We understand the difficulties by the end-users and purchasing departments in choosing the right components for different installation methods of High-strength structural bolting assemblies for preloading (HR) . Different installation methods and product grades may require additional components like DTI washers , hardened washers, bolt face or nut face washers. Sometimes, the number and type of component change, depending on which part is rotated (the nut or the bolt head).
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Load curve graph for DTI for test compression loads at 0.40mm gap For use with bolts Compression load (kN) diameter Designation H8 Designation H10 M12 47-56 59-71 M16 88-106 110-132 M20 137-164 172-206 M22 170-204 212-254 M24 198-238 247-296 M27 257-308 321-385 M30 314-377 393-472 M36 458-550 572-688 Compressible washer-type direct tension indicator according to BS EN 14399-9:2018, Table 4.
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Andrews Fasteners Limited The Fasteners Specialist Andrews Fasteners supply quality assured CE & UKCA approved and other fasteners to various industries at competitive prices. Andrews Fasteners reputation for quality assured products and service is the foundation on which the company stands. Our quality systems are independently assessed, certified and approved to BS EN ISO 9001:2015 NHSS3 (National Highway Sector Scheme 3) CPR (Construction Product Regulation) for:
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Content with Washer