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4002T66P10 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4002T66P10: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OVERALL, hole_diameter: 3.400 INCHES MINIMUM AND 3.420 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES ALL SURFACES, outside_diameter: 3.690 INCHES MINIMUM AND 3.710 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: PHOSPHATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-918-4677, 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
4002T66P10
NSN: 5310-00-918-4677
FSC: 5310 — Nuts and Washers
CAGE: 99207 — GENERAL ELECTRIC COMPANY DBA GE AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OVERALL
hole_diameter3.400 INCHES MINIMUM AND 3.420 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES ALL SURFACES
outside_diameter3.690 INCHES MINIMUM AND 3.710 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentPHOSPHATE OVERALL
material_thickness0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
external_key_quantity4
internal_key_quantity2
external_straight_key_width0.150 INCHES MINIMUM AND 0.170 INCHES MAXIMUM IN
internal_straight_key_width0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
overall_distance_including_keys3.980 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
NSN5310-00-918-4677
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4002T66P10 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 1.568 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: +16-TY5 CL 1,FSCM 99207 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
OVERALL DISTANCE INCLUDING KEYS: 3.980 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.690 INCHES MINIMUM AND 3.710 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES ALL SURFACES
INTERNAL STRAIGHT KEY WIDTH0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY1.568 INCHES MINIMUM AND 1.573 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION+16-TY5 CL 1,FSCM 99207 MFR REF SINGLE TREATMENT RESPONSE OVERALL
OVERALL DISTANCE INCLUDING KEYS3.980 INCHES MINIMUM AND 4.000 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.690 INCHES MINIMUM AND 3.710 INCHES MAXIMUM IN
MATERIAL THICKNESS0.046 INCHES MINIMUM AND 0.054 INCHES MAXIMUM IN
EXTERNAL STRAIGHT KEY WIDTH0.150 INCHES MINIMUM AND 0.170 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

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 4002T66P10?
4002T66P10 is a WASHER,KEY.
What is the NSN for 4002T66P10?
4002T66P10 is cataloged in the U.S. Government catalog under NSN 5310-00-918-4677. 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.