Used on aircraft, eagle f-15,aircraft, harrier av-8b,aircraft, hornet f/a-18,f/a-18e/f hornet aircraft. undersized oval countersunk head style 50000 single pounds per square inch shear strength
2a thread class right-hand 0.375" thread length knurled no. 1 head style 32 thread quantity per inch fastener oxide fastener surface treated unc thread series