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7435-66C — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7435-66C: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.125 INCHES NOMINAL IN, heat_treatment: AS FABRICATED, outside_diameter: 2.125 INCHES NOMINAL IN, style_designator: KEY, surface_treatment: PHOSPHATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-541-1097, 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
7435-66C
NSN: 5310-00-541-1097
FSC: 5310 — Nuts and Washers
CAGE: 52793 — SAGINAW PRODUCTS CORPORATION DBA CIGNYS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.125 INCHES NOMINAL IN
heat_treatmentAS FABRICATED
outside_diameter2.125 INCHES NOMINAL IN
style_designatorKEY
surface_treatmentPHOSPHATE OVERALL
material_thickness0.125 INCHES NOMINAL IN
internal_key_quantity1
internal_straight_key_width0.125 INCHES NOMINAL IN
distance_from_centerline_to_top_of_internal_key0.500 INCHES NOMINAL IN
NSN5310-00-541-1097
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7435-66C · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.125 INCHES NOMINAL IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.500 INCHES NOMINAL IN
•
HEAT TREATMENT: AS FABRICATED
•
STYLE DESIGNATOR: KEY
•
OUTSIDE DIAMETER: 2.125 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.125 INCHES NOMINAL IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.500 INCHES NOMINAL IN
HEAT TREATMENTAS FABRICATED
STYLE DESIGNATORKEY
OUTSIDE DIAMETER2.125 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
SURFACE TREATMENTPHOSPHATE OVERALL
MATERIALSTEEL OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER1.125 INCHES NOMINAL 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 7435-66C?
7435-66C is a WASHER,KEY.
What is the NSN for 7435-66C?
7435-66C is cataloged in the U.S. Government catalog under NSN 5310-00-541-1097. 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.