Value Collection R88448086 Button Head Screw 1/4-20 X 1/2

Product Description

The VALUE COLLECTION R88448086 is a 1/4-20 x 1/2 inch button head machine screw designed for mechanical fastening applications requiring a low-profile head and corrosion-resistant construction. Manufactured from 18-8 stainless steel with a bright, uncoated finish, this screw offers solid resistance to rust and oxidation in both indoor and outdoor service environments. The Pin-In Torx drive requires a matching security bit, making it suitable for tamper-resistant assemblies. Length is measured under the head. Thread standard is UNC, and the 1/4-20 thread size is widely used across industrial, commercial, and mechanical assembly applications. These screws are sold in minimum order quantities of 25 units per order.

This screw is appropriate for use in general mechanical assemblies, equipment enclosures, brackets, and fabricated steel components where a flush or low-profile fastener head is needed. The button head profile distributes clamping load over a wider bearing surface compared to a flat head, reducing the risk of surface damage on softer substrate materials. Stainless steel construction makes this screw a practical choice for applications exposed to moisture, mild chemicals, or outdoor conditions. Trades including millwrights, maintenance technicians, and equipment assemblers commonly specify this fastener type.

Key Features

• Button head profile provides low-profile, wide-bearing fastening surface
• Pin-In Torx drive for tamper-resistant installation
• 18-8 stainless steel construction resists corrosion and oxidation
• Bright, uncoated finish — no plating to crack, chip, or delaminate
• UNC thread standard, 1/4-20 thread size
• Length measured under head: 1/2 inch

Compatibility

Designed as a standard UNC 1/4-20 threaded fastener compatible with any tapped hole or nut conforming to the 1/4-20 Unified National Coarse thread specification.

Installation Notes

Installation requires a Pin-In Torx security bit sized for the screw head — standard Torx bits will not properly engage this drive. Power down or de-energize any equipment before fastening into or near electrical enclosures. Follow applicable torque guidelines for 1/4-20 stainless fasteners per the relevant mechanical or equipment specification. Avoid over-torquing stainless steel fasteners, as galling can occur without proper lubrication or anti-seize compound.