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1229C341 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1229C341: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 1.500 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN, outside_diameter: 2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM IN, style_designator: KEY, material_thickness: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN, internal_straight_key_width: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-515-9570, 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
1229C341
NSN: 5310-00-515-9570
FSC: 5310 — Nuts and Washers
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter1.500 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
outside_diameter2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM IN
style_designatorKEY
material_thickness0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
internal_key_quantity1
internal_straight_key_width0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
material_document_and_classificationSAE 1010 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.631 INCHES MINIMUM AND 0.651 INCHES MAXIMUM IN
NSN5310-00-515-9570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1229C341 · 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: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.631 INCHES MINIMUM AND 0.651 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1010 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1010 OVERALL
•
INTERNAL KEY QUANTITY: 1
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.631 INCHES MINIMUM AND 0.651 INCHES MAXIMUM IN
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1010 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM IN
MATERIAL THICKNESS0.115 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1010 OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER1.500 INCHES MINIMUM AND 1.562 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 4
90371Reference document
Same NSN cross-reference
Reference document — Secondary reference
JT10555Reference document
Same NSN cross-reference
Reference document — Secondary reference
630665Reference document
Same NSN cross-reference
Reference document — Secondary reference
327619Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1229C341?
1229C341 is a WASHER,KEY.
What parts can replace 1229C341?
There are 4 known substitutes for 1229C341: 90371, JT10555, 630665 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1229C341?
1229C341 is cataloged in the U.S. Government catalog under NSN 5310-00-515-9570. 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.