oxide, DIN 125B, Class 10.9M8 x 1.25 x 12 mm Flat Socket Cap Screw, Steel, Black Oxide, DIN 125B, Class 10.9WBB2291270
Use Cases

Where flat heads fit

Use flat head cap screws for assembled sections that need a flush mounting surface, including connections where one part slides over or mounts against another.

How to Choose

Match the connection

Confirm the metric thread diameter and pitch against the compatible threaded hole, nut, or hardware. Then choose the listed screw length needed for the assembly.

Applications

Commercial assembly work

Representative applications include commercial maintenance, fabrication, equipment installation, component assembly, and mounting work.

Additional Info

Materials and drive style

Available examples include steel screws with a black oxide finish and 304 stainless steel screws. Socket-drive styles install with a compatible Allen or hex key.

M3–M12Thread diameters represented

Metric sizes represented range from M3 through M12.

0.5–1.75Thread pitches represented

Listed pitches range from 0.5 mm to 1.75 mm.

8–80 mmLengths represented

Representative screw lengths span 8 mm through 80 mm.

2Material options represented

Steel black oxide and 304 stainless steel constructions are represented.

Comparison Guide

Compare the represented flat head cap screw options

Use thread compatibility and required length as the primary comparison points, then review the stated material, finish, and designation details.

Selection factorSteel, black oxide examples304 stainless steel examples
Thread sizes representedM3 x 0.5, M4 x 0.7, M6 x 1.0, M8 x 1.25, and M12 x 1.75M6 x 1.0, M8 x 1.25, and M10 x 1.5
Lengths represented12 mm, 20 mm, 25 mm, 30 mm, and 40 mm8 mm, 12 mm, 35 mm, 50 mm, and 80 mm
Listed detailsBlack oxide finish; selected M8 and M12 examples have a Class 10.9 designation304 stainless steel construction
Drive and headFlat socket head for flush mountingFlat head with socket drive for installation with an Allen or hex key
Planning Guide

Plan the right fit before choosing

Start with thread compatibility

Match the metric size and pitch

The screw thread must match the compatible threaded connection. Representative options include M3 x 0.5, M4 x 0.7, M6 x 1.0, M8 x 1.25, M10 x 1.5, and M12 x 1.75.

  • Check the required metric diameter.
  • Confirm the thread pitch before selecting.
  • Match the screw to compatible threaded holes, nuts, or hardware.
Plan for assembled-part clearance

Select a length for the connection

Listed lengths range from 8 mm through 80 mm across the representative products. Select the specified length that fits the planned assembly and supports the needed flush-mounted connection.

  • Shorter listed examples include 8 mm and 12 mm.
  • Mid-range examples include 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, and 50 mm.
  • An 80 mm example is available for assemblies requiring that listed reach.
Compare material, finish, and designation

Choose the stated construction details

Steel black oxide and 304 stainless steel options are represented. Certain steel black oxide examples carry a Class 10.9 designation, while one listed M8 option also identifies DIN 125B.

  • Steel black oxide options provide the specified black appearance.
  • 304 stainless steel options provide stainless steel construction.
  • Review stated class designations when a Class 10.9 screw is required.
FAQ

Common questions before buying

What is the purpose of a flat head cap screw?

Its flat head supports a flush-mounted fastening point where adjoining parts need a smooth or low-profile surface.

Which thread sizes are represented?

Representative products include M3, M4, M6, M8, M10, and M12 sizes with the listed matching pitches.

What materials are available in the represented products?

The summaries represent steel fasteners with a black oxide finish and fasteners made from 304 stainless steel.

What tool is used for the socket-drive options?

The listed socket-drive screws install with a compatible Allen or hex key.

Helpful Buying Guide

Choose Flat Head Cap Screws for Flush-Mounted Assemblies

Compare the thread size and pitch first, then select a length, material, finish, and any stated class designation that match the requirements of the assembled parts. The products represented here use flat heads and socket drives for installations where a low-profile fastening point is needed.

