Value Collection 581154PR Hex Socket Cap Screw 4-48 Unf

Product Description

The VALUE COLLECTION 581154PR is a hex socket cap screw designed for precision fastening applications that require a compact drive profile and strong clamping force. It features a 4-48 UNF thread size with a 3/4-inch length under the head and is fully threaded along its entire shank. The 3/32-inch hex drive allows use with standard allen keys or hex bits in confined spaces. Constructed from alloy steel with a black oxide coating, this fastener resists corrosion and reduces surface galling. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for structural and mechanical assembly work where dimensional and strength tolerances matter.

This screw is suited for light mechanical assemblies, instrument panels, electronics enclosures, and precision equipment where fine-thread engagement and a low-profile socket head are required. The 4-48 UNF thread pitch provides tighter thread engagement than coarse-thread equivalents, making it a common choice in applications involving thin material sections or where vibration resistance is needed. Machinists, millwrights, and assembly technicians working in industrial, commercial, and instrumentation environments are the typical end users for this fastener.

Key Features

• 4-48 UNF fine thread for high thread engagement in thin sections
• Fully threaded shank for maximum clamping along the full length
• 3/32-inch hex socket drive fits standard allen wrenches and hex bits
• Alloy steel construction meets ASTM A574 strength requirements
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• 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 4-48 UNF threaded fastener with a 3/4-inch length under the head.

Installation Notes

Install using a 3/32-inch hex key or driven bit, ensuring the receiving thread is clean and properly tapped to 4-48 UNF specification. Do not exceed the torque capacity of the alloy steel fastener by using power tools without a torque-limiting clutch. Always confirm thread engagement depth is adequate before applying load. Follow applicable machine or structural assembly codes for fastener seating and inspection.