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S6135-20666-001 — NUT,MAIN GEAR BOX

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

S6135-20666-001: NUT,MAIN GEAR BOX.

The NUT,MAIN GEAR BOX is a the manufacturer industrial component. Key specifications include general_characteristics_item_description: STEEL,6.250 IN. MIN,6.375 IN.

MAX INSIDE DIA,6.620 IN. MIN,6.630 IN. MAX OUTSIDE DIA,0.875 IN.

THK IN. This part is cataloged in the U.S. Government catalog under NSN 5310-00-593-1407, 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
S6135-20666-001
NSN: 5310-00-593-1407
FSC: 5310 — Nuts and Washers
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
general_characteristics_item_descriptionSTEEL,6.250 IN. MIN,6.375 IN. MAX INSIDE DIA,6.620 IN. MIN,6.630 IN. MAX OUTSIDE DIA,0.875 IN. THK IN
NSN5310-00-593-1407
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: S6135-20666-001 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,6.250 IN. MIN,6.375 IN. MAX INSIDE DIA,6.620 IN. MIN,6.630 IN. MAX OUTSIDE DIA,0.875 IN. THK IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,6.250 IN. MIN,6.375 IN. MAX INSIDE DIA,6.620 IN. MIN,6.630 IN. MAX OUTSIDE DIA,0.875 IN. THK 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is S6135-20666-001?
S6135-20666-001 is a NUT,MAIN GEAR BOX.
What is the NSN for S6135-20666-001?
S6135-20666-001 is cataloged in the U.S. Government catalog under NSN 5310-00-593-1407. 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.