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MS21059L04 — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21059L04: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: PLATE, nut_height: 0.175 INCHES MAXIMUM IN, nut_length: 0.948 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, plate_width: 0.290 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-777-5782, 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
MS21059L04
NSN: 5310-00-777-5782
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 OVERALL
nut_stylePLATE
nut_height0.175 INCHES MAXIMUM IN
nut_length0.948 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
plate_width0.290 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.032 INCHES MAXIMUM IN
NSN5310-00-777-5782
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21059L04 · 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
•
LUBRICATION: DRY FILM LUBRICANT
•
PLATE THICKNESS: 0.032 INCHES MAXIMUM IN
•
NUT LENGTH: 0.948 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNJC
•
PLATE WIDTH: 0.290 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
•
TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT
PLATE THICKNESS0.032 INCHES MAXIMUM IN
NUT LENGTH0.948 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNJC
PLATE WIDTH0.290 INCHES MINIMUM AND 0.416 INCHES MAXIMUM IN
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
HARDNESS RATING49.0 ROCKWELL C MAXIMUM
MOUNTING HOLE DIAMETER0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 6
13600-40Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
13605-40Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
NAS686A04Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
T65S440SReference document
Same NSN cross-reference
Reference document — Secondary reference
RF200A04Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
418459-704Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS21059L04?
MS21059L04 is a NUT,SELF-LOCKING,PLATE.
What parts can replace MS21059L04?
There are 6 known substitutes for MS21059L04: 13600-40, 13605-40, NAS686A04 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21059L04?
MS21059L04 is cataloged in the U.S. Government catalog under NSN 5310-00-777-5782. 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.