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MIL-DTL-1222, TY-I,GR-5 HEX HEAD — Technical Data Sheet

✓ 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 BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.000 INCHES MINIMUM IN, fastener_length: 5.400 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5306-01-282-7489, 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-DTL-1222, TY-I,GR-5 HEX HEAD
NSN: 5306-01-282-7489
FSC: 5306
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
thread_class2A A
thread_length1.000 INCHES MINIMUM IN
fastener_length5.400 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
minimum_tensile_strength120000 POUNDS PER SQUARE INCH LBS
NSN5306-01-282-7489
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-DTL-1222, TY-I,GR-5 HEX HEAD · 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
•
MINIMUM TENSILE STRENGTH: 120000 POUNDS PER SQUARE INCH LBS
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
THREAD CLASS: 2A A
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 5.400 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD QUANTITY PER INCH: 16
•
HEAD HEIGHT: 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD CLASS2A A
HEAD STYLEHEXAGON
FASTENER LENGTH5.400 INCHES MINIMUM AND 5.500 INCHES MAXIMUM IN
FEATURES PROVIDEDFINISHED HEAD
THREAD QUANTITY PER INCH16
HEAD HEIGHT0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429 GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
AN10H20AUpgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
MIL-DTL-1222JUpgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
180084Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
MIL-S-1222Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
MIL-DTL-1222Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
PC186649Upgraded SuccessorGOVERNMENT REGISTRY
successor cross-reference
successor
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-1222, TY-I,GR-5 HEX HEAD?
MIL-DTL-1222, TY-I,GR-5 HEX HEAD is a BOLT,MACHINE.
What parts can replace MIL-DTL-1222, TY-I,GR-5 HEX HEAD?
There are 23 known substitutes for MIL-DTL-1222, TY-I,GR-5 HEX HEAD: AN10H20A, MIL-DTL-1222J, 180084 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-1222, TY-I,GR-5 HEX HEAD?
MIL-DTL-1222, TY-I,GR-5 HEX HEAD is cataloged in the Federal Logistics Information System under NSN 5306-01-282-7489. 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: October 2026