ARP nuts are made from quality stainless steel material with a self-locking nylon insert. They come available in many sizes to meet just about all of your needs.

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ARP Nut, Hex, Serrated Flange, Stainless Steel, Polished, 5/16 in.-24 RH Thread, Each

ARP Nut, Hex, Serrated Flange, Stainless Steel, Polished, 5/16 in.-24 RH Thread, Each

$2.21

ARP Nut, Hex, Steel, Cadmium, Serrated Flange, 3/8 in.-24 Thread, Set of 2

ARP Nut, Hex, Steel, Cadmium, Serrated Flange, 3/8 in.-24 Thread, Set of 2

$3.08

ARP Nut, 12-point Reduced Wrenching, Carbon Steel, Cadmium/Chromate, Self Locking, 3/8 in.-24 Thread, Each

ARP Nut, 12-point Reduced Wrenching, Carbon Steel, Cadmium/Chromate, Self Locking, 3/8 in.-24 Thread, Each

$6.09

ARP Nut, Hex Head, Stainless Nyloc, Polished, 7/16 in.-20 Fine Thread, Set of 5

ARP Nut, Hex Head, Stainless Nyloc, Polished, 7/16 in.-20 Fine Thread, Set of 5

$10.62

ARP Nut, Plate Style, Self-locking, Steel, Cadmium Finish, 1/4-28 in. Thread Size, Each

ARP Nut, Plate Style, Self-locking, Steel, Cadmium Finish, 1/4-28 in. Thread Size, Each

$6.63