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MS21075-08N — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21075-08N: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include nut_style: PLATE, nut_height: 0.250 INCHES MAXIMUM IN, nut_length: 0.707 INCHES MAXIMUM IN, plate_width: 0.290 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN, temp_rating: 450.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-302-5949, 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
MS21075-08N
NSN: 5310-01-302-5949
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
materialSTEEL COMP 1035 OR STEEL COMP 1050 OR STEEL COMP 4130 OR STEEL COMP 1040 OR STEEL COMP 1042 OR STEEL COMP 4340 OR STEEL COMP 8740 OVERALL
nut_stylePLATE
nut_height0.250 INCHES MAXIMUM IN
nut_length0.707 INCHES MAXIMUM IN
plate_width0.290 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
temp_rating450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNJC
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.025 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-01-302-5949
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21075-08N · 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: 0.025 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
NUT LENGTH: 0.707 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNJC
•
PLATE WIDTH: 0.290 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
•
TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
HARDNESS RATING: 49.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS
PLATE THICKNESS0.025 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
NUT LENGTH0.707 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNJC
PLATE WIDTH0.290 INCHES MINIMUM AND 0.367 INCHES MAXIMUM IN
TEMP RATING450.0 FAHRENHEIT MAXIMUM DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
HARDNESS RATING49.0 ROCKWELL C MAXIMUM
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
FEATURES PROVIDEDFLOATING NUT
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
SUBSTITUTES & CROSS-REFERENCES 2
10492892Reference document
Same NSN cross-reference
Reference document — Informative reference only
9384231602Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21075-08N?
MS21075-08N is a NUT,SELF-LOCKING,PLATE.
What parts can replace MS21075-08N?
There are 2 known substitutes for MS21075-08N: 10492892, 9384231602. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21075-08N?
MS21075-08N is cataloged in the U.S. Government catalog under NSN 5310-01-302-5949. 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.