Value Collection 015393PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 015393PR is a hex socket cap screw designed for high-strength fastening applications where precise torque and a low-profile head are required. Sized at 1/2-20 UNF with 1 inch of length under the head, this fastener is fully threaded along its entire length. It is manufactured from alloy steel with a black oxide finish that provides moderate corrosion resistance and reduces light reflection. The 3/8 inch hex drive accepts a standard hex key or Allen wrench. This screw is installed by mechanical contractors, millwrights, maintenance technicians, and general tradespeople working on machinery, equipment frames, and structural assemblies.

This screw is suited for general industrial and mechanical applications where a fine-threaded fastener with controlled tensile strength is specified. The 1/2-20 UNF thread pitch is common in applications requiring higher thread engagement strength compared to coarse-thread equivalents. It fits wherever a 1/2-inch socket head cap screw meeting ASME/ANSI B18.3 and ASTM A574 standards is called out in engineering or maintenance documentation.

Key Features

• 1/2-20 UNF fine thread for increased tensile and shear strength relative to coarse-thread equivalent
• Fully threaded shank maximizes thread engagement across the full 1 inch length under head
• 3/8 inch hex drive accommodates standard hex keys and T-handle drivers
• Alloy steel construction meets ASTM A574 mechanical requirements for socket head cap screws
• Black oxide finish reduces surface corrosion and minimizes light reflection in service
• Conforms to ASME/ANSI B18.3 and IFI 124 dimensional standards

Compatibility

Designed as an OEM-style and MRO replacement hex socket cap screw for machinery, equipment, and structural assemblies specifying a 1/2-20 UNF socket head cap screw per ASME/ANSI B18.3 or ASTM A574.

Installation Notes

Install using a calibrated torque wrench and a 3/8 inch hex key bit; do not over-tighten, as alloy steel fine-thread fasteners can gall or strip in softer parent materials. De-energize and lock out any machinery before replacing fasteners in live equipment per applicable OSHA lockout/tagout procedures. Inspect mating threads for damage before installation and apply a thread lubricant or anti-seize only if specified by the equipment manufacturer.