Value Collection R56001702 Flat Head Machine Screw 1/4-20

Product Description

The VALUE COLLECTION R56001702 is a 1/4-20 x 1-1/4-inch flat head slotted machine screw manufactured from Grade 316 stainless steel. The flat head profile sits flush with or below the surface of the mated material, making it suitable for applications where a low-profile fastener is required. Grade 316 stainless steel provides strong resistance to corrosion and oxidation, including in marine, chemical, and high-moisture environments. The screw uses Unified National Coarse (UNC) thread form at 1/4-20, which is a widely used standard pitch in general mechanical assembly. Overall length is 1-1/4 inches, measured from tip to the top of the head, with the full length also serving as the length under head.

This screw is suited for use in mechanical, HVAC, plumbing, electrical, and industrial assembly applications where a corrosion-resistant fastener is required. The slotted drive allows installation with a standard flat-blade screwdriver, a common tool in field and shop environments. Grade 316 stainless is preferred in coastal, marine, food-service, and chemical-processing installations where chloride exposure is a concern. Sold individually, with a minimum order quantity of 25 units per order.

Key Features

• Grade 316 stainless steel for superior corrosion resistance, including chloride and marine environments
• 1/4-20 UNC thread — widely compatible with standard tapped holes and nuts
• Flat head profile seats flush with the mating surface
• Slotted drive for installation with a standard flat-blade screwdriver
• Bright/uncoated finish — no plating to flake or react in corrosive environments
• No washer — clean, direct bearing surface under the head

Compatibility

Designed for use in standard 1/4-20 UNC tapped holes across mechanical assemblies, enclosures, panels, and equipment requiring a flush-seating, corrosion-resistant fastener.

Installation Notes

Install using a flat-blade screwdriver sized to the slot. Torque to the specification required by the assembly drawing or equipment manufacturer. In stainless-to-stainless installations, apply an anti-seize compound to the threads to prevent galling. Confirm thread engagement depth meets the minimum required for the joint load before final tightening.