Value Collection 532543BR M18x2.5 Hex Socket Cap Screw

Product Description

The VALUE COLLECTION 532543BR is a metric hex socket cap screw designed for high-strength fastening applications across industrial, mechanical, and structural assemblies. This screw features an M18 x 2.50 thread size with a 140 mm length under head and is partially threaded, making it suitable for through-bolt and clamped-joint configurations where thread engagement needs to be controlled. Manufactured from alloy steel to material grade 12.9, it delivers high tensile and yield strength. The black oxide finish provides moderate corrosion resistance and reduces light reflection in precision environments. Licensed trades and industrial maintenance technicians are the primary installers.

This fastener is commonly used in heavy machinery assembly, structural brackets, tooling fixtures, and equipment frames where high-clamp-load connections are required. The partially threaded shank helps align mating components and distributes shear loads along the unthreaded body. It is driven with a hex socket wrench or hex key, making it practical in recessed or counter-bored applications where a conventional bolt head would interfere with surrounding geometry. Suitable for both shop fabrication and field maintenance work.

Key Features

• M18 x 2.50 thread size — coarse metric pitch for robust engagement
• 140 mm length under head with partial threading for shank-load distribution
• Alloy steel construction rated to material grade 12.9 for high tensile strength
• Black oxide finish for moderate corrosion resistance and low reflectivity
• Hex socket drive for use in recessed or counter-bored installations
• Meets DIN 912 and ISO 898-1 fastener standards

Compatibility

Designed as a standard DIN 912 metric hex socket cap screw suitable for M18 x 2.50 threaded bores in machinery, structural, and equipment assemblies requiring grade 12.9 alloy steel fasteners.

Installation Notes

Installation should be performed by a qualified mechanic or industrial technician familiar with metric fastener torque requirements for grade 12.9 hardware. Always clean and inspect threaded bores before installation and use calibrated torque equipment rated for the required clamp load. Avoid mixing with lower-grade fasteners in the same joint. Applying a thread lubricant or anti-seize compound will affect torque-to-clamp-load calculations and should only be done per the joint design specification.