M6 x 1.00 x 135 hex black oxide bolts

M6 x 1.00 x 135 hex black oxide boltsMaterial: 8740 Chrome Moly Finish: Black Material 2: Finish 2: Origin: USA

ARP only uses premium grade 8740 alloy anda proprietary ARP2000® alloy that are rated far superior to “aircraft”quality alloy steels

They’re application-specific

while the bolt kits come with washers

choice of hex or 12-bolt head

Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for theadditional compression of gaskets

ARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12-point nuts

Dodge/Cummins and Ford Power Stroke engines are all assembled using “Torque To Yield” (TTY) bolts and preloaded to yield and beyond (typically 100-110%)

There are many important reasons to use ARP main stud kits

Alternators that come loose are a pain

If there is a permanent increase of

They are available in several different strength materials to safely handle applications from performance street to all-out competition

Wide underhead flange and companion washers provide even load distribution