Value Collection R56001704 Machine Screw 1/4-20 X 1-1/2 in Ss 316

Product Description

The VALUE COLLECTION R56001704 is a 1/4-20 x 1-1/2 inch flat head slotted machine screw manufactured from Grade 316 stainless steel. This fastener features a unified national coarse (UNC) thread form and a bright, uncoated finish. The flat head profile sits flush with the mating surface when fully driven, making it well suited for applications where a low-profile or countersunk finish is required. Grade 316 stainless steel provides strong resistance to corrosion and oxidation, including in chloride-rich and marine environments. Installed by maintenance technicians, pipefitters, electricians, and general contractors across a wide range of industries.

This machine screw is used in applications demanding corrosion resistance and a clean countersunk appearance. Typical install scenarios include panel mounting, equipment enclosures, marine fixtures, food-service equipment, and coastal or chemical-exposure environments where standard carbon steel fasteners would corrode prematurely. The slotted drive accepts a standard flat-blade screwdriver, making it accessible with basic hand tools. Overall length is 1-1/2 inches with length under head also measuring 1-1/2 inches, indicating measurement is taken from the top of the flat head.

Key Features

• Grade 316 stainless steel construction for superior corrosion resistance in harsh and marine environments
• Flat head profile for flush or countersunk installations
• Slotted drive compatible with standard flat-blade screwdrivers
• 1/4-20 UNC thread for broad compatibility with standard tapped holes and nuts
• Bright, uncoated finish — no surface treatment that could degrade in chemical or saltwater exposure
• No washer — clean, low-profile seating against the workpiece surface

Compatibility

Designed for use in standard 1/4-20 UNC tapped holes and compatible with 1/4-20 hex nuts, locknuts, and threaded inserts. Suitable for ferrous and non-ferrous substrates where a countersunk flat head screw is specified.

Installation Notes

Power down or de-energize any equipment before fastening into electrical enclosures or panels. Use a properly sized flat-blade screwdriver to avoid camming out the slotted drive. Drill and countersink the mating material to the appropriate angle — flat head machine screws typically require an 82-degree countersink, though always verify against the applicable engineering specification for the assembly. Follow applicable codes and torque guidance from the equipment manufacturer or structural engineer of record.