Used on common stores dolly. 0.560" hole diameter 1.250" outside diameter 0.420" material thickness washer, tube zdrawing shows 1.250 in. square washer but notes that washer can be 1.250 in. round one; min. thickness at outer edge is 0.250 in, then rounds out to 0.420 in.; finish is iaw naval air syastems command dwg. no: 3003-3637AS690, type ii convex
Used on hardware. old name nut plain hexagon thread size 1.000 in; threads per inch 8; class 2b; direction rt; nut height 0.965 min 1.012 max; width acroos flats 1.575 min 1.625 max; hardness rating 24.0 min 38.0 max zinc surface treated
Used on interim armored vehicle (iav),contractor logistics support (cls). 6.2mm hole diameter 12.2mm outside diameter 0.5mm material thickness item is called lockwasher, toothed flat external teeth
