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12277330 — BOLT,U

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

12277330: BOLT,U.

The BOLT,U is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1040 OR STEEL COMP 1042 OR STEEL COMP 1043 OR STEEL COMP 1045 OVERALL, thread_class: 2A A, thread_length: 1.000 INCHES NOMINAL IN, style_designator: ROUND BEND, thread_direction: RIGHT-HAND, surface_treatment: ZINC AND CHROMATE OR CADMIUM AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-165-3272, 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
12277330
NSN: 5306-01-165-3272
FSC: 5306 — Bolts
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1040 OR STEEL COMP 1042 OR STEEL COMP 1043 OR STEEL COMP 1045 OVERALL
thread_class2A A
thread_length1.000 INCHES NOMINAL IN
style_designatorROUND BEND
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OR CADMIUM AND CHROMATE OVERALL
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch20
thread_series_designatorUNF
inside_distance_between_shanks1.560 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
material_document_and_classificationASTM A576 ASSN STD ALL MATERIAL RESPONSES OR ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-Z-325 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416 TY 2 CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
NSN5306-01-165-3272
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 12277330 · 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
•
INSIDE DISTANCE BETWEEN SHANKS: 1.560 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416 TY 2 CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.000 INCHES NOMINAL IN
•
DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END: 3.295 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND BEND
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A576 ASSN STD ALL MATERIAL RESPONSES OR ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
INSIDE DISTANCE BETWEEN SHANKS1.560 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325 TY 2 CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416 TY 2 CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
THREAD LENGTH1.000 INCHES NOMINAL IN
DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END3.295 INCHES NOMINAL IN
STYLE DESIGNATORROUND BEND
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A576 ASSN STD ALL MATERIAL RESPONSES OR ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTZINC AND CHROMATE OR CADMIUM AND CHROMATE OVERALL
THREAD CLASS2A A
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 12277330?
12277330 is a BOLT,U.
What is the NSN for 12277330?
12277330 is cataloged in the U.S. Government catalog under NSN 5306-01-165-3272. 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.