Value Collection -48546-2 Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION -48546-2 is a partially threaded hex socket cap screw designed for use in precision fastening applications across industrial, mechanical, and structural assembly work. Manufactured from alloy steel with a black oxide finish, this fastener meets ASME/ANSI B18.3 and ASTM A574 standards. The 3/8-16 UNC thread size and 4.25-inch length under head make it suitable for deeper-reach clamping joints. Drive size is 5/16 inches, requiring a standard hex key or Allen socket. The black oxide coating provides moderate corrosion resistance and reduces galling during installation. Machinists, millwrights, and maintenance technicians are the typical installers for this class of fastener.

This socket cap screw is suited for machine frames, fixture plates, jigs, tooling assemblies, and general mechanical fastening where a recessed-drive, high-strength fastener is required. The partial threading allows for a smooth shank section beneath the head, which is useful when clamping unthreaded members or where shear load transfer through the shank is needed. Applicable in both light industrial and heavy shop environments. Minimum order quantity is 10 pieces; package quantity is 1.

Key Features

• 3/8-16 UNC thread form for standard inch-series fastening applications
• 4.25-inch length under head provides extra reach for deep joint stacks
• Partially threaded shank supports shear load transfer and clean clamping
• Alloy steel construction meets ASTM A574 high-strength socket screw requirements
• Black oxide finish reduces surface corrosion and galling during installation
• 5/16-inch hex drive compatible with standard Allen keys and socket drivers

Compatibility

Designed as an OEM-style replacement or standard-stock hex socket cap screw for any application requiring a 3/8-16 UNC partially threaded fastener per ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation should be performed by a qualified machinist, millwright, or maintenance technician using a calibrated 5/16-inch hex key or torque wrench with an Allen socket. Clean and inspect the mating threaded hole before installation to prevent cross-threading. Apply thread lubricant or anti-seize as appropriate for the service environment. Do not exceed the torque capacity of the alloy steel fastener or substitute drive tools that may damage the socket recess.