This 1/4-20 x 3/8 Alloy Steel Button Head Socket Cap Screw with Nylon Insert is intended for cataloged inch-size applications where a button head and nylon insert are both specified. Its nylon insert creates frictional thread contact during installation, so the screw can be considered where service conditions call for added loosening resistance.

The rounded head helps reduce exposed edges in visible or frequently handled assemblies while the internal hex socket supports controlled installation. In electronics enclosures, control panels, and access covers, the internal hex socket drive allows tool access from above while the nylon insert adds frictional resistance at the threads. For replacement applications, matching the exact diameter and length helps align the part with drawings, service records, and existing hardware.

Cold Headers has supplied specialty socket fasteners since 1962 and supports exact-size sourcing for difficult-to-find socket products. For adjacent selections, buyers often compare standard button head socket screws, flat head socket cap screws, and nearby lengths when checking head style, material, locking feature, thread size, or nearby lengths.

Technical Highlights

• Material: Alloy Steel
• Thread Size: 1/4-20
• Length: 3/8 in.
• Head Style: Button Head
• Drive Type: Internal Hex Socket
• Locking Feature: Nylon insert providing prevailing torque

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