Button Head Cap Screws

Button head cap screws are threaded fasteners with rounded button-style heads used to secure components in assembly, maintenance, and repair work. The represented options are suited to light-duty guards, covers, ornamental fixtures, and other assemblies with compatible pre-tapped holes or mating nuts, while providing a clean, finished appearance on visible connections.

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Helpful Buying Guide

Button Head Cap Screw Buying Guide

Choose button head cap screws by matching the thread, pitch, and length to the connection specified for your assembly. The available selection includes metric M5, M6, and M8 options as well as 1/4-20 coarse-thread options, with steel, black oxide steel, plain, and 304 stainless steel constructions represented.

Visual Guide

Popular examples in this category

M6 x 1.00 x 12 mm Class 12.9 Black Oxide Button Socket Cap Screws, 100-PackM6 x 1.00 x 12 mm Class 12.9 Black Oxide Button Socket Cap Screws, 100-PackWBB2100602M8 x 1.25 x 16 mm 304 Stainless Steel Button Head Socket Cap Screws, 100-PackM8 x 1.25 x 16 mm 304 Stainless Steel Button Head Socket Cap Screws, 100-PackWBB22984661/4-20 x 1-1/4 in. Coarse Thread Button Head Socket Cap Screws, Plain, 100-Pack1/4-20 x 1-1/4 in. Coarse Thread Button Head Socket Cap Screws, Plain, 100-PackWBB418500M6 x 1.0 x 16 mm Black Oxide Steel Button Socket Cap Screws, 100-PackM6 x 1.0 x 16 mm Black Oxide Steel Button Socket Cap Screws, 100-PackWBB2291531
Use Cases

Fasten visible assembly components

These screws are represented for maintenance, assembly, and repair tasks, including securing light-duty guards, covers, and ornamental fixtures.

How to Choose

Match the thread and length

Confirm the required thread designation and pitch, then select the stated screw length for the assembly. Available examples include M5 x 0.8, M6 x 1.0, M8 x 1.25, and 1/4-20 coarse thread.

Applications

Use with compatible threaded connections

Select a screw that matches the pre-tapped hole or mating nut in the component being fastened. Socket-drive versions install with an Allen or hex key.

Additional Information

Compare head style, material, and pack quantity

Button heads provide a rounded, finished-looking profile. The represented products include steel, black oxide steel, 304 stainless steel, plain finishes, and 100-count packs.

M5–M8Metric sizes represented

Metric thread options include M5 x 0.8, M6 x 1.0, and M8 x 1.25.

1/4-20Inch thread represented

Coarse-thread and UNC 1/4-20 options are included.

10–25 mmMetric lengths represented

Metric lengths include 10 mm, 12 mm, 16 mm, and 25 mm.

100Screws per represented pack

The representative products are supplied in 100-count packs.

Comparison Guide

Compare Represented Button Head Cap Screw Options

Use the thread system, available lengths, and material or finish details below to narrow the selection for a compatible assembly.

Option groupThreads and lengths representedMaterial, finish, and drive details
Metric M5M5 x 0.8 in 10 mm, 12 mm, and 25 mm lengths304 stainless steel and black oxide steel options are represented; socket or hex-key drive is listed on select options.
Metric M6 and M8M6 x 1.0 in 12 mm, 16 mm, and 25 mm lengths; M8 x 1.25 in 16 mm lengthSteel, black oxide steel, Class 12.9 black oxide steel, and 304 stainless steel options are represented.
Inch 1/4-201/4-20 in 1/4 in., 3/4 in., and 1-1/4 in. lengthsPlain and black oxide steel options are represented; socket-drive options install with an Allen or hex key.
Planning Guide

Plan the right fit before choosing

Start with thread compatibility

Match the screw to the specified threaded connection

Thread compatibility is the first selection step. Metric choices represented in this category include M5 x 0.8, M6 x 1.0, and M8 x 1.25. Inch-size options use 1/4-20 coarse thread, including UNC-designated hardware.

  • Use M5 x 0.8 where that metric thread and pitch are required.
  • Use M6 x 1.0 for matching M6 threaded connections.
  • Use M8 x 1.25 for compatible M8 threaded holes or components.
  • Use 1/4-20 screws with compatible pre-tapped holes or mating nuts.
Choose the required length

Select a length that matches the assembly specification

The represented range includes short and longer lengths for different component arrangements. Metric examples include 10 mm, 12 mm, 16 mm, and 25 mm lengths. Inch examples include 1/4 in., 3/4 in., and 1-1/4 in. lengths.

  • M5 options are represented in 10 mm, 12 mm, and 25 mm lengths.
  • M6 options are represented in 12 mm, 16 mm, and 25 mm lengths.
  • An M8 option is represented in a 16 mm length.
  • 1/4-20 options are represented in 1/4 in., 3/4 in., and 1-1/4 in. lengths.
Finish the assembly neatly

Consider material and button-head appearance

Button head designs offer a rounded top and a clean-looking, finished appearance on completed assemblies. Depending on the selected size, represented material and finish choices include steel, black oxide steel, 304 stainless steel, and plain hardware.

  • Button heads are suited to guards, covers, and ornamental fixtures.
  • Socket-drive options allow installation with an Allen or hex key.
  • Black oxide options provide a specified black appearance.
  • 100-count packs provide multiple matching screws for assembly, maintenance, replacement, or stocking needs.
FAQ

Common questions before buying

What thread sizes are represented?

The represented products include M5 x 0.8, M6 x 1.0, M8 x 1.25, and 1/4-20 coarse-thread options.

What lengths are available in the represented products?

Metric lengths include 10 mm, 12 mm, 16 mm, and 25 mm. Inch lengths include 1/4 in., 3/4 in., and 1-1/4 in.

How are socket-drive button head screws installed?

The listed socket-drive and hex-key-drive options install with an Allen or hex key.

Why choose a button head profile?

The rounded button head provides a clean, finished-looking appearance on guards, covers, fixtures, and other visible assemblies.

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