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6509915 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6509915: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include hole_diameter: 0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN, outside_diameter: 0.750 INCHES NOMINAL IN, style_designator: RECESSED, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.125 INCHES NOMINAL IN, surface_treatment_document_and_classification: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-372-5766, 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
6509915
NSN: 5310-01-372-5766
FSC: 5310 — Nuts and Washers
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
hole_diameter0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
outside_diameter0.750 INCHES NOMINAL IN
style_designatorRECESSED
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.125 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-372-5766
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6509915 · 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: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL: STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
•
HOLE DIAMETER: 0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIALSTEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL
HOLE DIAMETER0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN
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
B48475Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 6509915?
6509915 is a WASHER,RECESSED.
What parts can replace 6509915?
There is 1 known substitute for 6509915: B48475. Substitute compatibility should be verified for your specific system.
What is the NSN for 6509915?
6509915 is cataloged in the U.S. Government catalog under NSN 5310-01-372-5766. 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.