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140-007-81-64F6 — WASHER,RECESSED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

140-007-81-64F6: WASHER,RECESSED.

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, hole_diameter: 1.256 INCHES MINIMUM AND 1.276 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES ALL SURFACES, outside_diameter: 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN, style_designator: RECESSED BOTH SIDES, top_recess_angle: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-903-4860, 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
140-007-81-64F6
NSN: 5310-00-903-4860
FSC: 5310 — Nuts and Washers
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
hole_diameter1.256 INCHES MINIMUM AND 1.276 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES ALL SURFACES
outside_diameter1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN
style_designatorRECESSED BOTH SIDES
top_recess_angle89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
bottom_recess_angle89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
top_recess_diameter1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN
bottom_recess_diameter1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN
surface_treatment_document_and_classificationMIL-C-8837,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-903-4860
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 140-007-81-64F6 · 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 FINISH: 63.0 MICROINCHES ALL SURFACES
•
TOP RECESS DIAMETER: 1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-8837,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
BOTTOM RECESS DIAMETER: 1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN
•
TOP RECESS ANGLE: 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
•
STYLE DESIGNATOR: RECESSED BOTH SIDES
•
OUTSIDE DIAMETER: 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
TOP RECESS DIAMETER1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-8837,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
BOTTOM RECESS DIAMETER1.416 INCHES MINIMUM AND 1.426 INCHES MAXIMUM IN
TOP RECESS ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
STYLE DESIGNATORRECESSED BOTH SIDES
OUTSIDE DIAMETER1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM IN
MATERIAL THICKNESS0.183 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN
BOTTOM RECESS ANGLE89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM
SURFACE TREATMENTCADMIUM AND CHROMATE 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 140-007-81-64F6?
140-007-81-64F6 is a WASHER,RECESSED.
What is the NSN for 140-007-81-64F6?
140-007-81-64F6 is cataloged in the U.S. Government catalog under NSN 5310-00-903-4860. 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.