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581547 — FLYWHEEL,ENGINE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

581547: FLYWHEEL,ENGINE.

The FLYWHEEL,ENGINE is a the manufacturer industrial component. Key specifications include end_item_identification: OUTBOARD GASOLINE ENG 1977, nonsupply_items_and_quantities: W/RING GEAR. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-139-6803, 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
581547
NSN: 5315-00-139-6803
NIINs: 001396803, 013667249
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
end_item_identificationOUTBOARD GASOLINE ENG 1977
nonsupply_items_and_quantitiesW/RING GEAR
NSN5315-00-139-6803
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 581547 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
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SURFACE FINISH: 32.0 MICROINCHES OUTSIDE DIAMETER
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FIRST END STYLE: RADIUS
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HARDNESS RATING: 32.0 ROCKWELL C NOMINAL OVERALL
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MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5667 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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PIN OVERALL DIAMETER: 0.24975 INCHES MINIMUM AND 0.25025 INCHES MAXIMUM IN
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PIN OVERALL LENGTH: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
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SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
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MATERIAL: NICKEL ALLOY X-750 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES OUTSIDE DIAMETER
FIRST END STYLERADIUS
HARDNESS RATING32.0 ROCKWELL C NOMINAL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5667 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
PIN OVERALL DIAMETER0.24975 INCHES MINIMUM AND 0.25025 INCHES MAXIMUM IN
PIN OVERALL LENGTH0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALNICKEL ALLOY X-750 OVERALL
FIRST END CORNER RADIUS0.020 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
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 581547?
581547 is a FLYWHEEL,ENGINE.
What is the NSN for 581547?
581547 is cataloged in the U.S. Government catalog under NSN 5315-00-139-6803. 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.