Value Collection 581268PR Hex Socket Cap Screw 8-36 Unf

Product Description

The VALUE COLLECTION 581268PR is an alloy steel hex socket cap screw designed for high-strength fastening in tight-clearance applications. Threaded to 8-36 UNF with a 0.25-inch length under the head, this fastener accepts a 9/64-inch hex drive and is fully threaded from tip to head. The black oxide finish provides mild corrosion resistance and reduces light reflection, making it suitable for interior mechanical and structural assemblies. This screw meets ASME/ANSI B18.3 and ASTM A574 standards, which specify mechanical properties and dimensional tolerances for socket cap screws. It is commonly installed by machinists, millwrights, equipment technicians, and mechanical contractors.

This screw is suited for precision mechanical assemblies, tooling fixtures, machine components, and equipment panels where a flush or recessed fastener head is required. The fine 8-36 UNF thread pitch allows for tighter thread engagement and greater resistance to loosening under vibration compared to coarse-thread equivalents. Applications include light industrial equipment, instrumentation enclosures, and general-purpose mechanical assembly work requiring a compact, high-strength fastener.

Key Features

• 8-36 UNF fine thread for increased vibration resistance and precise torque control
• Fully threaded along the entire shank for maximum thread engagement
• 9/64-inch hex socket drive compatible with standard hex keys and Allen drivers
• Black oxide finish for mild corrosion resistance and low-reflectance appearance
• Meets ASME/ANSI B18.3 and ASTM A574 dimensional and mechanical standards
• Alloy steel construction for high tensile strength in compact fastener sizes

Compatibility

Designed as a standard 8-36 UNF socket cap screw suitable for use in any application requiring an ASME/ANSI B18.3 or ASTM A574 compliant fastener of this thread size and head style.

Installation Notes

Installation requires a 9/64-inch hex key or Allen driver; use a calibrated torque wrench when a specific clamp load is required for the assembly. Ensure the mating tapped hole is clean, free of debris, and properly dimensioned for 8-36 UNF thread engagement before installation. De-energize or lock out any equipment before fastener service in electrical or mechanical enclosures per applicable safety standards. Do not mix with coarse-thread fasteners or use in stripped or cross-threaded holes, as alloy steel screws can fail without visible warning at reduced thread engagement.