Cruciform Recess, Full Thread, 160,000 PSI Tensile Minimum Alloy Steel and A286
Corrosion Resistant Steel These replace NAS1096 of same sizes
FIRST DASH NUMBER INDICATES DIAMETER; SECOND DASH NUMBER INDICATES LENGTH IN 1/16 INCH INCREMENTS. NO LETTER AFTER FIRST DASH NUMBER INDICATES UNDRILLED HEAD. LETTER “D” AFTER FIRST DASH NUMBER INDICATES DRILLED HEAD (-3 THRU -6 SIZES ONLY). LETTER “P” FOLLOWING SECOND DASH NUMBER INDICATES CADMIUM PLATE (NAS1802 ONLY)