ARP Expands Their Selection Of Bulk Metric Bolts

New from ARP – they have expanded their selection of bulk metric bolts. These bolts feature a 170,000 psi tensile strength and are made from rustproof stainless steel. See more details below.

Official Release:

Industry leading high performance fastener manufacturer ARP has expanded its selection of “bulk” metric bolts to cover sizes from tiny M6 with a 12mm underhead length to a big M12 x 100mmn UHL offering. The M6 bolts are made with a 1.00 pitch count, the M8 fasteners have a 1.25 count, M10s come in both 1.25 and 1.50 pitch and M12 bolts are available with 1.50 and 1.75
pitch counts.

All are available in polished stainless steel or black oxide finished 8740 chrome moly and both are rated at 170,000 psi tensile strength—substantially higher than ISO 8.8 or 10.9 specifications. Furthermore, ARP offers them with either hex or 12-point heads.

ARP’s proprietary stainless steel alloy is impervious to rust and corrosion—plus it won’t chip or peel like ordinary chrome plated bolts. They’re perfect for dressing up engine compartments, protecting chassis and suspension components from the elements, and a multitude of other applications.

They come skin packaged in handy 5-packs, as do a full lineup of SAE coarse and fine bolts. A complete listing of specifications, including grip length, wrenching size, collar diameter, etc. can be found in ARP’s 2017 catalog—available online for instant downloading—or a free printed copy of the 128-page book can be obtained by request.


  • Available in polished stainless steel or black oxide finished 8740 chrome moly
  • Rated at 170,000 psi tensile strength
  • Stainless steel alloy is impervious to rust and corrosion

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About the author

Chris McWilliams

Chris McWilliams grew up watching his dad race go-karts around his Southern Indiana home and started racing junior dragsters when he was 10 years old. Chris drove a UMP Mini Stock for two seasons until he totaled his racecar in an accident at Western Kentucky Speedway. He is currently a college student at Oakland City University working on a degree to pay the bills for his dirt racing addiction.
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