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Description
ARP Hex Head Black Oxide 5/16".-18 RH Thread 1000". UHL, Set of 5 # 651-1000ARP Hex Head Black Oxide 5 16". 18 RH Thread 1000". UHL, Set of 5 # 651 1000 Bolts, Hex Head, Custom 450, Black Oxide, 5 16 in. 18 RH Thread, 1. 000 in. UHL, Set of 5 Fastener Size: 5 16 18 in. RH Underhead Length (in): 1. 000 in. Fastener Head Style: Hex head Fastener Material: Chromoly Fastener Finish: Black oxide Fastener Grade: ARP Custom 450 Fastener Yield Strength (psi): 180,000 psi Wrench Diameter: 3 8 in. Washers Included: Yes Quantity: Sold
ARP Hex Head Black Oxide 5/16".-18 RH Thread 1000". UHL, Set of 5 # 651-1000Bolts, Hex Head, Custom 450, Black Oxide, 5/16 in.-18 RH Thread, 1.000 in. UHL, Set of 5
Fastener Size:5/16-18 in. RH
Underhead Length (in):1.000 in.
Fastener Head Style:Hex head
Fastener Material:Chromoly
Fastener Finish:Black oxide
Fastener Grade:ARP Custom 450
Fastener Yield Strength (psi):180,000 psi
Wrench Diameter:3/8 in.
Washers Included:Yes
Quantity:Sold as a set of 5.
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 are nominally rated at 180,000 psi tensile strength to provide a substantial extra margin of safety over Grade 8 hardware.
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4.6 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 2
Quality control lacking
One tee conector was missing. Nothing avaliable locally that fits.
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Reviewed in the United States on July 13, 2025
★★★★★ 1
It doesn’t stay in
The pipe keeps coming out. Not worth the money. Not sturdy to hold a top table.
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Reviewed in the United States on February 20, 2024
★★★★★ 2
Good finish, poor hardware.
Set screws are poor quality and are sometimes powdercoated on the exposed threads. Leads to striped hex sockets and inability to tighten properly.
Durable finish as evidenced by no visible damage after throwing parts across the shop in frustration.
Ended up running self tapping screws thru parts to complete assembly.
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Reviewed in the United States on February 26, 2024
★★★★★ 1
Kinda flimsy…
Thought the assembly was metal, it’s some kind of PVC.
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Reviewed in the United States on September 22, 2025
★★★★★ 5
Great references book.
Format: Hardcover
Excellent book for medical reference and refresh of knowledge.
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Reviewed in the United States on April 28, 2026