Material is steel, federal standard no. 66; steel no.S 1008 to 1022
A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 6110-00-647-3932
NSN 5985-01-535-3368
NSN 4140-01-631-9560
NSN 5910-01-271-5946
NSN 5905-01-556-9578
NSN 5990-00-402-7721
NSN 5990-01-271-8130
NSN 6145-00-275-4046
NSN 5905-01-147-5815
NSN 5905-01-449-2774
NSN 5935-00-808-7291
NSN 5975-01-006-5521