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PartsTable / COMPONENT / MIL-S-1222G TY1
MIL-S-1222G TY1 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The NUT,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, head_style: HEXAGON, nut_height: 0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN, head_height: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN, thread_class: 2B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-244-6543, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MIL-S-1222G TY1
NSN: 5305-01-244-6543
FSC: 5305
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
head_styleHEXAGON
nut_height0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN
head_height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
thread_class2B
thread_length2.500 INCHES NOMINAL IN
thread_seriesUNF
fastener_length2.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_across_flats0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
NSN5305-01-244-6543
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-S-1222G TY1 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL THREAD DIAMETER: 0.750 INCHES IN
•
HEAD STYLE: HEXAGON
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS.
•
THREAD CLASS: 2A A
•
HEAD HEIGHT: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.750 INCHES IN
HEAD STYLEHEXAGON
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS.
THREAD CLASS2A A
HEAD HEIGHT0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH10
WIDTH BETWEEN FLATS1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
216-4363288MT-F44Interchangeable
interchangeable cross-reference
interchangeable
1/2-13UNC-2BInterchangeable
interchangeable cross-reference
interchangeable
216-4363322 F34-6Interchangeable
interchangeable cross-reference
interchangeable
153-003-E-070 ITEM 43Interchangeable
interchangeable cross-reference
interchangeable
MIL-S-1222G TY1Interchangeable
interchangeable cross-reference
interchangeable
214-4363019ITEM27Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-S-1222G TY1?
MIL-S-1222G TY1 is a NUT,PLAIN,HEXAGON.
What parts can replace MIL-S-1222G TY1?
There are 26 known substitutes for MIL-S-1222G TY1: 216-4363288MT-F44, 1/2-13UNC-2B, 216-4363322 F34-6 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-S-1222G TY1?
MIL-S-1222G TY1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-244-6543. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026