Because races can be won or lost in the pits, the engineers at ARP set out to create the ultimate competition wheel stud for oval track racing that facilitates quicker release/tightening of lug nuts and accurate wheel positioning.
A large number of NASCAR teams in Sprint Cup, Nationwide, and Camping World Truck Series use ARP's new Speed Studs (and companion Speed Nuts) exclusively.
Made from heat-treated 200,000 psi chrome moly steel, they feature precision J-form threads (formed after heat-treat for improved fatigue strength), exclusive nut-starter, and bullet shape radius that nearly eliminates cross-threading, shot-peening, special baked-on dry film lubricant (reduces the possibility of galling and assures consistent clamp loads), and double magnaflux inspection.
A new head design fits the registers of all popular hubs without grinding, and studs are available in 31 underhead lengths to provide optimum thread engagement for your particular setup.
The finest studs available Speed Nuts are designed for professional racing environments where split-second improvements in pit stop times can make the winning difference, and unbustable reliability is an absolute must.
ARP's Speed Nuts feature a profiled nut face for easy installation, quicker socket releases, and resistance to jamming.
Made from premium heat-treated chrome moly that's nominally rated at 200,000 psi tensile strength, shot-peened to remove stress risers, and double magnafluxed after heat-treating and thread-forming to assure 100 metallurgical integrity.
Coated with Alumotef III gold coating.
Speed Nuts are ready for instant use (thread chasing not required).
NASCAR Speed Studs Fine Thread (5/8-18) 5 Pieces Knurl Length (L3) 1.55 Thread Length (L1) 2.75 UHL (L2) 3.6.
