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Technical Data Sheet
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181737 — 181737

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

181737: 181737.

The 181737 is a the manufacturer industrial component. Key specifications include specification/standard_data: 91224-1817-37 MANUFACTURERS STANDARD, medical_designation_and_grade: REAGENT. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-282-0477, 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
181737
NSN: 5305-00-282-0477
NIINs: 002820477, 009009500, 011577540, 013541754
FSC: 5305 — Screws
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
specification/standard_data91224-1817-37 MANUFACTURERS STANDARD
medical_designation_and_gradeREAGENT
NSN5305-00-282-0477
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 181737 · 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: 0.359 INCHES NOMINAL IN
•
FASTENER LENGTH: 3.250 INCHES NOMINAL IN
•
THREAD LENGTH: 1.375 INCHES MINIMUM IN
•
HARDNESS RATING: 25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.812 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.359 INCHES NOMINAL IN
FASTENER LENGTH3.250 INCHES NOMINAL IN
THREAD LENGTH1.375 INCHES MINIMUM IN
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL
NOMINAL THREAD DIAMETER0.562 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.812 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAII TYPE AND 10P STYLE AND 5 GRADE
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 181737?
181737 is a 181737.
What is the NSN for 181737?
181737 is cataloged in the U.S. Government catalog under NSN 5305-00-282-0477. 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.