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483138 — WASHER,FLAT

✓ Government record, cited
Legrand · NUT WASHER
PRODUCT OVERVIEW

483138: WASHER,FLAT.

The WASHER,FLAT is a Legrand industrial component. Key specifications include material: COBALT ALLOY OVERALL, thickness: 0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN, hole_diameter: 0.529 INCHES MINIMUM AND 0.533 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES BOTTOM, overall_diameter: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN, surface_treatment: NICKEL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-010-4635, 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
483138
NSN: 5310-00-010-4635
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialCOBALT ALLOY OVERALL
thickness0.029 INCHES MINIMUM AND 0.031 INCHES MAXIMUM IN
hole_diameter0.529 INCHES MINIMUM AND 0.533 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES BOTTOM
overall_diameter0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
surface_treatmentNICKEL OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationW/S:AIRCRAFT, HORNET F/A-18; AIRCRAFT, STRATOFORTRESS B-52; ENGINE, AIRCRAFT TF33-PW-102 (C-135E, EC-135H/K/P); ENGINE, AIRCRAFT TF33-P-3/5/9 (C/EC-135, B-52H)
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationPWA1037 FSCM 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-N-290 FED SPEC 1ST TREATMENT RESPONSE OVERALL
NSN5310-00-010-4635
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 483138 · Legrand ⚠ 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
•
SURFACE FINISH: 63.0 MICROINCHES BOTTOM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-N-290 FED SPEC 1ST TREATMENT RESPONSE OVERALL
•
OVERALL DIAMETER: 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: PWA1037 FSCM 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: NICKEL OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES BOTTOM
SURFACE FINISH63.0 MICROINCHES TOP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-N-290 FED SPEC 1ST TREATMENT RESPONSE OVERALL
OVERALL DIAMETER0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONPWA1037 FSCM 77445 MFR REF SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTNICKEL OVERALL
PERIPHERAL SHAPE STYLEROUND
END ITEM IDENTIFICATIONW/S:AIRCRAFT, HORNET F/A-18; AIRCRAFT, STRATOFORTRESS B-52; ENGINE, AIRCRAFT TF33-PW-102 (C-135E, EC-135H/K/P); ENGINE, AIRCRAFT TF33-P-3/5/9 (C/EC-135, B-52H)
MATERIALCOBALT ALLOY OVERALL
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 1
00354Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 483138?
483138 is a WASHER,FLAT manufactured by Legrand.
What parts can replace 483138?
There is 1 known substitute for 483138: 00354. Substitute compatibility should be verified for your specific system.
What is the NSN for 483138?
483138 is cataloged in the U.S. Government catalog under NSN 5310-00-010-4635. 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.