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667351 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

667351: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 2.131 INCHES MINIMUM AND 2.131 INCHES MINIMUM AND 2.151 INCHES MAXIMUM2.151 INCHES MAXIMUM IN, outside_diameter: 3.240 INCHES MINIMUM AND 3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM3.260 INCHES MAXIMUM IN, style_designator: KEYKEY, material_thickness: 0.052 INCHES MINIMUM AND 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM0.072 INCHES MAXIMUM IN, internal_key_quantity: 11. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-262-5481, 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
667351
NSN: 5310-00-262-5481
FSC: 5310 — Nuts and Washers
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter2.131 INCHES MINIMUM AND 2.131 INCHES MINIMUM AND 2.151 INCHES MAXIMUM2.151 INCHES MAXIMUM IN
outside_diameter3.240 INCHES MINIMUM AND 3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM3.260 INCHES MAXIMUM IN
style_designatorKEYKEY
material_thickness0.052 INCHES MINIMUM AND 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM0.072 INCHES MAXIMUM IN
internal_key_quantity11
internal_straight_key_width0.474 INCHES MINIMUM AND 0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM0.494 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALLSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.865 INCHES MINIMUM AND 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM0.885 INCHES MAXIMUM IN
NSN5310-00-262-5481
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 667351 · 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: 0.474 INCHES MINIMUM AND 0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM0.494 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.865 INCHES MINIMUM AND 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM0.885 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEYKEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALLSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.240 INCHES MINIMUM AND 3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM3.260 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.052 INCHES MINIMUM AND 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM0.072 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1010 OVERALL
•
INTERNAL KEY QUANTITY: 11
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.474 INCHES MINIMUM AND 0.474 INCHES MINIMUM AND 0.494 INCHES MAXIMUM0.494 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.865 INCHES MINIMUM AND 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM0.885 INCHES MAXIMUM IN
STYLE DESIGNATORKEYKEY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALLSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.240 INCHES MINIMUM AND 3.240 INCHES MINIMUM AND 3.260 INCHES MAXIMUM3.260 INCHES MAXIMUM IN
MATERIAL THICKNESS0.052 INCHES MINIMUM AND 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM0.072 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1010 OVERALL
INTERNAL KEY QUANTITY11
HOLE DIAMETER2.131 INCHES MINIMUM AND 2.131 INCHES MINIMUM AND 2.151 INCHES MAXIMUM2.151 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 5
1229X700Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
01209879Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
057148Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
326949Reference document
Same NSN cross-reference
Reference document — Secondary reference
38342Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 667351?
667351 is a WASHER,KEY.
What parts can replace 667351?
There are 5 known substitutes for 667351: 1229X700, 01209879, 057148 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 667351?
667351 is cataloged in the U.S. Government catalog under NSN 5310-00-262-5481. 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.