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6512-61-123-6102 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

6512-61-123-6102: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, recess_depth: 0.029 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN, hole_diameter: 3.478 INCHES MINIMUM AND 3.488 INCHES MAXIMUM IN, overall_height: 0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, recess_diameter: 3.890 INCHES MINIMUM AND 3.900 INCHES MAXIMUM IN, outside_diameter: 4.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-124-1267, 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
6512-61-123-6102
NSN: 5310-01-124-1267
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
recess_depth0.029 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
hole_diameter3.478 INCHES MINIMUM AND 3.488 INCHES MAXIMUM IN
overall_height0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
recess_diameter3.890 INCHES MINIMUM AND 3.900 INCHES MAXIMUM IN
outside_diameter4.375 INCHES NOMINAL IN
style_designatorRECESSED
surface_treatmentANODIZE OVERALL
material_document_and_classificationQQ-A-250/11,TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8,TEMPER T6511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNAVY SPECIAL PROJECT
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-124-1267
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6512-61-123-6102 · 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: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: RECESSED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/11,TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8,TEMPER T6511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 4.375 INCHES NOMINAL IN
•
RECESS DEPTH: 0.029 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
•
RECESS DIAMETER: 3.890 INCHES MINIMUM AND 3.900 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ANODIZE OVERALL
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.120 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORRECESSED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/11,TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8,TEMPER T651 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8,TEMPER T6511 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER4.375 INCHES NOMINAL IN
RECESS DEPTH0.029 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN
RECESS DIAMETER3.890 INCHES MINIMUM AND 3.900 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
MATERIALALUMINUM ALLOY 6061 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

No substitute or cross-reference records for this part.

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 6512-61-123-6102?
6512-61-123-6102 is a WASHER,RECESSED.
What is the NSN for 6512-61-123-6102?
6512-61-123-6102 is cataloged in the U.S. Government catalog under NSN 5310-01-124-1267. 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.