Value Collection 581473PS Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION 581473PS is a hex socket cap screw designed for applications requiring a strong, low-profile fastener driven with an internal hex key. Sized at 3/8-16 UNC with a 4.25-inch length under the head, this screw is partially threaded, which allows it to clamp materials securely without fully threading through the clamped section. Made from alloy steel with a black oxide finish, it meets ASME/ANSI B18.3 and ASTM A574 standards. A 5/16-inch hex drive is required for installation. Machinists, maintenance mechanics, and industrial assembly technicians are the primary installers.

This cap screw fits general industrial and mechanical assembly applications where a recessed hex drive is preferred over an external hex head. The partially threaded design suits bolted joint assemblies where thread engagement length and clamping distance are carefully specified. Typical use cases include machine frames, jigs, fixtures, and equipment housings in both light and heavy manufacturing environments. The 3/8-16 UNC thread is one of the most common coarse-thread fastener sizes in North American industrial equipment.

Key Features

• Alloy steel construction meets ASTM A574 mechanical property requirements for socket cap screws
• Black oxide coating provides mild corrosion resistance and reduces light reflection on finished assemblies
• Partially threaded shank for precise clamping in bolted joint applications
• 3/8-16 UNC coarse thread for broad compatibility with standard tapped holes
• 5/16-inch hex drive accepts standard hex keys and socket bits
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as an OEM-style and aftermarket replacement fastener for any tapped 3/8-16 UNC threaded hole requiring an ASME/ANSI B18.3 socket cap screw with a 4.25-inch length under the head.

Installation Notes

Installation requires a 5/16-inch hex key or socket drive. Always verify the tapped hole depth and thread condition before driving the fastener. Torque to the value specified by the equipment manufacturer or applicable fastener standard for the joint material and assembly. Avoid cross-threading by starting the screw by hand before applying torque.