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The VALUE COLLECTION 217431 is a metric hex head cap screw designed for general-purpose mechanical assembly where corrosion resistance is required. Built from 18-8 austenitic Grade A2 stainless steel with a bright, uncoated finish, this fastener delivers reliable performance in wet, chemical-exposure, or outdoor environments. It measures M20 x 2.50 thread pitch with a 70 mm length under the head and features full threading along the shank per DIN 933. The 30 mm hex drive size accepts standard metric wrenches. Licensed tradespeople and maintenance technicians commonly install this fastener in structural, mechanical, and industrial equipment assemblies.
This screw is suited for metric-spec applications in HVAC equipment mounting, plumbing fixture support, electrical enclosure assembly, and general industrial fabrication. Its fully threaded shank makes it appropriate for through-bolted connections and shorter clamping lengths. The DIN 933 standard ensures dimensional consistency with metric hardware across European and internationally sourced equipment platforms. Sold individually, it fits low-quantity repair and replacement needs as well as single-point procurement for MRO work orders.
Designed as a DIN 933-compliant metric hex head cap screw suitable for use wherever an M20 x 2.50 fully threaded fastener in Grade A2 stainless steel is specified.
Installation is appropriate for qualified maintenance technicians and mechanical tradespeople. Always verify that mating threads are clean and free of debris before driving to avoid cross-threading in the M20 thread form. Use a calibrated metric torque wrench and follow the torque specifications provided by the equipment manufacturer for the application. Stainless steel fasteners are susceptible to galling; applying an appropriate anti-seize compound to the threads before installation is strongly recommended.
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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