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ARP

Back the early 1970s, racing enthusiast Gary Holzapfel saw that many of his friends’ broken engines were caused by fastener failure. At the time, there were no commercially available studs and bolts up to the challenge. So Holzapfel called upon his many years of fastener making experience for a leading aerospace subcontractor and founded ARP (Automotive Racing Products). ARP’s product line contains thousands of part numbers, and has expanded to include virtually every fastener found in an engine and driveline and throughout the suspension and frame. These range from quality high performance OEM replacement parts to exotic specialty hardware for Formula 1, IndyCar, NASCAR and NHRA drag racing and marine applications.

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3/8-16 SS 12pt Nut Kit 10pk

ARP
$30.99
$30.99 - $30.99
$30.99
$29.99
$29.99 - $29.99
$29.99

Nut - 3/8-16 in Thread - 7/16 in 12 Point Head - Stainless - Polished - Set of 10

$30.99
$30.99 - $30.99
$30.99
$29.99
$29.99 - $29.99
$29.99
Save 3% Save %

1/4-20 SS 12pt Nut Kit (10pk)

ARP
$28.99 - $28.99
$28.99
$28.99
$28.99 - $28.99
$28.99

Nut - 1/4-20 in Thread - 5/16 in 12 Point Head - Stainless - Polished - Set of 10

$28.99 - $28.99
$28.99
$28.99
$28.99 - $28.99
$28.99

12pt SS Nut 5/16-18 2pk

ARP
$5.99 - $5.99
$5.99
$6.99
$6.99 - $6.99
$6.99

Nut - 5/16-18 in Thread - 3/8 in 12 Point Head - Stainless - Polished - Pair

$5.99 - $5.99
$5.99
$6.99
$6.99 - $6.99
$6.99

12pt SS Nut 3/8-16 2pk

ARP
$6.99 - $6.99
$6.99
$6.99
$6.99 - $6.99
$6.99

Nut - 3/8-16 in Thread - 7/16 in 12 Point Head - Stainless - Polished - Pair

$6.99 - $6.99
$6.99
$6.99
$6.99 - $6.99
$6.99

S/S 12pt. Nut - 5/16-18 (1)

ARP
$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

Nut - 5/16-18 in Thread - 3/8 in 12 Point Head - Stainless - Polished - Each

$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

S/S 12pt. Nut - 1/2-13 (1)

ARP
$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

Nut - 1/2-13 in Thread - 9/16 in 12 Point Head - Stainless - Polished - Each

$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

S/S 12pt. Nut - 3/8-16 (1)

ARP
$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

Nut - 3/8-16 in Thread - 7/16 in 12 Point Head - Stainless - Polished - Each

$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

S/S 12pt. Nut - 1/4-20 (1)

ARP
$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

Nut - 1/4-20 in Thread - 5/16 in 12 Point Head - Stainless - Polished - Each

$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

S/S 6pt. Fine Nyloc Nuts - 1/2-20 (5)

ARP
$6.99 - $6.99
$6.99
$6.99
$6.99 - $6.99
$6.99

Nut - Locking - 1/2-20 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$6.99 - $6.99
$6.99
$6.99
$6.99 - $6.99
$6.99

S/S 6pt. Fine Nyloc Nuts - 7/16-20 (5)

ARP
$5.99 - $5.99
$5.99
$5.99
$5.99 - $5.99
$5.99

Nut - Locking - 7/16-20 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$5.99 - $5.99
$5.99
$5.99
$5.99 - $5.99
$5.99

S/S 6pt. Fine Nyloc Nuts - 3/8-24 (5)

ARP
$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

Nut - Locking - 3/8-24 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

M6 ID .890 OD Chamfer SS Washer 1pk

ARP
$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

Flat Washer - Chamfered - 6 mm ID - 0.98 in OD - 0.165 in Thick - Stainless - Natural - Each

$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

S/S Hex Nyloc Nuts 1/2-13 (5)

