Value Collection R56001756 Machine Screw 1/2-13 Flat Head

Product Description

The VALUE COLLECTION R56001756 is a 1/2-13 x 1-1/2 inch flat head slotted machine screw manufactured from Grade 316 stainless steel. It features a UNC (Unified National Coarse) thread form and an overall length of 1-1/2 inches with a bright, uncoated finish. Grade 316 stainless steel provides strong resistance to corrosion and chloride exposure, making this fastener well suited for wet, marine, chemical, or outdoor environments. The flat head profile sits flush with the mating surface when fully driven. This screw is installed by machinists, maintenance mechanics, and general tradespeople in applications where corrosion resistance and a flush finish are required.

This machine screw is used in light to medium-duty mechanical assemblies, equipment enclosures, brackets, and fixtures where a countersunk flat head is specified. The slotted drive accepts a standard flat-blade screwdriver. Grade 316 stainless steel is a common specification in food service, marine, and chemical processing environments where standard 18-8 stainless may not provide adequate corrosion resistance. The UNC thread form is the most widely used inch-standard thread in North American mechanical assemblies.

Key Features

• Grade 316 stainless steel construction for superior corrosion and chloride resistance
• 1/2-13 UNC thread for compatibility with standard inch-series tapped holes and nuts
• Flat head profile sits flush with the work surface when properly countersunk
• Slotted drive accepts standard flat-blade screwdrivers
• Bright, uncoated finish — no plating to chip, flake, or introduce contamination
• Overall length of 1-1/2 inches with full-length thread under the head

Compatibility

Designed for use in standard 1/2-13 UNC tapped holes or with matching 1/2-13 hex nuts and flat washers. Suitable for countersunk flat head applications requiring a flush fastener seating surface.

Installation Notes

Installation is performed by hand or with a flat-blade screwdriver sized to the slot. The mating hole should be properly countersunk to the appropriate flat head angle before driving the screw flush. Do not overtighten stainless steel fasteners, as galling can occur — apply anti-seize compound when torque requirements are critical. Ensure threads are clean and free of debris before assembly.