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ARP AR5-400-1LB 1/2" Individual Cylinder Head Stud 8740 Chromoly

Manufacturer

Part Number

AR5-400-1LB
Sale Price

$7.59

Out of Stock

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP AR5-400-1LB is a premium individual cylinder head stud constructed from 8740 chromoly steel with a black oxide finish. This high-strength fastener is designed for custom engine builds and replacement applications where individual studs are needed rather than complete kits.

Key Specifications:

  • Base thread size: 1/2"-13
  • Top thread size: 1/2"-20
  • Effective stud length: 5.400 inches
  • Material: 8740 chromoly steel rated at 180,000 psi tensile strength
  • Finish: Black oxide coating for corrosion resistance
  • Features broached Allen head end for easy installation

Precision Engineering:

  • Precision centerless-ground construction
  • Thread-rolled to military specification Mil-S-8879
  • Manufactured to the same exacting standards as ARP's complete stud kits

This stud is sold individually and does not include nuts or washers, which must be purchased separately. The broached Allen head end allows for controlled installation using a hex key. ARP's 8740 chromoly material provides exceptional strength and fatigue resistance, making it ideal for high-performance and racing applications where reliability is critical.

Products specifications

Base Thread Size

1/2-13 in.

Effective Stud Length (in)

5.400 in.

Fastener Finish

Black oxide

Fastener Material

8740 chromemoly

Nuts Included

No

Quantity

Sold individually.

Top Thread Size

1/2-20 in.

Washers Included

No

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