ARP hex nuts are made from aerospace-quality material. They are available in chromoly or stainless steel, with hex-style heads. They come in many sizes to meet just about all of your needs and are rated at 180,000 psi tensile strength.

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ARP Nut, Hex, 8740 Chromoly, Steel, Black, Flanged, 5/16 in.-24 Thread, 180000psi, Each

ARP Nut, Hex, 8740 Chromoly, Steel, Black, Flanged, 5/16 in.-24 Thread, 180000psi, Each

$1.51

Wilwood Nut, 5/16-24, Hex, Thin Nylock

Wilwood Nut, 5/16-24, Hex, Thin Nylock

$0.33

ARP Nut, 12-point, 8740 Chromoly, Steel, Black, 5/16 in.-18 Thread, 180000psi, Each

ARP Nut, 12-point, 8740 Chromoly, Steel, Black, 5/16 in.-18 Thread, 180000psi, Each

$3.96

ARP Nut, 12-point Reduced Wrenching, Carbon Steel, Cadmium/Chromate, Self Locking, 5/16 in.-24 Thread, Each

ARP Nut, 12-point Reduced Wrenching, Carbon Steel, Cadmium/Chromate, Self Locking, 5/16 in.-24 Thread, Each

$6.09

ARP Nut, 12-point, ARP Stainless Steel, Polished, 7/16 in.-20 Thread, 180000psi, Set of 10

ARP Nut, 12-point, ARP Stainless Steel, Polished, 7/16 in.-20 Thread, 180000psi, Set of 10

$63.84