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The VALUE COLLECTION 42753 is a fully threaded hex socket cap screw designed for high-strength mechanical fastening in industrial, HVAC, plumbing, and equipment assembly applications. Manufactured from alloy steel to material grade 12.9 and finished with a black oxide coating, this fastener delivers high tensile strength and moderate corrosion resistance in a compact, socket-drive form factor. The M8 x 1.25 thread pitch and 35 mm length under head make it suitable for medium-duty structural connections where torque capacity and reliable clamping force are required. It is driven with a hex key and conforms to DIN 912 and ISO 898-1 standards.
This screw is commonly used in equipment panels, mechanical assemblies, pump housings, fan brackets, and structural components found in commercial and residential HVAC systems, plumbing infrastructure, and general industrial equipment. The black oxide finish reduces light reflection and provides a degree of surface protection in low-moisture environments. Sold as a single piece with a minimum order quantity of 50 units, making it appropriate for service shops, maintenance operations, and light manufacturing environments that require consistent fastener inventory.
Designed as a standard DIN 912 metric hex socket cap screw for use in any M8 x 1.25 threaded application requiring a grade 12.9 alloy steel fastener with a black oxide finish.
Installation should be performed by a qualified mechanic or maintenance technician using a calibrated torque wrench and the appropriate metric hex key or socket driver. Ensure mating threads are clean, undamaged, and free of debris before installation. Grade 12.9 fasteners are not suitable for use in applications requiring weldable or heat-treated assemblies where fastener grade may be compromised. Follow applicable equipment manufacturer torque specifications for M8 grade 12.9 hardware.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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