Value Collection 33638 Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 33638 is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. It features a 3/8-16 UNC thread size with a 2-inch length under the head and accepts a 5/16-inch hex drive. Constructed from alloy steel with a black oxide finish, it delivers solid corrosion resistance and reduced light reflection in service environments. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it a reliable choice for engineers, millwrights, and maintenance technicians who need a standardized, high-tensile socket cap screw.

This screw is suited for general industrial, manufacturing, and maintenance applications where a recessed drive fastener is required. Partial threading allows for improved clamping force in bolted joint assemblies. The black oxide alloy steel construction holds up in both indoor and light-duty outdoor environments. It is commonly used in machine component assembly, equipment mounting, fixture fabrication, and similar mechanical service work where a socket cap fastener is specified.

Key Features

• 3/8-16 UNC thread size with 2-inch length under head
• Partially threaded for improved clamping load in bolted joints
• 5/16-inch hex socket drive for standard Allen wrench or hex bit compatibility
• Alloy steel construction with black oxide finish for corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard 3/8-16 UNC hex socket cap screw suitable for use in any application calling for an ASME/ANSI B18.3 compliant socket head cap screw of this thread size and length.

Installation Notes

Installation should be performed with a properly sized 5/16-inch hex key or socket bit to avoid rounding the drive recess. Apply appropriate thread torque per the joint design specification for 3/8-16 alloy steel fasteners. Ensure mating threads are clean and free of debris before installation. Always de-energize and lock out any equipment before accessing fasteners on powered machinery.