Value Collection 701012PR Button Socket Cap Screw 1-72

Product Description

The VALUE COLLECTION 701012PR is a button socket cap screw designed for precision fastening applications requiring a low-profile head and high tensile strength. This fully threaded screw features a hex socket drive, 1-72 UNF thread, and a 1-inch length under the head. Manufactured from alloy steel with a black oxide coating, it meets ANSI/ASME B18.3 and ASTM F835 standards. The hardness rating of 36-43 HRC makes it suitable for demanding mechanical assemblies. Machinists, maintenance technicians, and assembly professionals install this fastener where flush or recessed head clearance is critical.

This screw is commonly used in precision instrument assemblies, light machinery, electronics enclosures, and mechanical sub-assemblies where a compact button head profile is required. The 1-72 UNF thread pitch is a fine-thread designation suited to thin-section or tapped-hole applications. The black oxide finish provides mild corrosion resistance and reduces light reflection, making it a common choice in optical, electronic, and industrial panel applications. A Thread Fit Class of 3A ensures close tolerancing for reliable mating with precision-tapped holes.

Key Features

• Button head, hex socket drive for low-profile installation with Allen wrench or hex key
• 1-72 UNF fully threaded, right-hand thread direction
• Alloy steel construction with 36-43 HRC hardness for high-strength fastening
• Black oxide coating for mild corrosion resistance and reduced reflectivity
• Meets ANSI/ASME B18.3 and ASTM F835 fastener standards
• Thread Fit Class 3A for precision tolerance mating

Compatibility

Designed as a standard-dimension button socket cap screw per ANSI/ASME B18.3 for use in any tapped hole or mating nut conforming to 1-72 UNF specifications with a Thread Fit Class 2B or 3B internal thread.

Installation Notes

Install using a properly sized hex key or Allen driver to avoid rounding the socket. Ensure the mating tapped hole conforms to 1-72 UNF thread form and tolerance before installation. Do not exceed the recommended seating torque for the thread size and material combination — consult published torque tables for 1-72 alloy steel fasteners. Follow applicable ASME or facility-specific mechanical assembly procedures when torquing safety-critical connections.