Visual Guide

Popular examples in this category

M3 x 0.5 x 12 mm Flat Socket Cap Screw, Steel, Black OxideM3 x 0.5 x 12 mm Flat Socket Cap Screw, Steel, Black OxideWBB2291516M8 x 1.25 x 35 mm 304 Stainless Steel Flat Head Socket Cap ScrewM8 x 1.25 x 35 mm 304 Stainless Steel Flat Head Socket Cap ScrewWBB2298559M10 x 1.5 x 80 mm 304 Stainless Steel Flat Head Socket Cap ScrewM10 x 1.5 x 80 mm 304 Stainless Steel Flat Head Socket Cap ScrewWBB2298324M8 x 1.25 x 12 mm Flat Socket Cap Screw, Steel, Black Oxide, DIN 125B, Class 10.9M8 x 1.25 x 12 mm Flat Socket Cap Screw, Steel, Black Oxide, DIN 125B, Class 10.9WBB2291270
Use Cases

Where flat heads fit

Use flat head cap screws for assembled sections that need a flush mounting surface, including connections where one part slides over or mounts against another.

How to Choose

Match the connection

Confirm the metric thread diameter and pitch against the compatible threaded hole, nut, or hardware. Then choose the listed screw length needed for the assembly.

Applications

Commercial assembly work

Representative applications include commercial maintenance, fabrication, equipment installation, component assembly, and mounting work.

Additional Info

Materials and drive style

Available examples include steel screws with a black oxide finish and 304 stainless steel screws. Socket-drive styles install with a compatible Allen or hex key.

M3–M12Thread diameters represented

Metric sizes represented range from M3 through M12.

0.5–1.75Thread pitches represented

Listed pitches range from 0.5 mm to 1.75 mm.

8–80 mmLengths represented

Representative screw lengths span 8 mm through 80 mm.

2Material options represented

Steel black oxide and 304 stainless steel constructions are represented.

Comparison Guide

Compare the represented flat head cap screw options

Use thread compatibility and required length as the primary comparison points, then review the stated material, finish, and designation details.

Selection factorSteel, black oxide examples304 stainless steel examples
Thread sizes representedM3 x 0.5, M4 x 0.7, M6 x 1.0, M8 x 1.25, and M12 x 1.75M6 x 1.0, M8 x 1.25, and M10 x 1.5
Lengths represented12 mm, 20 mm, 25 mm, 30 mm, and 40 mm8 mm, 12 mm, 35 mm, 50 mm, and 80 mm
Listed detailsBlack oxide finish; selected M8 and M12 examples have a Class 10.9 designation304 stainless steel construction
Drive and headFlat socket head for flush mountingFlat head with socket drive for installation with an Allen or hex key
Planning Guide

Plan the right fit before choosing

Start with thread compatibility

Match the metric size and pitch

The screw thread must match the compatible threaded connection. Representative options include M3 x 0.5, M4 x 0.7, M6 x 1.0, M8 x 1.25, M10 x 1.5, and M12 x 1.75.

  • Check the required metric diameter.
  • Confirm the thread pitch before selecting.
  • Match the screw to compatible threaded holes, nuts, or hardware.
Plan for assembled-part clearance

Select a length for the connection

Listed lengths range from 8 mm through 80 mm across the representative products. Select the specified length that fits the planned assembly and supports the needed flush-mounted connection.

  • Shorter listed examples include 8 mm and 12 mm.
  • Mid-range examples include 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, and 50 mm.
  • An 80 mm example is available for assemblies requiring that listed reach.
Compare material, finish, and designation

Choose the stated construction details

Steel black oxide and 304 stainless steel options are represented. Certain steel black oxide examples carry a Class 10.9 designation, while one listed M8 option also identifies DIN 125B.

  • Steel black oxide options provide the specified black appearance.
  • 304 stainless steel options provide stainless steel construction.
  • Review stated class designations when a Class 10.9 screw is required.
FAQ

Common questions before buying

What is the purpose of a flat head cap screw?

Its flat head supports a flush-mounted fastening point where adjoining parts need a smooth or low-profile surface.

Which thread sizes are represented?

Representative products include M3, M4, M6, M8, M10, and M12 sizes with the listed matching pitches.

What materials are available in the represented products?

The summaries represent steel fasteners with a black oxide finish and fasteners made from 304 stainless steel.

What tool is used for the socket-drive options?

The listed socket-drive screws install with a compatible Allen or hex key.

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