Used on 1940-01-526-7164, mk3 bridge erection boat. 2b thread class right-hand 20 thread quantity per inch 1/4" - 20 n.c. fin. hex nut material is 18-8 stainless steel
2b thread class right-hand 20 thread quantity per inch nut has shoulder height of 0.125". the chamfer of this nut is .020" X45 degrees to eliminate a local stress concentration at the tip of the nut. this nut is dyed bright blue to make it easily distinguishable.
Used on 2420-01-532-3399; tractor, wheeled, industrial. 6h thread class right-hand finished regular hex nuts, metric fine pitch threads chromate zinc base surface treated