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6643028PC42 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

6643028PC42: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 1.000 INCHES NOMINAL IN, head_height: 0.391 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-395-4262, 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
6643028PC42
NSN: 5306-00-395-4262
FSC: 5306 — Bolts
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length1.000 INCHES NOMINAL IN
head_height0.391 INCHES NOMINAL IN
thread_class2A A
thread_length1.500 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES BEARING SURFACE OF HEAD
fastener_length2.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats1.031 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-395-4262
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 6643028PC42 · 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
•
SURFACE FINISH: 63.0 MICROINCHES BEARING SURFACE OF HEAD
•
HEAD HEIGHT: 0.391 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.500 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: C50A-400-GR B7 FSCM 01289 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BEARING SURFACE OF HEAD
HEAD HEIGHT0.391 INCHES NOMINAL IN
FASTENER LENGTH2.500 INCHES NOMINAL IN
THREAD LENGTH1.500 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONC50A-400-GR B7 FSCM 01289 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH1.000 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
MIL-DTL-1222Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-S-1222Reference 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 6643028PC42?
6643028PC42 is a BOLT,MACHINE.
What parts can replace 6643028PC42?
There are 2 known substitutes for 6643028PC42: MIL-DTL-1222, MIL-S-1222. Substitute compatibility should be verified for your specific system.
What is the NSN for 6643028PC42?
6643028PC42 is cataloged in the U.S. Government catalog under NSN 5306-00-395-4262. 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.