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4025915 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4025915: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024 OVERALL, recess_depth: 0.104 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN, hole_diameter: 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN, heat_treatment: T-4 SOLUTION HEAT TREATED, NATURAL AGED, overall_height: 0.138 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN, outside_diameter: 0.809 INCHES MINIMUM AND 0.811 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-209-1695, 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
4025915
NSN: 5310-00-209-1695
FSC: 5310 — Nuts and Washers
CAGE: 7EK50 — TEXTRON AVIATION INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
recess_depth0.104 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
hole_diameter0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
heat_treatmentT-4 SOLUTION HEAT TREATED, NATURAL AGED
overall_height0.138 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
outside_diameter0.809 INCHES MINIMUM AND 0.811 INCHES MAXIMUM IN
style_designatorRECESSED
surface_treatmentANODIZE OVERALL
material_thickness0.0255 INCHES NOMINAL IN
material_document_and_classificationQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationS-137 F4-1 FSCM 71379 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-209-1695
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4025915 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: S-137 F4-1 FSCM 71379 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
HEAT TREATMENT: T-4 SOLUTION HEAT TREATED, NATURAL AGED
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.809 INCHES MINIMUM AND 0.811 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.104 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.0255 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.138 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONS-137 F4-1 FSCM 71379 MFR REF SINGLE TREATMENT RESPONSE OVERALL
HEAT TREATMENTT-4 SOLUTION HEAT TREATED, NATURAL AGED
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.809 INCHES MINIMUM AND 0.811 INCHES MAXIMUM IN
RECESS DEPTH0.104 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN
MATERIAL THICKNESS0.0255 INCHES NOMINAL IN
SURFACE TREATMENTANODIZE OVERALL
MATERIALALUMINUM ALLOY 2024 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
1N775KReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 4025915?
4025915 is a WASHER,RECESSED.
What parts can replace 4025915?
There is 1 known substitute for 4025915: 1N775K. Substitute compatibility should be verified for your specific system.
What is the NSN for 4025915?
4025915 is cataloged in the U.S. Government catalog under NSN 5310-00-209-1695. 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.