ARP
$6.99 - $6.99
$6.99
$9.99
$9.99 - $9.99
$9.99

Nut - Locking - 1/2-13 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$6.99 - $6.99
$6.99
$9.99
$9.99 - $9.99
$9.99

S/S Hex Nyloc Nuts 7/16-14 (5)

ARP
$4.99 - $4.99
$4.99
$6.99
$6.99 - $6.99
$6.99

Nut - Locking - 7/16-14 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$4.99 - $4.99
$4.99
$6.99
$6.99 - $6.99
$6.99

S/S Hex Nyloc Nuts 3/8-16 (5)

ARP
$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

Nut - Locking - 3/8-16 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99

S/S Hex Nyloc Nuts 5/16-18 (5)

ARP
$3.99 - $3.99
$3.99
$4.99
$4.99 - $4.99
$4.99

Nut - Locking - 5/16-18 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$3.99 - $3.99
$3.99
$4.99
$4.99 - $4.99
$4.99

S/S Hex Nyloc Nuts 1/4-20 (5)

ARP
$3.99 - $3.99
$3.99
$6.49
$6.49 - $6.49
$6.49

Nut - Locking - 1/4-20 in Thread - Hex Head - Nylon Insert - Stainless - Polished - Set of 5

$3.99 - $3.99
$3.99
$6.49
$6.49 - $6.49
$6.49

S/S Hex Nuts - 3/8-16 (5)

ARP
$4.99 - $4.99
$4.99
$5.99
$5.99 - $5.99
$5.99

Nut - 3/8-16 in Thread - 9/16 in Hex Head - Stainless - Polished - Set of 5

$4.99 - $4.99
$4.99
$5.99
$5.99 - $5.99
$5.99

S/S Flat Washers - 5/16 ID x .625 OD (10)

ARP
$14.99 - $14.99
$14.99
$14.99
$14.99 - $14.99
$14.99

Flat Washer - Special Purpose - Chamfered - 0.313 in ID - 0.625 in OD - 0.12 in Thick - Stainless - Polished - Set of 10

$14.99 - $14.99
$14.99
$14.99
$14.99 - $14.99
$14.99

S/S Flat Washers - 7/16 ID x 13/16 OD (10)

ARP
$12.99 - $12.99
$12.99
$12.99
$12.99 - $12.99
$12.99

Flat Washer - Special Purpose - Chamfered - 0.438 in ID - 0.821 in OD - 0.12 in Thick - Stainless - Polished - Set of 10

$12.99 - $12.99
$12.99
$12.99
$12.99 - $12.99
$12.99

S/S Flat Washers - 3/8 ID x 3/4 OD (10)

ARP
$12.99 - $12.99
$12.99
$12.99
$12.99 - $12.99
$12.99

Flat Washer - Special Purpose - Chamfered - 0.375 in ID - 0.75 in OD - 0.12 in Thick - Stainless - Polished - Set of 10

$12.99 - $12.99
$12.99
$12.99
$12.99 - $12.99
$12.99

10mm ID SS Washers 10pk .865 OD

ARP
$48.99 - $48.99
$48.99
$49.99
$49.99 - $49.99
$49.99

Flat Washer - Special Purpose - Chamfered - 10 mm ID - 0.865 in OD - 4.1 mm Thick - Stainless - Polished - Set of 10

$48.99 - $48.99
$48.99
$49.99
$49.99 - $49.99
$49.99

S/S Flat Washers - 7/16 ID x .812 OD (2)

ARP
$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

Flat Washer - Special Purpose - Chamfered - 0.438 in ID - 0.812 in OD - 0.12 in Thick - Stainless - Polished - Pair

$2.99 - $2.99
$2.99
$2.99
$2.99 - $2.99
$2.99

S/S Flat Washers - 3/8 ID x .715 OD (10)

ARP
$12.99 - $12.99
$12.99
$12.99
$12.99 - $12.99
$12.99

Flat Washer - Special Purpose - 0.375 in ID - 0.715 in OD - 0.12 in Thick - Stainless - Polished - Set of 10

$12.99 - $12.99
$12.99
$12.99
$12.99 - $12.99
$12.99