Cognizant service: navy
A close-coiled helical extension spring, with ends fastened together to form a circle, designed to impose compression stresses toward the center of the circle thus formed when uniformly expanded.
NSN 5930-00-425-9803
NSN 6145-01-221-2458
NSN 5925-01-116-4439
NSN 5935-00-106-5431
NSN 5895-01-282-2321
NSN 5998-01-201-7397
NSN 5910-01-546-0808
NSN 6135-00-816-9052
NSN 5985-00-268-3778
NSN 5920-01-552-2807
NSN 6610-01-045-9419
NSN 6145-01-291-2287