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PartsTable / COMPONENT / 28959385
28959385 ✓ 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 color: RED OVERALL, material: STEEL OVERALL, hole_diameter: 5.1 MILLIMETERS NOMINAL MM, outside_diameter: 9.2 MILLIMETERS MAXIMUM MM, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC AND DICHROMATE 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 5310-01-137-4508, 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
28959385
NSN: 5310-01-137-4508
FSC: 5310
CAGE: 4J007 — MSC INDUSTRIAL DIRECT CO., INC. (USA)
SPECIFICATIONS
colorRED OVERALL
materialSTEEL OVERALL
hole_diameter5.1 MILLIMETERS NOMINAL MM
outside_diameter9.2 MILLIMETERS MAXIMUM MM
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC AND DICHROMATE OVERALL
material_thickness1.1 MILLIMETERS MINIMUM AND 1.3 MILLIMETERS MAXIMUM MM
material_document_and_classificationGRADE 2,CAGEC 72741 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-137-4508
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 28959385 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL THICKNESS: 1.1 MILLIMETERS MINIMUM AND 1.3 MILLIMETERS MAXIMUM MM
•
MATERIAL DOCUMENT AND CLASSIFICATION: GRADE 2,CAGEC 72741 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: ZINC AND DICHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
•
COLOR: RED OVERALL
•
OUTSIDE DIAMETER: 9.2 MILLIMETERS MAXIMUM MM
•
HOLE DIAMETER: 5.1 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL THICKNESS1.1 MILLIMETERS MINIMUM AND 1.3 MILLIMETERS MAXIMUM MM
MATERIAL DOCUMENT AND CLASSIFICATIONGRADE 2,CAGEC 72741 MFR REF SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTZINC AND DICHROMATE OVERALL
MATERIALSTEEL OVERALL
COLORRED OVERALL
OUTSIDE DIAMETER9.2 MILLIMETERS MAXIMUM MM
HOLE DIAMETER5.1 MILLIMETERS NOMINAL MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
C3-1/8-TO-10R-GInterchangeable
interchangeable cross-reference
interchangeable
MILR55182-7Interchangeable
interchangeable cross-reference
interchangeable
0699-1902Interchangeable
interchangeable cross-reference
interchangeable
ASTM-D2466Interchangeable
interchangeable cross-reference
interchangeable
435-005Interchangeable
interchangeable cross-reference
interchangeable
4041Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 28959385?
28959385 is a WASHER,LOCK.
What parts can replace 28959385?
There are 9 known substitutes for 28959385: C3-1/8-TO-10R-G, MILR55182-7, 0699-1902 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 28959385?
28959385 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-137-4508. 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