Serving our customers with quality and safety first.
cres, QQ-S-763 or AMS5639 rockwell hardness rating 83-93R15t, heat treated per MIL-H-6875 per united aircraft spec no. HS461, 0.960 in. min, 0.964 in. max, o/d, 0.120 in. thk 0.640 in. min. 0.680 in. max, i/d center hole, 0.908 in. min, 0.897 in. max, o/d of counter bore, 0.080 in. min, 0.090 in. max thk counter bore
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FSC 2915 ⁓ Engine fuel system components, aircraft and missile prime movers
Note-fuel components specially designed for propulsion fuel systems, aircraft and missiles are to be placed in this fsc.
Excluding aircraft fuel tanks (fsc 1560); in-flight refueling system fuel components (fsc 1680). fuel system components not specifically designed for use with aircraft engines or missile prime-movers.