Value Collection 701091PR Button Socket Cap Screw 8-36

Product Description

The VALUE COLLECTION 701091PR is a button socket cap screw designed for applications that require a low-profile fastener head with reliable clamping force. Built from alloy steel with a black oxide coating, this fully threaded screw measures 5/8 inch in length under the head and uses a 3/32 inch hex socket drive. It conforms to ANSI/ASME B18.3 and ASTM F835 standards, carrying a Thread Fit Class 3A designation and a hardness rating of 36-43 HRC. The right-hand UNF thread pattern is sized at 8-36. Mechanical contractors, machinists, and assembly technicians working in production or maintenance environments are the typical installers of this fastener.

This button head screw is suited for machine assembly, panel mounting, and general mechanical fastening where a rounded low-profile head is needed to clear adjacent components or reduce snag points. The black oxide finish provides mild corrosion resistance and a clean appearance in finished assemblies. It is appropriate for use in both light industrial and precision mechanical applications where UNF thread engagement and controlled torque are part of the assembly specification.

Key Features

• Button head profile provides a low-profile, rounded top suitable for clearance-critical assemblies
• Alloy steel construction with 36-43 HRC hardness for high tensile strength
• Black oxide coating offers mild corrosion resistance and reduced light reflection
• Fully threaded 8-36 UNF right-hand thread with Thread Fit Class 3A
• 3/32 inch hex socket drive for standard hex key or bit driver installation
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards

Compatibility

Designed as a standard UNF button socket cap screw for use in any application calling for an 8-36 thread size with a 5/8 inch length under head per ANSI/ASME B18.3 and ASTM F835 specifications.

Installation Notes

Install using a 3/32 inch hex key or matching hex bit driver. Ensure the mating threaded hole or nut is clean and free of debris before driving. Do not exceed the rated hardness class torque range for 8-36 UNF fasteners as defined by the applicable assembly specification. Black oxide coatings do not substitute for corrosion-protective plating in high-moisture or outdoor environments.