MIL-S-1222 and MIL-DTL-1222 Studs, Bolts, Nuts, and Screws
STUDS
TYPE I - FULL BODY
TYPE II - REDUCED
TYPE III - CONSTANT STRENGTH BODY
TYPE IV - CONTINUOUS THREAD
BOLTS
TYPE I - HEX
TYPE II - HEAVY HEX
TYPE III - HEAVY HEX STRUCTURAL
TYPE IV - ROUND HEAD
TYPE V - ROUND HEAD SQUARE NECK
NUTS
TYPE I - HEX
TYPE II - HEX JAM
TYPE III - HEAVY HEX
TYPE IV - HEAVY HEX JAM
TYPE V - HEX SLOTTED
STYLE A - WASHER FACED
STYLE B - DOUBLE CHAMFERED
SCREWS
TYPE I - HEX CAP (FINISHED HEX BOLT)
TYPE II - HEX SOCKET CAP
For marine environments (submarines and ships), structural applications, and high-shock, high-preload systems.
MIL-DTL-1222 covers a variety of materials, including: Nickel Alloys, Titanium, Aluminum, and Corrosion Resistant Steels (CRES).