Sleeve type lock (u.S. Forest service fire cache), embossed serial no.
A closure device that serves as a check against tampering or unauthorized opening. The seal must be severed or mutilated before entry is possible.
NSN 7035-01-604-4501
NSN 2925-01-067-4446
NSN 5835-01-233-7033
NSN 6145-01-003-4305
NSN 4140-00-401-3123
NSN 5985-01-583-5597
NSN 6610-01-037-4392
NSN 5998-01-158-6067
NSN 2925-00-243-6841
NSN 5965-00-554-4138
NSN 5920-01-477-3616
NSN 5935-01-616-1754