Core material: sand
An externally threaded cylindrical item, usually containing a fusible core, or a tapered smooth finished press-in insert made entirely of metallic eutectic substance. If without core, the item may be machined internally or have provisions to accomodate same. It is a safety device for aircraft wheels (prevents heat induced tire explosion), boilers, compressors, and similar equipment.
NSN 5985-00-925-0709
NSN 6645-00-450-2209
NSN 5925-01-432-1698
NSN 4140-00-185-9694
NSN 6240-01-411-1418
NSN 5925-01-444-3761
NSN 5998-01-176-3461
NSN 5999-01-394-2207
NSN 5935-01-512-4669
NSN 4140-01-490-0200
NSN 6650-00-953-9511
NSN 5920-01-217-1637