Shouldered one surface 0.125 in. Lg, grooved one side 0.047 in.
A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Nuts of iron or steel
NSN 5915-01-098-8610
NSN 6685-00-834-0494
NSN 5855-00-472-2055
NSN 5985-00-103-7019
NSN 5910-01-494-8386
NSN 5965-00-957-5200
NSN 7035-01-210-5111
NSN 5975-01-116-8101
NSN 5990-01-351-4621
NSN 6610-01-464-3037
NSN 5920-01-381-6361
NSN 5975-01-631-4371