PartsTable
Technical Data Sheet
MIL-DTL-1222 ✓ 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,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL NUT, nut_style: HEXAGON, head_style: FLAT CHAMFER, nut_height: 0.464 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN, head_height: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN, thread_class: 3B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-018-0084, 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
NSN: 5306-00-018-0084
FSC: 5306
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL NUT
nut_styleHEXAGON
head_styleFLAT CHAMFER
nut_height0.464 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
head_height0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
thread_class3B
chamfer_angle30.0 DEGREES MINIMUM AND 45.0 DEGREES MAXIMUM
head_diameter1.107 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
thread_length1.750 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
fastener_length6.000 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM
NSN5306-00-018-0084
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-DTL-1222 · 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
WIDTH BETWEEN FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
HEAD STYLE: HEXAGON
THREAD CLASS: 2A A
THREAD QUANTITY PER INCH: 18
HEAD HEIGHT: 0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT: CADMIUM AND CHROMATE OR ZINC OVERALL
MINIMUM TENSILE STRENGTH: 120000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
THREAD CLASS2A A
THREAD QUANTITY PER INCH18
HEAD HEIGHT0.195 INCHES MINIMUM AND 0.211 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OR ZINC OVERALL
MINIMUM TENSILE STRENGTH120000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL COMP 1050 OR STEEL COMP 1053 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
M1222RN12C48GFNNUpgraded Successor
successor cross-reference
successor
MIL-S-1222Upgraded Successor
successor cross-reference
successor
MIL-DTL-1222Upgraded Successor
successor cross-reference
successor
306-40172Upgraded Successor
successor cross-reference
successor
1D4703Upgraded Successor
successor cross-reference
successor
M1222RN14C260GCNZEUpgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-1222?
MIL-DTL-1222 is a SCREW,CAP,SOCKET HEAD.
What parts can replace MIL-DTL-1222?
There are 13 known substitutes for MIL-DTL-1222: M1222RN12C48GFNN, MIL-S-1222, MIL-DTL-1222 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-1222?
MIL-DTL-1222 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-018-0084. This indicates validated use in U.S. government and defense supply chains.
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