Value Collection 535116PR M8x1.25 Button Socket Cap Screw

Product Description

The VALUE COLLECTION 535116PR is an M8x1.25 button socket cap screw manufactured from alloy steel with a black oxide finish. Rated to material grade 12.9, this fully threaded fastener delivers high tensile strength and hardness in the 38-43 HRC range. The low-profile button head uses a 5 mm hex socket drive and seats flush against mating surfaces in tight-clearance assemblies. With a 30 mm length under head and right-hand thread direction, it meets both ANSI/ASME B18.3.4M and ISO 7380 standards. Licensed tradespeople and assembly technicians use this fastener where a standard socket head cap screw would protrude too far or interfere with adjacent components.

This fastener is suited for mechanical assemblies, machine frames, fixtures, and equipment enclosures where a metric M8 thread is specified and headroom is limited. The black oxide coating provides mild corrosion resistance and reduces surface reflectivity, making it appropriate for both industrial and precision-instrument applications. Thread fit classes 4G and 6G allow use in standard tolerance metric tapped holes. This screw is sold individually but carries a minimum order quantity of 100 pieces per order.

Key Features

• M8x1.25 metric thread with right-hand direction and 30 mm length under head
• Material grade 12.9 alloy steel for high tensile and shear strength
• Hardness rated 38-43 HRC for demanding load applications
• Low-profile button head reduces interference in tight-clearance assemblies
• 5 mm hex socket drive for standard Allen key or hex bit installation
• Black oxide coating for mild corrosion resistance and reduced glare
• Meets ANSI/ASME B18.3.4M and ISO 7380 fastener standards

Compatibility

Designed as a standard ISO 7380 metric button socket cap screw for use in any application requiring an M8x1.25 thread with thread fit class 4G or 6G tolerance.

Installation Notes

Installation is performed by machinists, millwrights, or mechanical technicians using a 5 mm hex key or hex socket bit. Verify that the tapped hole depth and thread class match the fastener before installation. Do not exceed the rated torque specification for grade 12.9 M8 fasteners as published in applicable ASME or ISO standards. Inspect mating surfaces for debris before seating the head to avoid damage to the low-profile button head.