(L1) Thread Length 2.600", (l2) Under Head Length 3.450", (L3) Knurl Length 1.500", with a thread size of 5/8" - 18" and a Knurl Diameter or Seat of .660", ARP Speed Studs 300-7718.
Because races can be won or lost in the pits, the engineers at ARP set about to create the ultimate oval track competition wheel stud that facilitates quicker release/tightening of lug nuts and accurate wheel positioning.
ARP’s new “Speed Studs” (and companion “Speed Nuts”) are so good that a large number of NASCAR teams in Sprint Cup, Nationwide and Camping World Truck series use them exclusively.
Made from heat-treated 190,000 psi chrome moly steel, ARP Speed Studs feature precision J-form threads (formed after heat-treat for improved fatigue strength), exclusive nut-starter and bullet shape radius that all but eliminates cross-threading, shot-peening, special baked-on dry film lubricant (reduces possibility of galling and assures consistent clamp loads), and double magnaflux inspection.
A new head design is employed that fits the registers of all popular hubs without grinding, and studs are available in 27 underhead lengths to provide you with the optimum thread engagement for your particular setup.
The finest studs available!
NOTE: All ARP Speed Studs that are Fine Thread fit Stock Car Products and Speedway Engineering Hubs without Grinding or Modifications.
