Value Collection 721192PR Flat Socket Cap Screw 5/16-24

Product Description

The VALUE COLLECTION 721192PR is a flat socket cap screw designed for precision fastening applications requiring a flush or countersunk head profile. Featuring an 82-degree flat head with a 3/16-inch hex socket drive, this screw uses a 5/16-24 UNF thread and measures 3-1/2 inches in overall length. It is partially threaded and manufactured from alloy steel with a black oxide finish for corrosion resistance in moderate-duty environments. Compliance with ASME/ANSI B18.3 and ASTM F835 standards makes this fastener suitable for critical assemblies where dimensional and mechanical consistency is required.

This screw is used in mechanical, industrial, and OEM assembly applications where a low-profile countersunk head is needed to sit flush with or below a mating surface. The 5/16-24 UNF fine-thread specification provides improved thread engagement and holding strength in metal-to-metal applications. Partially threaded shanks are common in clamping situations where the unthreaded portion bears shear loads. Machinists, millwrights, maintenance technicians, and OEM assembly personnel are the typical installers.

Key Features

• 82-degree flat head for flush or countersunk seating
• 3/16-inch hex socket drive for use with standard Allen keys or hex bits
• 5/16-24 UNF fine-thread specification for strong metal-to-metal engagement
• Partially threaded shank accommodates shear-load clamping applications
• Alloy steel construction with black oxide finish for moderate corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM F835 fastener standards

Compatibility

Designed as an OEM-style and replacement fastener for applications requiring a 5/16-24 UNF flat socket cap screw with an 82-degree head angle and 3-1/2-inch overall length in alloy steel.

Installation Notes

Installation requires a 3/16-inch hex key or hex socket bit; use a calibrated torque wrench for assemblies with specified torque requirements. Ensure the mating countersink is machined to the correct 82-degree angle before installation to achieve full head contact. Power down any equipment completely before accessing fastener locations in live mechanical or electrical assemblies. Black oxide finish provides minimal corrosion protection and may benefit from supplemental lubrication or sealant in wet or outdoor environments.