Value Collection R57001209 Hex Head Cap Screw 1/4-28

Product Description

The VALUE COLLECTION R57001209 is a 1/4-28 UNF hex head cap screw measuring 3-1/2 inches under the head, manufactured from 18-8 stainless steel with no coating applied. The partial threading design concentrates clamping force at the bearing surface, making it suitable for fastening applications where thread engagement is limited to the lower portion of the shank. At 0.2 pounds per unit, this fastener is intended for mechanical assemblies, equipment maintenance, and structural connections where corrosion resistance is required. Licensed tradespeople including HVAC technicians, plumbers, and electricians use this grade of fastener when working in wet, outdoor, or chemically exposed environments.

This screw is used across residential and commercial trade applications wherever a fine-thread stainless fastener is specified. Common scenarios include securing panel covers, mounting brackets, equipment enclosures, and plumbing or HVAC components in corrosive or high-humidity environments. The 1/4-28 UNF thread pitch provides finer thread engagement and greater resistance to vibration loosening compared to coarse-thread equivalents of the same diameter. Minimum order quantity is 100 units, making this item appropriate for shop stock, fleet van inventory, or ongoing service contracts with repetitive fastener needs.

Key Features

• 1/4-28 UNF fine thread for tight vibration-resistant engagement
• 3-1/2 inch length under head, partially threaded shank
• 18-8 stainless steel construction for corrosion resistance in wet or outdoor environments
• Uncoated finish — no plating or treatment that could affect dimensional tolerances
• Inch measurement system, standard hex drive head

Compatibility

Designed as a standard 1/4-28 UNF partially threaded hex head cap screw for use in inch-system mechanical assemblies requiring 18-8 stainless steel fasteners.

Installation Notes

Installation should be performed with an appropriate hex wrench or socket sized to the 1/4-inch hex head. De-energize or shut off any equipment before accessing fastener locations on live panels or mechanical systems. Apply thread-locking compound only if specified by the equipment manufacturer, as stainless fasteners can gall under high torque without lubrication. Follow applicable mechanical and building codes for fastener specifications in structural or pressure-rated assemblies.