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J142P03A — NUT,SELF-LOCKING,EXTENDED WASHER

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

J142P03A: NUT,SELF-LOCKING,EXTENDED WASHER.

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: DOUBLE HEXAGON, temp_rating: 1200.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3BG, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF), overall_height: 0.340 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-998-8382, 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
J142P03A
NSN: 5310-00-998-8382
FSC: 5310 — Nuts and Washers
CAGE: 07482 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
nut_styleDOUBLE HEXAGON
temp_rating1200.0 FAHRENHEIT NOMINAL DEGF
thread_class3BG
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.340 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
washer_thickness0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
precious_materialSILVER
surface_treatmentSILVER OVERALL
width_across_flats0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NSN5310-00-998-8382
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: J142P03A · 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
•
WASHER OUTSIDE DIAMETER: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
PRECIOUS MATERIAL: SILVER
•
TEMP RATING: 1200.0 FAHRENHEIT NOMINAL DEGF
•
WASHER THICKNESS: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.340 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
PRECIOUS MATERIALSILVER
TEMP RATING1200.0 FAHRENHEIT NOMINAL DEGF
WASHER THICKNESS0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.190 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 4
Z8417-02KReference document
Same NSN cross-reference
Reference document — Secondary reference
J142Reference document
Same NSN cross-reference
Reference document — Secondary reference
J142P03CSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
J142P03Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is J142P03A?
J142P03A is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace J142P03A?
There are 4 known substitutes for J142P03A: Z8417-02K, J142, J142P03C and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J142P03A?
J142P03A is cataloged in the U.S. Government catalog under NSN 5310-00-998-8382. This indicates validated use in U.S. government and defense supply chains.
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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.