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MS21078-06 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21078-06: NUT,SELF-LOCKING,PLATE.

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: 0.375 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT NOMINAL DEGF. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-726-9070, 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
MS21078-06
NSN: 5310-00-726-9070
FSC: 5310 — Nuts and Washers
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
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_width0.375 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
hardness_rating32.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
plate_thickness0.075 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-00-726-9070
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21078-06 · 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
•
PLATE THICKNESS: 0.075 INCHES MAXIMUM IN
•
NUT LENGTH: 0.984 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
PLATE WIDTH: 0.375 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
•
TEMP RATING: 250.0 FAHRENHEIT NOMINAL DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
HARDNESS RATING: 32.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.075 INCHES MAXIMUM IN
NUT LENGTH0.984 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
PLATE WIDTH0.375 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN
TEMP RATING250.0 FAHRENHEIT NOMINAL DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
HARDNESS RATING32.0 ROCKWELL C MAXIMUM
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
SUBSTITUTES & CROSS-REFERENCES 1
8805941Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21078-06?
MS21078-06 is a NUT,SELF-LOCKING,PLATE.
What parts can replace MS21078-06?
There is 1 known substitute for MS21078-06: 8805941. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21078-06?
MS21078-06 is cataloged in the U.S. Government catalog under NSN 5310-00-726-9070. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.