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PartsTable / COMPONENT / M21143/Z-106
M21143/Z-106 ✓ 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 M21143/Z-106 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-969-6769, 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
M21143/Z-106
NSN: 5315-00-969-6769
FSC: 5315
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM21143/Z-106
NSN5315-00-969-6769
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: M21143/Z-106 · 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
•
SURFACE FINISH: 10.0 MICROINCHES OUTSIDE DIAMETER
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
FIRST END STYLE: SQUARE
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
•
PIN OVERALL LENGTH: 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE FINISH10.0 MICROINCHES OUTSIDE DIAMETER
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
FIRST END STYLESQUARE
SURFACE TREATMENTPASSIVATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL COMP 303 OVERALL
PIN OVERALL LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
PIN OVERALL DIAMETER0.1873 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
103696Interchangeable
interchangeable cross-reference
interchangeable
MIL-P-21143Interchangeable
interchangeable cross-reference
interchangeable
141119Interchangeable
interchangeable cross-reference
interchangeable
8P15-200-253Interchangeable
interchangeable cross-reference
interchangeable
3C3159P03Interchangeable
interchangeable cross-reference
interchangeable
950111-61Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M21143/Z-106?
M21143/Z-106 is a M21143/Z-106.
What parts can replace M21143/Z-106?
There are 17 known substitutes for M21143/Z-106: 103696, MIL-P-21143, 141119 and 14 more. Substitute compatibility should be verified for your specific system.
Is M21143/Z-106 still available?
M21143/Z-106 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