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ARP 645-3500 Stainless Steel Bolt - 12-Point Kit 5-Pack

Manufacturer

Picture for manufacturer ARP

Part Number

645-3500
9 reviews
Sale Price

$23.41

Estimated ship date Thursday, February 11

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The ARP 645-3500 is a premium 5-piece bolt kit featuring high-quality 12-point stainless steel fasteners designed for automotive, marine, and trailer applications. These bolts are manufactured from specially alloyed ARP 300 stainless steel with a tensile strength nominally rated at 180,000 psi, providing a substantial safety margin over standard Grade 8 hardware.

Key Features:

  • Premium ARP 300 stainless steel construction for maximum strength and corrosion resistance
  • 12-point head design for improved grip and reduced fastener rounding
  • 180,000 psi tensile strength rating exceeds Grade 8 specifications
  • Specially polished finish for superior appearance
  • Rust-resistant and maintenance-free performance
  • Includes matching washers for complete installation
  • 5-piece kit provides convenient replacement or project supply

ARP fasteners are engineered to deliver reliability and performance in demanding applications where standard hardware may fail. The stainless steel construction ensures long-lasting durability while maintaining an attractive, corrosion-free finish even in harsh environments.

Products specifications

Fastener Finish

Black oxide

Fastener Head Style

12-Point

Fastener Material

Chromemoly

Fastener Yield Strength (psi)

170,000 psi

Material

Black Oxide

Quantity

Sold as a set of 5.

Size

7/16-14 x 3.5

Thread Size

7/16-14 in.

Underhead Length (in)

3.500 in.

Washers Included

Yes

Wrench Diameter

1/2 in.

Wrenching

1/2

I could not find this part and I needed help so I called in . A gentleman named Hector helped me out and made things easier for me.

Good description of parts. Now to hope what I get fits.

Great company to do business with! Ordered a Thule 916XTR bike rack for my car and their prices blew away everyone else on the 'net! Ordered on Sunday, they shipped on Monday and sent me a tracking number that night. Super fast shipping and great communication! I'll definitely be coming back to Autoplicity again!

Trustworthy seller. This is my second order. Got it quickly. good job!

Super fast shipping, easy to use site, would buy again from site

competitive prices and good selection. Will definitely look to this vendor when purchasing automotive parts in the future. I ordered a roof rack and it was very hard to find elsewhere and the few places I did find it, it was more expensive.. it was cheap and easy here. thanks :)

Lowest price on the Internet, good packaging and fast shipping.

Ordering was simple and shipped quickly. Received undamaged and exactly what i ordered. will order from them again.

Price was the lowest for the product that I wanted. That's including shipping price, which was still cheaper. Will definitely look into other products from them.

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