Catalog Supplement for 2006 - JRP
Catalog Supplement for 2006 - JRP
Catalog Supplement for 2006 - JRP
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THE COMPANY<br />
Following the basic shaping, material is heat-treated to<br />
desired levels. This crucial process is done entirely in-house<br />
to assure total quality control. ARP uses special vertical racks<br />
to hold each piece individually and assure complete 360° penetration.<br />
This is far superior to commonly-used methods of<br />
dumping items into a large bin and batch-treating.<br />
Studs are centerless ground to guarantee concentricity. The<br />
thread rolling operation (to MIL-S-8879A specs) is done after<br />
heat-treat, which accounts <strong>for</strong> a fatigue strength up to ten times<br />
higher than fasteners which are threaded prior to heat-treat.<br />
ARP manufactures nuts in a multi-step process that begins<br />
with raw material being fed into a giant <strong>for</strong>ming device that<br />
“blanks” the hex and 12-point nuts and continues with highly<br />
sophisticated automated threading equipment tapping each<br />
nut with an accuracy of .001˝ (which is five times higher than<br />
the aerospace standard). This ensures an exceptionally closetolerance<br />
fit between the bolt/stud and nut.<br />
Metal finishing is also per<strong>for</strong>med in-house at ARP.<br />
Operations include black oxide coating of chrome moly or<br />
polishing stainless steel to a brilliant luster.<br />
The Grinding Department is where all studs are centerless ground to<br />
ensure that they are perfectly concentric. As many as ten machining<br />
steps are required to achieve this level of accuracy.<br />
Powerful cold-<strong>for</strong>ging equipment is used to make<br />
ARP’s hex and 12-point nuts. Multi-stage dies are<br />
employed to precision-<strong>for</strong>m the finished “blanks.”<br />
A series of CNC-threading machines are employed by ARP to accurately tap the threads in<br />
nuts. Tolerances held are 5 times better than aerospace standards.<br />
6<br />
Heat-treating is critically important in obtaining the correct tensile strength.<br />
Fasteners are placed in special vertical racks to ensure complete 360˚ penetration.<br />
ARP per<strong>for</strong>ms the thread<br />
rolling operation after<br />
heat-treating, which results<br />
in a fatigue strength up to<br />
10-times higher than fasteners<br />
with threads rolled prior<br />
to elevating the material’s<br />
tensile strength.<br />
800-826-3045