Used on aircraft, orion p-3. 3a thread class right-hand knurled no. 1 head style 32 thread quantity per inch anodize stand-off surface treated unf thread series
2a thread class right-hand 0.375" thread length knurled no. 1 head style 32 thread quantity per inch navy special project passivate surface treated unc thread series
2a thread class right-hand 0.375" thread length knurled no. 1 head style 20 thread quantity per inch straight knurl passivate surface treated unc thread series
2a thread class right-hand 0.375" thread length knurled no. 4 head style 20 thread quantity per inch color black; straightknurl oxide fastener surface treated unc thread series
2a thread class right-hand 0.375" thread length knurled no. 1 head style 32 thread quantity per inch finish color black fastener chromate zinc fastener surface treated unf thread series
2a thread class right-hand 0.281" thread length knurled no. 1 head style 40 thread quantity per inch navy special project retainer is thermo-plastic passivate surface treated unc thread series
3a thread class right-hand 0.558" thread length pan no. 2 head style 32 thread quantity per inch navy special project color head cadmium fastener surface treated unf thread series
3a thread class right-hand 0.285" thread length flat chamfer head style 32 thread quantity per inch chromate stand-off surface treated unf thread series
Used on helicopter observation, oh-58d. 3a thread class right-hand 0.522" thread length flat chamfer head style 32 thread quantity per inch chromate stand-off surface treated unf thread series
2a thread class right-hand 0.483" thread length flat chamfer head style 32 thread quantity per inch navy special project straight knurl on head anodize head surface treated unc thread series
2a thread class right-hand 0.175" thread length flat countersunk head style 40 thread quantity per inch navy special project cadmium fastener surface treated unc thread series
2a thread class right-hand 0.203" thread length flat countersunk head style 32 thread quantity per inch navy special project passivate surface treated unc thread series
3a thread class right-hand knurled no. 1 head style 28 thread quantity per inch encapsulated 0 ring, metel 301, 304 cres, per mil-s-5059, o ring nitrile per mil-r-7362 type 2 anodize stand-off surface treated unf thread series