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PartsTable / COMPONENT / M1222RN8C256GCNZE
M1222RN8C256GCNZE ✓ 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: 0.312 INCHES NOMINAL IN, thread_class: 2A A, fastener_length: 3.500 INCHES NOMINAL IN, hardness_rating: 80.0 ROCKWELL B MINIMUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-174-9470, 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
M1222RN8C256GCNZE
NSN: 5306-00-174-9470
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_height0.312 INCHES NOMINAL IN
thread_class2A A
fastener_length3.500 INCHES NOMINAL IN
hardness_rating80.0 ROCKWELL B MINIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats0.750 INCHES NOMINAL IN
nominal_thread_diameter0.500 INCHES IN
minimum_tensile_strength75000 POUNDS PER SQUARE INCH LBS
thread_quantity_per_inch13
NSN5306-00-174-9470
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M1222RN8C256GCNZE · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633, TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SURFACE TREATMENT: ZINC OVERALL
•
THREAD QUANTITY PER INCH: 13
•
WIDTH BETWEEN FLATS: 0.750 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.312 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633, TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENTZINC OVERALL
THREAD QUANTITY PER INCH13
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
HEAD HEIGHT0.312 INCHES NOMINAL IN
THREAD CLASS2A A
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
FASTENER LENGTH3.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
AN10H20AUpgraded Successor
successor cross-reference
successor
MIL-DTL-1222JUpgraded Successor
successor cross-reference
successor
MILB857AUpgraded Successor
successor cross-reference
successor
T857Upgraded Successor
successor cross-reference
successor
MILS1222Upgraded Successor
successor cross-reference
successor
2A-4639Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M1222RN8C256GCNZE?
M1222RN8C256GCNZE is a BOLT,MACHINE.
What parts can replace M1222RN8C256GCNZE?
There are 18 known substitutes for M1222RN8C256GCNZE: AN10H20A, MIL-DTL-1222J, MILB857A and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M1222RN8C256GCNZE?
M1222RN8C256GCNZE is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-174-9470. 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