Value Collection 581740BR Hex Socket Cap Screw 3/4-16 Unf

Product Description

The VALUE COLLECTION 581740BR is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and structural components. It features a 3/4-16 UNF thread size and measures 4.5 inches in length under the head. The alloy steel construction with a black oxide finish provides corrosion resistance and reduced light reflection. Drive engagement is via a 5/8-inch hex socket. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding industrial and maintenance applications.

This cap screw is suited for use in manufacturing, MRO, and field-service environments where a fine-thread, high-strength fastener is required. The 3/4-16 UNF thread pitch provides finer thread engagement than its coarse-thread equivalent, which is advantageous in applications requiring precise torque control or resistance to vibration loosening. Typical installations include machine bases, hydraulic components, heavy equipment, and fabricated steel structures. Installation is performed by licensed mechanics, millwrights, or qualified maintenance technicians.

Key Features

• 3/4-16 UNF fine thread for precise torque control and vibration resistance
• 4.5-inch length under head accommodates thicker material stacks
• Partially threaded shank reduces stress concentration in load-bearing applications
• Alloy steel construction meets ASTM A574 for high-strength fastener requirements
• Black oxide finish provides mild corrosion resistance and low-glare appearance
• 5/8-inch hex socket drive for use with standard hex key or socket tooling

Compatibility

Designed as an OEM-style replacement or maintenance fastener for machinery, structural assemblies, and hydraulic components requiring a 3/4-16 UNF partially threaded hex socket cap screw conforming to ASME/ANSI B18.3.

Installation Notes

Installation should be performed by a qualified mechanic or millwright using a calibrated torque wrench and the appropriate 5/8-inch hex key or socket driver. De-energize and lock out all equipment before replacing fasteners in powered assemblies per applicable OSHA lockout/tagout procedures. Do not substitute thread-locking compounds without verifying compatibility with the black oxide finish. Verify mating thread condition and replace any damaged threaded inserts or tapped holes before torquing to specification.