5/16-18 x 3/8 18-8 Stainless Steel Button Head Socket Cap Screw gives maintenance and purchasing teams a defined 18-8 stainless button-head fastener for equipment repair or machine builds. Compared with taller cylindrical head styles, the button head offers a smoother exposed shape and lower head projection. The internal hex drive supports socket-key installation where external wrenching space is limited.

Typical applications include processing equipment and maintenance repair, where the exact thread and length help match drawings, service records, and replacement needs. It can also serve processing equipment and maintenance repair, where the exact thread and length help match drawings, service records, and replacement needs. The rounded head profile is useful on visible or frequently handled assemblies.

The material is useful for indoor and outdoor general-service applications where routine moisture exposure is part of the design environment. For the 5/16-18 thread and 3/8 in. length, the reference head diameter is 0.527-0.547 in. and the head height is 0.152-0.166 in.

Technical Highlights

• Material: 18-8 Stainless Steel
• Thread Size: 5/16-18
• Length: 3/8 in.
• Nominal Body Diameter: 5/16 (.312 in.)
• Head Diameter: 0.527-0.547 in.
• Head Height: 0.152-0.166 in.
• Hex-Key Size: 3/16 in.
• Drive Type: Internal Hex

Reference dimensions may vary slightly by manufacturer.

Call 773-775-7900 or email Sales@coldheaders.com for pricing, availability, or a quote.