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Technical Data Sheet
PartsTable / COMPONENT / 3281203
3281203 ✓ 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 FLYWHEEL,ENGINE is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: FLYWHEEL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-181-3485, 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
3281203
NSN: 5306-01-181-3485
FSC: 5306
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyFLYWHEEL
NSN5306-01-181-3485
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3281203 · 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
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
MINIMUM TENSILE STRENGTH: 125000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL COMP 316 OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 316 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD QUANTITY PER INCH: 18
•
HEAD LENGTH: 0.780 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN
•
THREAD LENGTH: 3.000 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.312 INCHES IN
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL COMP 316 OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 316 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD QUANTITY PER INCH18
HEAD LENGTH0.780 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN
THREAD LENGTH3.000 INCHES NOMINAL IN
TEE BOLT CYLINDRICAL HEAD DIAMETER0.307 INCHES MINIMUM AND 0.317 INCHES MAXIMUM IN
FASTENER LENGTH4.344 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
3281203Interchangeable
interchangeable cross-reference
interchangeable
90683Interchangeable
interchangeable cross-reference
interchangeable
3535859C1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3281203?
3281203 is a FLYWHEEL,ENGINE.
What parts can replace 3281203?
There are 3 known substitutes for 3281203: 3281203, 90683, 3535859C1. Substitute compatibility should be verified for your specific system.
What is the NSN for 3281203?
3281203 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-181-3485. 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