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ARP 644-2250 Stainless Steel Bolt - 12-Point Kit 5-Pack

Manufacturer

Picture for manufacturer ARP

Part Number

644-2250
6 reviews
Sale Price

$16.41

Estimated ship date Friday, November 27

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 644-2250 is a premium 5-piece bolt kit featuring high-quality 12-point head fasteners designed for automotive, marine, and trailer applications. These bolts are manufactured from specially alloyed ARP 300 stainless steel, offering exceptional corrosion resistance and a polished, show-quality appearance.

Key Features:

  • Premium ARP 300 stainless steel construction with polished finish
  • 12-point head design for superior grip and reduced risk of stripping
  • Nominally rated at 180,000 psi tensile strength for exceptional holding power
  • Includes washers for complete installation
  • Rust-resistant and maintenance-free stainless steel
  • Provides substantial safety margin over standard Grade 8 hardware

ARP fasteners are trusted by professional engine builders and automotive enthusiasts worldwide for their superior quality and reliability. This bolt kit delivers both performance and aesthetics, making it ideal for visible installations where appearance matters as much as strength.

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

3/8-16 x 2.25

Thread Size

3/8-16 in.

Underhead Length (in)

2.250 in.

Washers Included

Yes

Wrench Diameter

7/16 in.

Wrenching

7/16

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Really good prices and fast delivery.

This was my first time using autoplicity and I was very happy with their service. Great prices and fast shipping.

Prices are great on this site. The layout and checkout process are easy to use; Google checkout is definitely a plus. Shipping could be a little faster, especially if they had drop ships from their supplies for items not currently in stock. Overall good service and no problems.

Great price, fast shipping. Ordered Monday afternoon and had it Wednesday morning. Their customer service is very helpful and they usually have the parts I need in stock.

Great price and quick shipping!

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