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23-12127-300 — BOLT,SQUARE NECK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

23-12127-300: BOLT,SQUARE NECK.

The BOLT,SQUARE NECK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: ROUND, head_height: 0.156 INCHES MINIMUM IN, head_diameter: 0.688 INCHES MINIMUM IN, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-528-5571, 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
23-12127-300
NSN: 5306-01-528-5571
FSC: 5306 — Bolts
CAGE: 64678 — DAIMLER TRUCK NORTH AMERICA LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleROUND
head_height0.156 INCHES MINIMUM IN
head_diameter0.688 INCHES MINIMUM IN
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
end_item_identificationNSN: 2320-01-458-1207
part_name_assigned_by_controlling_agencyBOLT - ROUND HEAD SQUARE NECK, FULL THREAD
NSN5306-01-528-5571
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 23-12127-300 · 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: 0.156 INCHES MINIMUM IN
•
HEAD STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HEAD DIAMETER: 0.688 INCHES MINIMUM IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.156 INCHES MINIMUM IN
HEAD STYLEROUND
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT - ROUND HEAD SQUARE NECK, FULL THREAD
END ITEM IDENTIFICATIONNSN: 2320-01-458-1207
MATERIALSTEEL OVERALL
HEAD DIAMETER0.688 INCHES MINIMUM 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

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 23-12127-300?
23-12127-300 is a BOLT,SQUARE NECK.
What is the NSN for 23-12127-300?
23-12127-300 is cataloged in the U.S. Government catalog under NSN 5306-01-528-5571. 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.