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PartsTable / COMPONENT / MIL-DTL-1222 TY 1 GR 5
MIL-DTL-1222 TY 1 GR 5 ✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 1.018 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN, fastener_length: 1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-270-9438, 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 1 GR 5
NSN: 5306-00-270-9438
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_height0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM IN
thread_class3A A
thread_length1.018 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN
fastener_length1.210 INCHES MINIMUM AND 1.270 INCHES MAXIMUM IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
minimum_yield_strength90000 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.500 INCHES IN
NSN5306-00-270-9438
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-DTL-1222 TY 1 GR 5 · 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: 0.438 INCHES IN
•
THREAD QUANTITY PER INCH: 14
•
HEAD HEIGHT: 0.281 INCHES NOMINAL IN
•
MINIMUM TENSILE STRENGTH: 120000 POUNDS PER SQUARE INCH LBS
•
THREAD CLASS: 2A A
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD LENGTH: 1.250 INCHES MINIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.438 INCHES IN
THREAD QUANTITY PER INCH14
HEAD HEIGHT0.281 INCHES NOMINAL IN
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH LBS
THREAD CLASS2A A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH1.250 INCHES MINIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FEATURES PROVIDEDFINISHED HEAD
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
FFB571TYPEA7Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222/TY1GR5Interchangeable
interchangeable cross-reference
interchangeable
5361662 ITEM 34Interchangeable
interchangeable cross-reference
interchangeable
FF-S-85 TY 2 ST 10P GR 2Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 TY 1 GR 5Interchangeable
interchangeable cross-reference
interchangeable
M1222B2X7C272GFNNInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-1222 TY 1 GR 5?
MIL-DTL-1222 TY 1 GR 5 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace MIL-DTL-1222 TY 1 GR 5?
There are 6 known substitutes for MIL-DTL-1222 TY 1 GR 5: FFB571TYPEA7, MIL-DTL-1222/TY1GR5, 5361662 ITEM 34 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-1222 TY 1 GR 5?
MIL-DTL-1222 TY 1 GR 5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-270-9438. 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