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9427997 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

9427997: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DISTORTED HEAD, head_height: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.500 INCHES NOMINAL IN, fastener_length: 5.900 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-251-4991, 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
9427997
NSN: 5306-01-251-4991
FSC: 5306 — Bolts
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDISTORTED HEAD
head_height0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
thread_class2A A
thread_length1.500 INCHES NOMINAL IN
fastener_length5.900 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
hardness_rating33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
locking_featureUNDERCUT BEARING SURFACE OF HEAD
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
supplementary_featuresMFR TYPE AA HEX. LOCK BOLT; U/O DETROIT DIESEL 149 ENGINE MARINE GEAR
NSN5306-01-251-4991
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 9427997 · 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: 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
•
FASTENER LENGTH: 5.900 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
•
THREAD LENGTH: 1.500 INCHES NOMINAL IN
•
SUPPLEMENTARY FEATURES: MFR TYPE AA HEX. LOCK BOLT; U/O DETROIT DIESEL 149 ENGINE MARINE GEAR
•
HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J429,GRADE 8 UNS G15410 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
FASTENER LENGTH5.900 INCHES MINIMUM AND 6.000 INCHES MAXIMUM IN
THREAD LENGTH1.500 INCHES NOMINAL IN
SUPPLEMENTARY FEATURESMFR TYPE AA HEX. LOCK BOLT; U/O DETROIT DIESEL 149 ENGINE MARINE GEAR
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J429,GRADE 8 UNS G15410 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEDISTORTED HEAD
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 2
5306PL0948534Reference document
Same NSN cross-reference
Reference document — Informative reference only
MIL-B-45912Reference document
Same NSN cross-reference
Reference document — Identification reference
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 9427997?
9427997 is a BOLT,MACHINE.
What parts can replace 9427997?
There are 2 known substitutes for 9427997: 5306PL0948534, MIL-B-45912. Substitute compatibility should be verified for your specific system.
What is the NSN for 9427997?
9427997 is cataloged in the U.S. Government catalog under NSN 5306-01-251-4991. 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.