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Technical Data Sheet
PartsTable / COMPONENT / MS21077-06
MS21077-06 ✓ 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 NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYAMIDE NYLON LOCKING INSERT, nut_style: PLATE, nut_height: 0.160 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN, nut_length: 0.984 INCHES MAXIMUM IN, plate_width: 0.328 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-726-9076, 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
MS21077-06
NSN: 5310-00-726-9076
FSC: 5310
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialPLASTIC POLYAMIDE NYLON LOCKING INSERT
nut_stylePLATE
nut_height0.160 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
nut_length0.984 INCHES MAXIMUM IN
plate_width0.328 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
hardness_rating36.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
plate_thickness0.075 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-00-726-9076
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21077-06 · 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: PLASTIC POLYAMIDE NYLON LOCKING INSERT
•
NUT HEIGHT: 0.160 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
•
PLATE THICKNESS: 0.075 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ANODIZE OR CHROMATE OR CADMIUM SHELL
•
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER: 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALPLASTIC POLYAMIDE NYLON LOCKING INSERT
NUT HEIGHT0.160 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN
PLATE THICKNESS0.075 INCHES MAXIMUM IN
SURFACE TREATMENTANODIZE OR CHROMATE OR CADMIUM SHELL
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN
MATERIALSTEEL NUT
THREAD DIRECTIONRIGHT-HAND
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
PLATE WIDTH0.328 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
838255Interchangeable
interchangeable cross-reference
interchangeable
17.50-25Interchangeable
interchangeable cross-reference
interchangeable
420514Interchangeable
interchangeable cross-reference
interchangeable
X/GP2/CLL/TYBA/17.50-25/16 PLYInterchangeable
interchangeable cross-reference
interchangeable
23059926Interchangeable
interchangeable cross-reference
interchangeable
NA401-62Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21077-06?
MS21077-06 is a NUT,SELF-LOCKING,PLATE.
What parts can replace MS21077-06?
There are 9 known substitutes for MS21077-06: 838255, 17.50-25, 420514 and 6 more. Substitute compatibility should be verified for your specific system.
Is MS21077-06 still available?
MS21077-06 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