Left hand thread
A metallic/nonmetallic item designed to mate with a regulator body for protection purposes. It may also protect a breathing apparatus component from the regulator when this one has sharp edges. It may have an orifice through which a rod, shaft, stem, or an adjusting screw passes.
NSN 5905-01-209-3308
NSN 5990-01-483-7313
NSN 7035-01-364-0286
NSN 5975-01-645-8046
NSN 5915-01-557-5332
NSN 5985-01-100-1039
NSN 6620-01-633-8443
NSN 4140-00-631-2385
NSN 5915-00-690-3451
NSN 6220-01-241-4625
NSN 5835-01-568-7796
NSN 6220-00-833-3904