Value Collection 701209PR Button Socket Cap Screw 1/2-20

Product Description

The VALUE COLLECTION 701209PR is a fully threaded button socket cap screw designed for mechanical assemblies where a low-profile head and high clamping strength are required. Sized at 1/2-20 UNF x 1 inch, this fastener is machined from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and a clean, matte appearance. It features a 5/16-inch hex socket drive and meets ANSI/ASME B18.3 and ASTM F835 standards. Hardness is rated at 36-43 HRC, making it suitable for high-load mechanical applications. Installation requires a standard hex key or Allen driver. This screw is commonly installed by machinists, millwrights, and mechanical contractors.

This button socket cap screw is used in general industrial and mechanical assembly applications where a domed, low-profile head is preferred over a standard cap head. The fully threaded 1/2-20 UNF configuration makes it suitable for thin material assemblies and close-tolerance fits. The black oxide finish is commonly specified in applications where light corrosion protection and reduced light reflection are desired. Typical installation environments include manufacturing equipment, fixtures, machinery guards, and structural frames.

Key Features

• Button head profile provides a low-profile, flush-style appearance in assembled hardware
• Fully threaded 1/2-20 UNF, 1 inch length under head
• Alloy steel construction with 36-43 HRC hardness rating
• Black oxide finish for mild corrosion resistance and low-glare surface
• 5/16-inch hex socket drive for standard Allen key installation
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards
• Thread fit class 3A, right-hand thread direction

Compatibility

Designed as a standard 1/2-20 UNF button socket cap screw suitable for use in threaded holes or with compatible nuts meeting ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Installation should be performed by a qualified mechanic or millwright using a calibrated 5/16-inch hex key or Allen driver. Ensure mating threads are clean and free of debris before assembly. Do not exceed the torque capacity appropriate for the thread size and material being fastened, and consult applicable standards for proper torque specifications. Always inspect threads for damage before installation.