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.
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).
Catalog page 386