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Technical Data Sheet
PartsTable / COMPONENT / 055237-00
055237-00 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The KEY,MACHINE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL, overall_width: 0.250 INCHES NOMINAL IN, overall_length: 3.750 INCHES NOMINAL IN, material_document_and_classification: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-01-197-6256, 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
055237-00
NSN: 5315-01-197-6256
FSC: 5315
CAGE: 93232 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS WRIGHT ENGINEERED PUMP DIVISION USE CAGE CODE 0UBG9 FOR CATALOGING (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
overall_width0.250 INCHES NOMINAL IN
overall_length3.750 INCHES NOMINAL IN
material_document_and_classificationQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
NSN5315-01-197-6256
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 055237-00 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
MATERIAL: NICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH3.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL
OVERALL WIDTH0.250 INCHES NOMINAL IN
MATERIALNICKEL ALLOY 400 OR NICKEL ALLOY R-405 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
349780Interchangeable
interchangeable cross-reference
interchangeable
M6129Interchangeable
interchangeable cross-reference
interchangeable
4FP6129Interchangeable
interchangeable cross-reference
interchangeable
55-237Interchangeable
interchangeable cross-reference
interchangeable
50308Interchangeable
interchangeable cross-reference
interchangeable
460237-04Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 055237-00?
055237-00 is a KEY,MACHINE.
What parts can replace 055237-00?
There are 14 known substitutes for 055237-00: 349780, M6129, 4FP6129 and 11 more. Substitute compatibility should be verified for your specific system.
Is 055237-00 still available?
055237-00 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026