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12270459 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12270459: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OR STEEL COMP 8640 OVERALL, head_style: HEXAGONHEXAGON, grip_length: 0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN, head_height: 0.378 INCHES MINIMUM AND 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM0.403 INCHES MAXIMUM IN, thread_class: 2A2A, thread_length: 1.440 INCHES MINIMUM AND 1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM1.560 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-139-6057, 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
12270459
NSN: 5306-01-139-6057
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OR STEEL COMP 8640 OVERALL
head_styleHEXAGONHEXAGON
grip_length0.250 INCHES NOMINAL0.250 INCHES NOMINAL IN
head_height0.378 INCHES MINIMUM AND 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM0.403 INCHES MAXIMUM IN
thread_class2A2A
thread_length1.440 INCHES MINIMUM AND 1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM1.560 INCHES MAXIMUM IN
fastener_length1.688 INCHES MINIMUM AND 1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM1.750 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HANDRIGHT-HAND
features_providedFINISHED HEADFINISHED HEAD
surface_treatmentPHOSPHATE OVERALLPHOSPHATE OVERALL
width_between_flats0.923 INCHES MINIMUM AND 0.923 INCHES MINIMUM AND 0.938 INCHES MAXIMUM0.938 INCHES MAXIMUM IN
NSN5306-01-139-6057
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12270459 · 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
•
HEAD HEIGHT: 0.378 INCHES MINIMUM AND 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM0.403 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.688 INCHES MINIMUM AND 1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM1.750 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-16232 TY M CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-P-16232 TY M CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.440 INCHES MINIMUM AND 1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM1.560 INCHES MAXIMUM IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OVERALLASTM A331 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.625 INCHES0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEADFINISHED HEAD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.378 INCHES MINIMUM AND 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM0.403 INCHES MAXIMUM IN
FASTENER LENGTH1.688 INCHES MINIMUM AND 1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM1.750 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232 TY M CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-P-16232 TY M CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.440 INCHES MINIMUM AND 1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM1.560 INCHES MAXIMUM IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A322 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OVERALLASTM A331 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.625 INCHES0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEADFINISHED HEAD
HEAD STYLEHEXAGONHEXAGON
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12270459?
12270459 is a BOLT,MACHINE.
What is the NSN for 12270459?
12270459 is cataloged in the U.S. Government catalog under NSN 5306-01-139-6057. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.