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Technical Data Sheet
PartsTable / COMPONENT / 181377
181377 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include end_item_identification: 2320-01-529-2251 TRUCK, BOMB, SERVICE, BUFFALO. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-018-1377, 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
181377
NSN: 5305-00-018-1377
FSC: 5305
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
end_item_identification2320-01-529-2251 TRUCK, BOMB, SERVICE, BUFFALO
NSN5305-00-018-1377
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 181377 · 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
•
THREAD QUANTITY PER INCH: 24
•
HEAD HEIGHT: 0.234 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE AND 5 GRADE
•
MINIMUM YIELD STRENGTH: 85000 POUNDS PER SQUARE INCH LBS
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH24
HEAD HEIGHT0.234 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORUNF
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE AND 5 GRADE
MINIMUM YIELD STRENGTH85000 POUNDS PER SQUARE INCH LBS
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.562 INCHES NOMINAL IN
FASTENER LENGTH1.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
S1614Interchangeable
interchangeable cross-reference
interchangeable
M276Interchangeable
interchangeable cross-reference
interchangeable
0S-1614Interchangeable
interchangeable cross-reference
interchangeable
D-833Interchangeable
interchangeable cross-reference
interchangeable
VE778Interchangeable
interchangeable cross-reference
interchangeable
EP34908Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 181377?
181377 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 181377?
There are 15 known substitutes for 181377: S1614, M276, 0S-1614 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 181377?
181377 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-018-1377. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026