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Technical Data Sheet
PartsTable / COMPONENT / 23MS35337-44
23MS35337-44 ✓ 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 WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN, hardness_rating: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM, outside_diameter: 0.489 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM AND CHROMATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-820-6655, 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
23MS35337-44
NSN: 5310-00-820-6655
FSC: 5310
CAGE: 80045 — L3HARRIS CINCINNATI ELECTRONICS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
hardness_rating45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
outside_diameter0.489 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
departure_from_cited_designatorAS MODIFIED BY MATERIAL
material_document_and_classification-FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-820-6655
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 23MS35337-44 · 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
•
HOLE DIAMETER: 0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY MATERIAL
•
MATERIAL DOCUMENT AND CLASSIFICATION: -FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
MATERIAL THICKNESS: 0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
•
OUTSIDE DIAMETER: 0.489 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
HOLE DIAMETER0.255 INCHES MINIMUM AND 0.267 INCHES MAXIMUM IN
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION-FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIAL THICKNESS0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN
OUTSIDE DIAMETER0.489 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
LSSS25CInterchangeable
interchangeable cross-reference
interchangeable
A78-9Interchangeable
interchangeable cross-reference
interchangeable
MS35337-44Interchangeable
interchangeable cross-reference
interchangeable
6220-21Interchangeable
interchangeable cross-reference
interchangeable
132634Interchangeable
interchangeable cross-reference
interchangeable
2300169Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 23MS35337-44?
23MS35337-44 is a WASHER,LOCK.
What parts can replace 23MS35337-44?
There are 6 known substitutes for 23MS35337-44: LSSS25C, A78-9, MS35337-44 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 23MS35337-44?
23MS35337-44 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-820-6655. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026