Value Collection 40264 Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 40264 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling fixtures, and industrial equipment. It features a 1/2-20 UNF thread size with a 3-inch length under head and is partially threaded. The 3/8-inch hex drive accepts a standard Allen key or hex bit driver. Constructed from alloy steel with a black oxide finish, this screw provides good tensile strength and moderate corrosion resistance in dry or lightly oiled environments. It meets ASME/ANSI B18.3 and ASTM A574 standards, which specify dimensional and mechanical property requirements for socket cap screws used in demanding applications.

This fastener is suited for use in machine tool components, jigs, dies, hydraulic manifolds, and general industrial assemblies where a recessed-drive, high-strength cap screw is required. The 1/2-20 UNF fine thread pitch is preferred in applications requiring precise torque control or where vibration resistance is important. This screw is appropriate for use by machinists, millwrights, maintenance technicians, and mechanical contractors working with steel or iron components.

Key Features

• 1/2-20 UNF fine thread for precise torque control and vibration resistance
• 3-inch length under head with partial threading for clamping grip in thicker assemblies
• 3/8-inch internal hex drive for use with standard Allen keys or hex bit drivers
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish provides a low-reflectance surface and light corrosion resistance in dry or oiled service
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw for use in any application requiring a 1/2-20 UNF partially threaded fastener with a 3/8-inch hex drive.

Installation Notes

Installation requires a 3/8-inch hex key or Allen driver of appropriate quality for the torque demands of the joint. Power down and de-energize or depressurize any equipment before replacing or installing fasteners in load-bearing or pressurized assemblies. Follow applicable machine design standards and consult torque specifications provided by the equipment manufacturer for the joint material and fastener grade in use.