2022 ARP Catalog

163 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. s l California Residents WARNING: Cancer www.P65Warnings.ca.gov. 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 as- sembled matching groups of nuts. Take your pick from stainless steel and black oxide fin- ished standard nuts or stainless steel Nyloc and cad plated Nyloc self-locking nuts. HEX NUTS

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