2019 ARP Catalog

119 Red part numbers indicate new items 800-826-3045 WARNING: Cancer www.P65Warnings.ca.gov. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. s l BULK FASTENERS ➊ ➋ Head Height ➌ Collar Diameter ➍ Socket Size 12-Point 8740 Black Oxide Finish 12-Point ARP Polished Stainless Steel Diameter Thread Size 1 PC Bulk 2 PC-Pack 10 PC-Pack 1 PC Bulk 2 PC-Pack 10 PC-Pack threads / inch inch inch inch 1/4 20 0.300 0.433 5/16 301-8300  l 301-8320  l 301-8340  l 401-8300  l 401-8320  l 401-8340  l 28 0.300 0.433 5/16 300-8300  l 300-8320  l 300-8330  l 400-8300  l 400-8320  l 400-8330  l 5/16 18 0.348 0.526 3/8 301-8303  l 301-8323  l 301-8343  l 401-8303  l 401-8323  l 401-8343  l 24 0.348 0.526 3/8 300-8301  l 300-8321  l 300-8331  l 400-8301  l 400-8321  l 400-8331  l 11/32 24 0.388 0.644 7/16 300-8373  l 300-8383  l 300-8393  l 3/8 16 0.390 0.625 7/16 301-8301  l 301-8321  l 301-8341  l 401-8301  l 401-8321  l 401-8341  l 24 0.390 0.625 7/16 300-8302  l 300-8322  l 300-8332  l 400-8302  l 400-8322  l 400-8332  l 24 0.420 0.700 1/2 300-8371  l 300-8381  l 300-8391  l 24 0.390 0.645 1/2 300-8372  l 300-8382  l 300-8392  l 7/16 14 0.433 0.700 1/2 301-8306  l 301-8326  l 301-8346  l 401-8306  l 401-8326  l 401-8346  l 20 0.432 0.700 1/2 300-8303  l 300-8323  l 300-8333  l 400-8303  l 400-8323  l 400-8333  l 20 0.362 0.600 1/2 300-8375  l 300-8385  l 300-8395  l 20 0.475 0.800 1/2 301-8316  l 301-8336  l 301-8356  l 20 0.504 0.823 9/16 300-8374  l 300-8384  l 300-8394  l 20 0.504 0.823 5/8 301-8314  l 301-8334  l 301-8354  l 1/2 13 0.510 0.823 9/16 301-8302  l 301-8322  l 301-8342  l 401-8302  l 401-8322  l 401-8342  l 20 0.510 0.823 9/16 300-8304  l 300-8324  l 300-8334  l 400-8304  l 400-8324  l 400-8334  l 20 0.530 0.873 5/8 300-8306  l 300-8326  l 300-8336  l 20 0.640 0.875 11/16 301-8313 s 301-8333 s 301-8353 s 9/16 12 0.620 0.965 11/16 301-8307  l 301-8327  l 301-8347  l 18 0.620 0.965 11/16 300-8305  l 300-8325  l 300-8335  l 400-8305  l 400-8325  l 400-8335  l 5/8 18 0.700 1.225 13/16 300-8309  l 300-8329  l 300-8339  l ➊ ➋ Head Height ➌ Collar Diameter ➍ Socket Size 12-Point 8740 Black Oxide Finish 12-Point ARP Polished Stainless Steel Diameter Thread Size 1 PC Bulk 2 PC-Pack 10 PC-Pack 1 PC Bulk 2 PC-Pack 10 PC-Pack thread pitch mm (in.) mm (in.) mm M6 1.00 6.1 (0.241) 10.5 (0.413) 8 300-8370  l 300-8380  l 300-8390  l 400-8370  l 400-8380  l 400-8390  l M7 1.00 7.0 (0.275) 12.0 (0.472) 9 300-8346  l 300-8356  l 300-8366  l 400-8346  l 400-8356  l 400-8366  l M8 1.00 8.1 (0.320) 15.9 (0.625) 10 300-8340  l 300-8350  l 300-8360  l 400-8340  l 400-8350  l 400-8360  l 1.25 8.1 (0.320) 13.6 (0.535) 10 300-8310  l 300-8311  l 300-8312  l 400-8310  l 400-8311  l 400-8312  l ➊ ➌ ➍ ➋ Available in a variety of sizes to suit your needs, all ARP 12-point nuts are constructed from 8740 chrome moly steel or ARP Stainless, and meet ARP’s highest standards of quality. Rated at 180,000 psi tensile strength, ARP 12-point nuts are manufactured in thick wall versions for optimum strength and rigidity and thin wall versions for applications with limited space requirements. All 8740 chrome moly steel nuts are black oxide finished and all ARP Stainless nuts are polished to a briliant luster. 12-POINT NUTS SAE 12-POINT NUTS METRIC 12-POINT NUTS

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