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Technical Data Sheet
PartsTable / COMPONENT / CM-23431
CM-23431 ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 302 OVERALL, thickness: 0.020 INCHES NOMINAL IN, hole_diameter: 0.285 INCHES NOMINAL IN, overall_diameter: 0.390 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, peripheral_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-831-2323, 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
CM-23431
NSN: 5310-00-831-2323
FSC: 5310
CAGE: 0EGF1 — CMP HYDRAULICS INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 302 OVERALL
thickness0.020 INCHES NOMINAL IN
hole_diameter0.285 INCHES NOMINAL IN
overall_diameter0.390 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-831-2323
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: CM-23431 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 302 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
THICKNESS: 0.020 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.285 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 302 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5515 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5516 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THICKNESS0.020 INCHES NOMINAL IN
HOLE DIAMETER0.285 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.390 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
23431Interchangeable
interchangeable cross-reference
interchangeable
146-01007-1Interchangeable
interchangeable cross-reference
interchangeable
122Interchangeable
interchangeable cross-reference
interchangeable
1376-18-283PInterchangeable
interchangeable cross-reference
interchangeable
2343-2Interchangeable
interchangeable cross-reference
interchangeable
1376-18-283Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CM-23431?
CM-23431 is a WASHER,FLAT.
What parts can replace CM-23431?
There are 9 known substitutes for CM-23431: 23431, 146-01007-1, 122 and 6 more. Substitute compatibility should be verified for your specific system.
Is CM-23431 still available?
CM-23431 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