Value Collection 701197PR Button Socket Cap Screw 1/2-13

Product Description

The VALUE COLLECTION 701197PR is a button socket cap screw designed for applications requiring a low-profile head with high-strength fastening. Manufactured from alloy steel with a black oxide coating, this screw measures 1/2-13 thread size by 1-3/4 inches in length under the head and features a 5/16-inch hex socket drive. Hardness is rated at 36-43 HRC, meeting ANSI/ASME B18.3 and ASTM F835 standards. The fully threaded shank and UNC thread form provide reliable clamping force in both structural and mechanical assemblies. Installers in fabrication, industrial maintenance, and equipment assembly work specify this type of fastener where a standard hex cap screw head would protrude unacceptably.

This button socket cap screw is suited for mechanical assemblies, machinery frames, enclosures, and fixtures where a smooth, domed head profile reduces snagging risk and improves surface clearance. The black oxide finish provides mild corrosion resistance and reduces light reflection, making it a common choice in both industrial and precision equipment environments. The UNC thread form is compatible with standard tapped holes following Class 3A fit tolerances, ensuring a controlled and consistent thread engagement.

Key Features

• Low-profile button head reduces protrusion compared to standard hex cap screws
• 5/16-inch hex socket drive for use with standard hex keys and socket drivers
• Alloy steel construction rated 36-43 HRC for high-strength applications
• Black oxide coating provides mild corrosion protection and a non-reflective finish
• Fully threaded shank with 1/2-13 UNC Class 3A thread fit
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a direct-fit replacement or standard-use fastener for any 1/2-13 UNC tapped hole requiring a button head socket cap screw per ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Installation is performed with a 5/16-inch hex key or socket driver. Ensure the mating tapped hole is clean and free of debris before threading to maintain Class 3A fit integrity. Apply appropriate thread lubricant or thread-locking compound as required by the assembly specification. Never exceed the rated hardness limits by substituting with lower-grade fasteners in high-load applications.