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Technical Data Sheet
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424893PC4 — BOLT,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

424893PC4: BOLT,MACHINE.

The BOLT,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 0.250 INCHES NOMINAL IN, head_height: 0.391 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.250 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-271-2275, 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
424893PC4
NSN: 5306-00-271-2275
FSC: 5306 — Bolts
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length0.250 INCHES NOMINAL IN
head_height0.391 INCHES NOMINAL IN
thread_class2A A
thread_length1.250 INCHES MAXIMUM IN
fastener_length1.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentZINC OVERALL
width_between_flats0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-271-2275
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 424893PC4 · 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: 0.391 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.500 INCHES NOMINAL IN
•
THREAD LENGTH: 1.250 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
FEATURES PROVIDED: FINISHED HEAD
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
GRIP LENGTH: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.391 INCHES NOMINAL IN
FASTENER LENGTH1.500 INCHES NOMINAL IN
THREAD LENGTH1.250 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.625 INCHES IN
FEATURES PROVIDEDFINISHED HEAD
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH0.250 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
NONDEFINITIVE SPEC/STD DATAB TYPE
SUBSTITUTES & CROSS-REFERENCES 1
MILB857Reference document
Same NSN cross-reference
Reference document — Identification reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 424893PC4?
424893PC4 is a BOLT,MACHINE.
What parts can replace 424893PC4?
There is 1 known substitute for 424893PC4: MILB857. Substitute compatibility should be verified for your specific system.
What is the NSN for 424893PC4?
424893PC4 is cataloged in the U.S. Government catalog under NSN 5306-00-271-2275. 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.