Makes Parts & Put Them Right To Work; No Heat Treating Required
Superior quality, high density; is very machineable and tough without brittleness, due to a higher ratio of manganese to carbon. Does not require heat treating like low density mild steel - perfect for spring guides, screws, firing pins, any parts that will be subject to extreme shock or repeated stress. Fatigueproof® is a registered trademark of Niagara LaSalle Corporation.
Big Book Catalog, Issue:69, Page:383
SPECS: ¼" (6.3mm), 5/16" (7.9mm), 3/8" (9.5mm)
diameter. 18" (45.7cm) long steel rods. 6 rods per pak. Assortment
contains 2 of each size. 140,000 psi tensile strength, Rc 30-36.
Tolerances are + or – .006" (.15mm).