ARP Main Stud Kit BB Ford 429 460 2-Bolt Main 155-5402

ARP Crankshaft Main Stud Kit

Ford Big Block 429 460 2-Bolt Main

ARP #15-5402 or 1555402

Fastener Style: Stud
Bolt Quantity: 10
Includes Nuts: Yes
Includes Washers: Yes
Material: 8740 Chrome Moly
Yield Strength: 180,000 PSI
Tensile Strength: 200,000 PSI

8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.