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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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S/S 12pt. Nut - 5/16-18 10pk

ARP
$29.99 - $29.99
$29.99
$34.99
$34.99 - $34.99
$34.99
10 in stock

Nut - 5/16-18 in Thread - 3/8 in 12 Point Head - Stainless - Polished - Set of 10

$29.99 - $29.99
$29.99
$34.99
$34.99 - $34.99
$34.99

1/2-13 SS 12pt Nut Kit 10pk

ARP
$45.99 - $45.99
$45.99
$58.99
$58.99 - $58.99
$58.99
11 in stock

Nut - 1/2-13 in Thread - 9/16 in 12 Point Head - Stainless - Polished - Set of 10

$45.99 - $45.99
$45.99
$58.99
$58.99 - $58.99
$58.99
Save 3% Save %

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
24 in stock

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
Only 4 left!

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
41 in stock

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
Save 10% Save %

12pt SS Nut 3/8-16 2pk

ARP
$6.99
$6.99 - $6.99
$6.99
$6.29
$6.29 - $6.29
$6.29
9 in stock

ARP 3/8-16 SS 12pt Nut Kit

$6.99
$6.99 - $6.99
$6.99
$6.29
$6.29 - $6.29
$6.29
Save 10% Save %
Save 38% Save %

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

ARP
$4.99
$4.99 - $4.99
$4.99
$3.07
$3.07 - $3.07
$3.07
10 in stock

ARP 5/16-18 SS 12pt Nut Kit

$4.99
$4.99 - $4.99
$4.99
$3.07
$3.07 - $3.07
$3.07
Save 38% Save %

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

ARP
$4.99 - $4.99
$4.99
$4.99
$4.99 - $4.99
$4.99
Only 3 left!

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
$3.13
$3.13 - $3.13
$3.13
71 in stock

ARP 3/8-16 SS 12pt Nut Kit

$2.99 - $2.99
$2.99
$3.13
$3.13 - $3.13
$3.13

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

ARP
$2.99 - $2.99
$2.99
$3.00
$3.00 - $3.00
$3.00
Only 1 left!

ARP 1/4-20 SS 12pt Nut Kit

$2.99 - $2.99
$2.99
$3.00
$3.00 - $3.00
$3.00
Save 8% Save %

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

ARP
$6.99
$6.99 - $6.99
$6.99
$6.40
$6.40 - $6.40
$6.40
Only 4 left!

ARP 1/2-20 SS Fine Nyloc Hex Nut Kit

$6.99
$6.99 - $6.99
$6.99
$6.40
$6.40 - $6.40
$6.40
Save 8% Save %
Sold out

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

ARP
$5.99
$5.99 - $5.99
$5.99
$5.30
$5.30 - $5.30
$5.30
Out of stock

ARP 7/16-20 SS Fine Hex Nut Kit

$5.99
$5.99 - $5.99
$5.99
$5.30
$5.30 - $5.30
$5.30
Sold out
Save 15% Save %

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

ARP
$4.99
$4.99 - $4.99
$4.99
$4.22
$4.22 - $4.22
$4.22
Only 1 left!

ARP 3/8-24 SS Fine Nyloc Hex Nut Kit

$4.99
$4.99 - $4.99
$4.99
$4.22
$4.22 - $4.22
$4.22
Save 15% Save %

M6 ID .890 OD Chamfer SS Washer 1pk

ARP
$2.99 - $2.99
$2.99
$3.12
$3.12 - $3.12
$3.12
73 in stock

ARP M6 ID .890 OD Chamfer SS Washer

$2.99 - $2.99
$2.99
$3.12
$3.12 - $3.12
$3.12

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

ARP
$6.99 - $6.99
$6.99
$9.99
$9.99 - $9.99
$9.99
Only 2 left!

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
Only 3 left!

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
Save 15% Save %

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

ARP
$4.99
$4.99 - $4.99
$4.99
$4.22
$4.22 - $4.22
$4.22
Only 1 left!

ARP 3/8-16 SS Coarse Nyloc Hex Nut Kit

$4.99
$4.99 - $4.99
$4.99
$4.22
$4.22 - $4.22
$4.22
Save 15% Save %
Sold out

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

ARP
$3.99 - $3.99
$3.99
$4.99
$4.99 - $4.99
$4.99
Out of stock

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
Sold out

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

ARP
$3.99 - $3.99
$3.99
$6.49
$6.49 - $6.49
$6.49
Only 1 left!

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
Only 1 left!

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
7 in stock

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
7 in stock

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
63 in stock

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
Sold out

10mm ID SS Washers 10pk .865 OD

ARP
$48.99 - $48.99
$48.99
$50.24
$50.24 - $50.24
$50.24
Out of stock

ARP M10 ID .865in OD SS Washers (10 pack)

$48.99 - $48.99
$48.99
$50.24
$50.24 - $50.24
$50.24
Sold out