Button Head Cap Screws

Button Head Socket Cap Screws are commonly used in machine parts, die fixturing, and clamping. The socket head enables driving where there is not sufficient space for wrenches or sockets. The button shaped head offer a wider bearing surface. Button head socket cap screws have a high tensile strength but are still low profile. They are covered by ASME B18.3

Button head socket cap screws are a type of cap screw that has a hexagonal socket and a rounded button-shaped head. An allen wrench or hex key is used to tighten the button head socket cap screw. Most button-socket cap screws feature clean heads with no stamping or marking for a nice clean finished look. Button Socket Heads can be tightened to much higher torque requirements than slotted or cross recessed drive machine screws since they are tightened with a hexagon shaped key.
Common applications of Button Head Cap Screws are:

  • • Automotive
  • • Electronics
  • • Machinery
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Button Head Cap Screws Diameters

Button Head Cap Screws are available on the FCH Network with Imperial/US diameters that range from #000 to 6 and with Metric diameters that range from M1 to M22. The length of Button Head Cap Screws is usually measured from the point to the underside of the head.

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US/Imperial diameters
Metric diameters
Button Head Cap Screws Lengths

Button Head Cap Screws are available on the FCH Network with lengths that range from 1/8 to 18.

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US/Imperial lengths
Metric lengths
Button Head Cap Screws Materials

Button Head Cap Screws are available on the FCH Network in materials that range from Steel to Plastic

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Button Head Cap Screws Finishes

Button Head Cap Screws are available on the FCH Network in finishes or coatings that range from Plain to Tin Plated

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