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ARP Chromoly Bolts

4.93 out of 5 stars 434 Customer Reviews

Now you can use premium-quality ARP chromoly bolts to install most anything on a car, boat, or trailer. These specially heat-treated 8740 chromoly fasteners feature a black oxide finish. They're nominally rated at 180,000 psi tensile strength to provide a substantial extra margin of safety over Grade 8 hardware. The bolts are available in a wide range of thread sizes, head styles, and other options.

Results 1 - 25 of 200

Bolts, Hex Head, Chromoly Steel, Black Oxide, 8mm x 1.25 RH Thread, 30mm UHL, Set of 5

Part Number: ARP-661-1003

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Chromoly Steel, Black Oxide, 10mm x 1.25 RH Thread, 25mm UHL, Set of 5

Part Number: ARP-663-1002

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Chromoly Steel, Black Oxide, 8mm x 1.25 RH Thread, 25mm UHL, Set of 5

Part Number: ARP-661-1002

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.000 in. UHL, Set of 5

Part Number: ARP-642-1000

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 8mm x 1.25 RH Thread, 25mm UHL, Set of 5

Part Number: ARP-671-1002

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.250 in. UHL, Set of 5

Part Number: ARP-642-1250

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Chromoly Steel, Black Oxide, 8mm x 1.25 RH Thread, 20mm UHL, Set of 5

Part Number: ARP-661-1001

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.500 in. UHL, Set of 5

Part Number: ARP-642-1500

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 6mm x 1.00 RH Thread, 16mm UHL, Set of 5

Part Number: ARP-670-1017

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Chromoly Steel, Black Oxide, 10mm x 1.50 RH Thread, 35mm UHL, Set of 5

Part Number: ARP-662-1004

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.250 in. UHL, Set of 5

Part Number: ARP-652-1250

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Custom 450, Black Oxide, 5/16 in.-18 RH Thread, 0.750 in. UHL, Set of 5

Part Number: ARP-651-0750

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.750 in. UHL, Set of 5

Part Number: ARP-642-1750

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Custom 450, Black Oxide, 1/4 in.-20 RH Thread, 1.000 in. UHL, Set of 5

Part Number: ARP-650-1000

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Chromoly Steel, Black Oxide, 10mm x 1.50 RH Thread, 25mm UHL, Set of 5

Part Number: ARP-662-1002

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 7/16 in.-14 RH Thread, 2.000 in. UHL, Set of 5

Part Number: ARP-645-2000

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Custom 450, Black Oxide, 5/16 in.-18 RH Thread, 1.500 in. UHL, Set of 5

Part Number: ARP-641-1500

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 10mm x 1.50 RH Thread, 30mm UHL, Set of 5

Part Number: ARP-672-1003

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 2.000 in. UHL, Set of 5

Part Number: ARP-652-2000

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.500 in. UHL, Set of 5

Part Number: ARP-652-1500

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Chromoly Steel, Black Oxide, 6mm x 1.0 RH Thread, 25mm UHL, Set of 5

Part Number: ARP-660-1002

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Custom 450, Black Oxide, 7/16 in.-14 RH Thread, 1.500 in. UHL, Set of 5

Part Number: ARP-643-1500

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, Hex Head, Custom 450, Black Oxide, 3/8 in.-16 RH Thread, 1.000 in. UHL, Set of 5

Part Number: ARP-652-1000

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 8mm x 1.25 RH Thread, 20mm UHL, Set of 5

Part Number: ARP-671-1001

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Bolts, 8740 Chromoly, Black Oxide, 12-Point Head, 12mm x 1.75 Thread, 35mm Underhead Length, Set of 5

Part Number: ARP-675-1003

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

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