2024 ARP Catalog

163 WARNING: Cancer and Reproductive Harm - www P65Warnings ca gov s l California Residents WARNING: Cancer www P65Warnings ca gov BULK FASTENERS Thread Size Socket Size Hex (1 PC-Bulk) Hex (2 PC-Pack) Hex (10 PC-Pack) Hex SS (1 PC-Bulk) 1/4-28 (2) 7/16 200-8601 s 200-8621 s 200-8631 s 5/16-18 (2) 1/2 301-8304 s 301-8324 s 301-8344 s 401-8304 l 5/16-24 3/8 200-8614 s 200-8644 s 200-8674 s 400-8614 l 5/16-24 1/2 200-8602 s 200-8622 s 200-8632 s 11/32-24 1/2 200-8603 s 200-8623 s 200-8633 s 3/8-16 (2) 9/16 200-8704 s 200-8724 s 200-8734 s 400-8704 l 3/8-24 9/16 200-8604 s 200-8624 s 200-8634 s 400-8604 l 7/16-14 (2) 5/8 301-8305 s 301-8325 s 301-8345 s 401-8305 l 7/16-20 5/8 200-8605 s 200-8625 s 200-8635 s 400-8605 l 7/16-20 11/16 200-8606 s 200-8626 s 200-8636 s 1/2-20 3/4 200-8607 s 200-8627 s 200-8637 s 400-8607 l M10 x 1 25 15mm 300-8348 s 300-8358 s 300-8368 s M12 x 1 25 18mm 300-8349 s 300-8359 s 300-8369 s SAE & Metric Hex Nuts Constructed from the finest quality materials, these hex nuts are available in most sizes to meet your needs. All hex nuts meet ARP’s exacting quality control standards and are black oxided. All hex nuts are rated 180,000 psi tensile strength. Thread Size Stainless Hex Black Oxide Hex Stainless Nyloc Hex Cad Plated Nyloc Hex STANDARD THREAD 1/4-20 400-8651 l 200-8651 s 400-8661 l 200-8661 s 5/16-18 400-8652 l 200-8652 s 400-8662 l 200-8662 s 3/8-16 400-8654 l 200-8654 s 400-8664 l 200-8664 s 7/16-14 400-8656 l 200-8656 s 400-8666 l 200-8666 s 1/2-13 400-8657 l 200-8657 s 400-8667 l 200-8667 s FINE THREAD 1/4-28 400-8751 l 400-8761 l 400-8771 s 5/16-24 400-8752 l 400-8762 l 3/8-24 400-8754 l 400-8764 l 7/16-20 400-8756 l 400-8766 l 1/2-20 400-8757 l 400-8767 l SAE & Nyloc 5-packs To compliment ARP “bulk” 5-pack chrome moly and stainless steel fasteners we have assembled matching groups of nuts. Take your pick from stainless steel and black oxide finished standard nuts or stainless steel Nyloc and cad plated Nyloc self-locking nuts. HEX UT

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