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ARP 643-4000 Stainless Steel Bolt - 12-Point Kit 5-Pack

Manufacturer

Picture for manufacturer ARP

Part Number

643-4000
6 reviews
Sale Price

$24.37

Estimated ship date Tuesday, November 24

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Product Details

The ARP 643-4000 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 ARP's specially alloyed 300 stainless steel, providing exceptional strength and corrosion resistance for critical installations.

Key Features:

  • Premium ARP 300 stainless steel construction with polished finish
  • 12-point head design for superior grip and easy installation
  • Nominally rated at 180,000 psi tensile strength
  • Substantially exceeds Grade 8 hardware specifications
  • Rust-resistant and maintenance-free
  • Includes washers for complete installation
  • 5-piece kit configuration

ARP fasteners are engineered to provide a significant safety margin over standard hardware, making them ideal for high-performance and demanding applications. The polished stainless steel finish not only delivers outstanding aesthetics but also ensures long-term durability without the need for ongoing maintenance or rust treatment.

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 4

Thread Size

7/16-14 in.

Underhead Length (in)

4.000 in.

Washers Included

Yes

Wrench Diameter

7/16 in.

Wrenching

7/16

Very fast shipping, received it Monday when I ordered it on Thursday. Thanks!

Autoplicity had the lowest list prices I could find anywhere for KC hilites! I was only going to get one pair, but the price was so good, I bought two! Shipping wasn't free and that's my only complaint. Regardless, it was only 12 dollars for a 300 and some-odd dollar order. Shipped in 3 days; should arrive soon!!!

Very helpful

best price online. fast shipping and wright part. I recommend this site to anyone!

Happy with the purchase! The lowest price and fast shipment.

I ordered a water pump from them and that Amazon was advertising as a Chrome pump. When I discovered it was not chrome, I asked to cancel the order which was prior to shipping notification. I was told by customer service it had already been sent and I would have to wait until the item was sent for a return to be processed. The return was sent back and all money was credited to my account as promised.

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