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AIC4356N3D1240 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

AIC4356N3D1240: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: HEXAGON, head_height: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.313 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-276-1604, 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
AIC4356N3D1240
NSN: 5306-01-276-1604
FSC: 5306 — Bolts
CAGE: 06725 — SPS TECHNOLOGIES, LLC DBA AIR INDUSTRIES COMPANY DIV AIR INDUSTRIES COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleHEXAGON
head_height0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
thread_class3A A
thread_length0.313 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
hardness_rating46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST SHOULDER IN
special_featuresSUPPLY WITH DRY FILM LUBRICANT PER MIL-L-46010 ON GRIP ONLY
thread_directionRIGHT-HAND
shoulder_diameter0.2445 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM FIRST SHOULDER IN
NSN5306-01-276-1604
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AIC4356N3D1240 · 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: 0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: NAS672 ASSN STD 1ST TREATMENT RESPONSE OR AMS2416 ASSN STD 2ND TREATMENT RESPONSE HEAD
•
SHOULDER DIAMETER: 0.2445 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.313 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM IN
FASTENER LENGTH1.553 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
SHOULDER LENGTH1.230 INCHES MINIMUM AND 1.250 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNAS672 ASSN STD 1ST TREATMENT RESPONSE OR AMS2416 ASSN STD 2ND TREATMENT RESPONSE HEAD
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNAS672 ASSN STD 1ST TREATMENT RESPONSE OR AMS2416 ASSN STD 2ND TREATMENT RESPONSE THREADS
SHOULDER DIAMETER0.2445 INCHES MINIMUM AND 0.2460 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.313 INCHES MINIMUM AND 0.333 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING46.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE 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 8
C4356N3D1240Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VS2986CR3-1240Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
PBF4356N3D1240Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5306PL1498844Reference document
Same NSN cross-reference
Reference document — Informative reference only
71657CD-3-1240Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VCB0008A3-1240Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 AIC4356N3D1240?
AIC4356N3D1240 is a BOLT,SHOULDER.
What parts can replace AIC4356N3D1240?
There are 8 known substitutes for AIC4356N3D1240: C4356N3D1240, VS2986CR3-1240, PBF4356N3D1240 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AIC4356N3D1240?
AIC4356N3D1240 is cataloged in the U.S. Government catalog under NSN 5306-01-276-1604. 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.