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2S7066 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2S7066: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 6.031 INCHES NOMINAL IN, outside_diameter: 7.310 INCHES NOMINAL IN, style_designator: KEY, material_thickness: 0.075 INCHES NOMINAL IN, external_key_quantity: 12. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-950-5665, 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
2S7066
NSN: 5310-00-950-5665
FSC: 5310 — Nuts and Washers
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter6.031 INCHES NOMINAL IN
outside_diameter7.310 INCHES NOMINAL IN
style_designatorKEY
material_thickness0.075 INCHES NOMINAL IN
external_key_quantity12
external_straight_key_width1.190 INCHES NOMINAL IN
overall_distance_including_keys8.340 INCHES NOMINAL IN
material_document_and_classification1E166 MFR REF ALL MATERIAL RESPONSES OVERALL
NSN5310-00-950-5665
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2S7066 · 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
•
OVERALL DISTANCE INCLUDING KEYS: 8.340 INCHES NOMINAL IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: 1E166 MFR REF ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 7.310 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.075 INCHES NOMINAL IN
•
EXTERNAL STRAIGHT KEY WIDTH: 1.190 INCHES NOMINAL IN
•
EXTERNAL KEY QUANTITY: 12
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DISTANCE INCLUDING KEYS8.340 INCHES NOMINAL IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATION1E166 MFR REF ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER7.310 INCHES NOMINAL IN
MATERIAL THICKNESS0.075 INCHES NOMINAL IN
EXTERNAL STRAIGHT KEY WIDTH1.190 INCHES NOMINAL IN
EXTERNAL KEY QUANTITY12
MATERIALSTEEL OVERALL
HOLE DIAMETER6.031 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 2S7066?
2S7066 is a WASHER,KEY.
What is the NSN for 2S7066?
2S7066 is cataloged in the U.S. Government catalog under NSN 5310-00-950-5665. 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.