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P12615956N — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

P12615956N: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, grip_length: 1.210 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN, head_height: 1.054 INCHES MINIMUM AND 1.196 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 3.930 INCHES MINIMUM AND 3.970 INCHES MAXIMUM IN, fastener_length: 4.780 INCHES MINIMUM AND 5.220 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-185-2031, 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
P12615956N
NSN: 5306-01-185-2031
FSC: 5306 — Bolts
CAGE: 82796 — COLTEC INDUSTRIES INC. DBA FAIRBANKS MORSE ENGINE DIV FAIRBANKS MORSE ENGINE (USA)
SPECIFICATIONS
head_styleHEXAGON
grip_length1.210 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN
head_height1.054 INCHES MINIMUM AND 1.196 INCHES MAXIMUM IN
thread_class2A A
thread_length3.930 INCHES MINIMUM AND 3.970 INCHES MAXIMUM IN
fastener_length4.780 INCHES MINIMUM AND 5.220 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats2.538 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN
nominal_thread_diameter1.375 INCHES IN
thread_quantity_per_inch5
NSN5306-01-185-2031
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: P12615956N · 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: 1.054 INCHES MINIMUM AND 1.196 INCHES MAXIMUM IN
•
FASTENER LENGTH: 4.780 INCHES MINIMUM AND 5.220 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 3.930 INCHES MINIMUM AND 3.970 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 1.375 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT1.054 INCHES MINIMUM AND 1.196 INCHES MAXIMUM IN
FASTENER LENGTH4.780 INCHES MINIMUM AND 5.220 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONASTM B633 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH3.930 INCHES MINIMUM AND 3.970 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER1.375 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.210 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS2.538 INCHES MINIMUM AND 2.625 INCHES MAXIMUM IN
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 2
81344293NReference document
Same NSN cross-reference
Reference document — Design control — primary reference
81344293Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is P12615956N?
P12615956N is a BOLT,MACHINE.
What parts can replace P12615956N?
There are 2 known substitutes for P12615956N: 81344293N, 81344293. Substitute compatibility should be verified for your specific system.
What is the NSN for P12615956N?
P12615956N is cataloged in the U.S. Government catalog under NSN 5306-01-185-2031. 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.