Hex Nuts

Hex nuts are threaded fastening components used with compatible bolts, screws, studs, threaded rod, and other machine-threaded fasteners to secure metal and wood components. Commercial maintenance, repair, assembly, installation, and shop teams use them to create threaded connections, stock commonly needed hardware, and support fixture fastening work in concrete and masonry when sleeve anchors with hex nuts are required.

Product Display:
Helpful Buying Guide

Hex Nut Buying Guide

Start with the thread size needed for the mating fastener, then compare nut style, material, grade, finish, and pack quantity. This category includes standard finished hex nuts as well as flange, serrated flange, coupling, and sleeve-anchor options for specific fastening tasks.

Visual Guide

Popular examples in this category

5/16-18 UNC Grade 5 Finished Hex Nut, Pack of 1005/16-18 UNC Grade 5 Finished Hex Nut, Pack of 100WBB21008991/2-13 UNC Grade 5 Finished Hex Nut, Zinc CR+3, 100-Pack1/2-13 UNC Grade 5 Finished Hex Nut, Zinc CR+3, 100-PackWBB21010433/8-16 UNC Grade 8 Finished Hex Nut, Zinc Yellow, 100-Pack3/8-16 UNC Grade 8 Finished Hex Nut, Zinc Yellow, 100-PackWBB2101017Stainless Steel 5/16-18 Hex Flange NutStainless Steel 5/16-18 Hex Flange NutWBB2264426
Use Cases

Secure compatible threaded connections

Use standard hex nuts with compatible bolts, screws, studs, threaded rod, and machine-threaded fasteners for assembly, maintenance, repair, and installation work.

How to Choose

Match the thread before selecting

Choose the exact thread required, such as #6-32, 1/4-20, 5/16-18, 3/8-16, 1/2-13, or 5/8-11. Then confirm the specified grade, material, finish, and package count.

Applications

Select the nut form for the job

Finished hex nuts support general threaded fastening. Flange nuts provide a broader bearing surface, serrated flange nuts add a serrated bearing surface, and coupling nuts connect compatible threaded components.

Additional Info

Consider material and installation needs

Available choices include carbon steel, stainless steel, zinc-plated, zinc CR+3, zinc yellow CR+6, and black oxide finishes. Sleeve anchors with hex nuts are intended for securing fixtures to concrete, block, brick, or stone.

#6-32 to 5/8-11Thread sizes represented

Options include machine-thread and UNC sizes for compatible fastening components.

25, 50, or 100Pack quantities represented

Choose a quantity suited to installation, repair, assembly, or shop inventory needs.

5 nut stylesStyles represented

Finished hex, flange, serrated flange, coupling, and sleeve-anchor options are available.

2 installation categoriesConnection approaches

Select threaded nuts for compatible fasteners or sleeve anchors for concrete and masonry fixtures.

Comparison Guide

Compare Hex Nut Types

Use this overview to identify the product type that matches the connection and bearing-surface needs described in the product summaries.

Product typeWhat it is used withNotable listed feature
Finished hex nutCompatible bolts, screws, studs, threaded rod, and machine-threaded fastenersStandard hex form; available in multiple thread sizes, grades, materials, finishes, and pack counts
Flange or serrated flange nutCompatible threaded fastenersIntegrated flange provides a broader bearing surface; serrated versions include a serrated bearing surface
Coupling nut or sleeve anchor with hex nutCompatible threaded components, or fixtures installed in concrete and masonryCoupling nuts connect threaded components; sleeve anchors use an expanding sleeve and through-fixture installation
Planning Guide

Plan the right fit before choosing

1. Confirm thread compatibility

Match the nut to the threaded fastener

Thread compatibility is the first selection point. The products represented include UNC and machine-thread sizes ranging from #6-32 through 5/8-11.

  • Match #6-32 nuts to compatible #6-32 machine-threaded fasteners.
  • Select 1/4-20, 5/16-18, 3/8-16, 1/2-13, or 5/8-11 only for compatible threaded components.
  • For sleeve anchors, confirm the required 5/16 in. x 1-1/2 in. anchor size and the installation surface.
2. Compare nut styles

Choose a design that fits the fastening task

Standard finished hex nuts have a conventional hex form for tightening and removal. Specialized designs address different connection needs without changing the need for compatible threads.

  • Flange nuts have an integrated flange that provides a broader or wider bearing surface at the fastening point.
  • Serrated flange nuts have an integrated flange with a serrated bearing surface.
  • Coupling nuts are designed to connect compatible threaded components.
  • Sleeve anchors with hex nuts use an expanding sleeve and allow through-fixture installation in concrete, block, brick, or stone.
3. Review material, grade, finish, and quantity

Align the hardware with the stated requirement

Compare the material and grade called for in the fastening work, then select the listed finish and quantity that suit stocking, assembly, replacement, or installation needs.

  • Grade 2, Grade 5, Grade 8, Grade A steel, and 18-8 stainless steel options are represented.
  • Stainless steel options include 18-8/304 and 18-8 (A2); certain 18-8/304 products provide corrosion and chemical resistance for demanding environments.
  • Listed finishes include zinc plating, zinc CR+3, zinc yellow CR+6, and black oxide.
  • Pack quantities represented include 25, 50, and 100 pieces.
FAQ

Common questions before buying

How do I choose the correct hex nut thread size?

Match the nut exactly to the compatible threaded fastener. Sizes represented include #6-32, 1/4-20, 5/16-18, 3/8-16, 1/2-13, and 5/8-11.

What is the difference between a finished hex nut and a flange nut?

A finished hex nut has a standard hex profile. A flange nut has an integrated flange that provides a broader bearing surface at the fastening point.

When should I consider stainless steel hex nuts?

Choose a listed stainless steel option when the fastening requirement calls for 18-8/304 or 18-8 (A2) stainless steel. Certain 18-8/304 options provide corrosion and chemical resistance for demanding environments.

What are sleeve anchors with hex nuts used for?

They are used to secure fixtures to concrete, block, brick, or stone. Their expanding sleeve distributes compression load over a longer length for use in soft concrete, and they allow through-fixture installation.

!