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4214478 — BOLT,SQUARE NECK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

4214478: BOLT,SQUARE NECK.

The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: ROUND, neck_width: 0.388 INCHES NOMINAL IN, head_height: 0.203 INCHES NOMINAL IN, head_diameter: 0.844 INCHES NOMINAL IN, fastener_length: 1.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-662-7358, 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
4214478
NSN: 5306-01-662-7358
FSC: 5306 — Bolts
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleROUND
neck_width0.388 INCHES NOMINAL IN
head_height0.203 INCHES NOMINAL IN
head_diameter0.844 INCHES NOMINAL IN
fastener_length1.000 INCHES NOMINAL IN
special_featuresSTYLE: SQUARE NECK CARRIAGE BOLT;MATERIAL: STEEL GRADE 5 PER SAE J429;FINISH: YELLOW ZINC PLATING
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
end_item_identification4210-01-622-0440;TRUCK,FIRE FIGHTING
nominal_thread_diameter0.380 INCHES IN
thread_quantity_per_inch16
NSN5306-01-662-7358
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4214478 · 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: 0.203 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.000 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.380 INCHES IN
•
HEAD STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
NECK WIDTH: 0.388 INCHES NOMINAL IN
•
COLOR: YELLOW OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.203 INCHES NOMINAL IN
FASTENER LENGTH1.000 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.380 INCHES IN
HEAD STYLEROUND
THREAD DIRECTIONRIGHT-HAND
NECK WIDTH0.388 INCHES NOMINAL IN
COLORYELLOW OVERALL
SPECIAL FEATURESSTYLE: SQUARE NECK CARRIAGE BOLT;MATERIAL: STEEL GRADE 5 PER SAE J429;FINISH: YELLOW ZINC PLATING
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYSCR,CRG
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

No substitute or cross-reference records for this part.

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 4214478?
4214478 is a BOLT,SQUARE NECK.
What is the NSN for 4214478?
4214478 is cataloged in the U.S. Government catalog under NSN 5306-01-662-7358. 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.