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6510-31-152-7101 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6510-31-152-7101: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OR STEEL COMP E4340 OVERALL, recess_angle: 90.0 DEGREES NOMINAL, hole_diameter: 0.631 INCHES MINIMUM AND 0.643 INCHES MAXIMUM IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM, recess_diameter: 0.775 INCHES NOMINAL IN, outside_diameter: 1.062 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-146-9911, 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
6510-31-152-7101
NSN: 5310-01-146-9911
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP E4340 OVERALL
recess_angle90.0 DEGREES NOMINAL
hole_diameter0.631 INCHES MINIMUM AND 0.643 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
recess_diameter0.775 INCHES NOMINAL IN
outside_diameter1.062 INCHES NOMINAL IN
special_featuresOUTSIDE TAB WITH LENGTH 0.719 IN. AND WIRE HOLE DIA 0.204 IN. IN
style_designatorRECESSED
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
minimum_tensile_strength125000 POUNDS PER SQUARE INCH LBS
material_document_and_classificationMIL-S-18729,COND ANNEALED MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000,COND ANNEALED MIL SPEC 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-146-9911
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6510-31-152-7101 · 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,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-18729,COND ANNEALED MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000,COND ANNEALED MIL SPEC 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.062 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
•
RECESS DIAMETER: 0.775 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-18729,COND ANNEALED MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000,COND ANNEALED MIL SPEC 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.062 INCHES NOMINAL IN
MATERIAL THICKNESS0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
RECESS DIAMETER0.775 INCHES NOMINAL IN
SPECIAL FEATURESOUTSIDE TAB WITH LENGTH 0.719 IN. AND WIRE HOLE DIA 0.204 IN. IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MINIMUM TENSILE STRENGTH125000 POUNDS PER SQUARE INCH LBS
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6510-31-152-7101?
6510-31-152-7101 is a WASHER,RECESSED.
What is the NSN for 6510-31-152-7101?
6510-31-152-7101 is cataloged in the U.S. Government catalog under NSN 5310-01-146-9911. 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.