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81003 — 81003

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

81003: 81003.

The 81003 is a the manufacturer industrial component. Key specifications include end_item_identification: MV-22 AIRCRAFT (V-22 LRIP 1 E-NSN ISIL), criticality_code_justification: AGAV. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-579-0053, 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
MRO→ MRO_GENERAL→ 81003
NSN: 5310-00-579-0053
NIINs: 005790053, 006580232, 012893341, 013474033, 014848937
FSC: 5310 — Nuts and Washers
CAGE: 73734 — FEDERAL SCREW PRODUCTS, INC. (USA)
SPECIFICATIONS
end_item_identificationMV-22 AIRCRAFT (V-22 LRIP 1 E-NSN ISIL)
criticality_code_justificationAGAV
NSN5310-00-579-0053
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 81003 · 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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LUBRICATION: SOLUBLE LUBRICANT
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WIDTH ACROSS FLATS: 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
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SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
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THREAD SERIES: UNJC
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TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
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NUT COUNTERBORE DEPTH: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM NUT IN
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THREAD DIRECTION: RIGHT-HAND
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NOMINAL THREAD SIZE: 0.112 INCHES IN
TECHNICAL CHARACTERISTICS
LUBRICATIONSOLUBLE LUBRICANT
WIDTH ACROSS FLATS0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNJC
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
NUT COUNTERBORE DEPTH0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM NUT IN
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.112 INCHES IN
COUNTERBORE DIAMETER0.139 INCHES MINIMUM AND 0.144 INCHES MAXIMUM NUT IN
PILOT DIAMETER0.187 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 81003?
81003 is a 81003. It is classified as a MRO (MRO_GENERAL).
What is the NSN for 81003?
81003 is cataloged in the U.S. Government catalog under NSN 5310-00-579-0053. 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.