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MS21076L4N — NUT,SELF-LOCKING,PLATE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MS21076L4N: NUT,SELF-LOCKING,PLATE.

The NUT,SELF-LOCKING,PLATE is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, nut_style: PLATE, nut_height: 0.281 INCHES MAXIMUM IN, nut_length: 0.801 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT OR SOLUBLE LUBRICANT, plate_width: 0.350 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-313-3977, 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
MS21076L4N
NSN: 5310-01-313-3977
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
materialIRON ALLOY 660 OVERALL
nut_stylePLATE
nut_height0.281 INCHES MAXIMUM IN
nut_length0.801 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT OR SOLUBLE LUBRICANT
plate_width0.350 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
temp_rating450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.027 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
NSN5310-01-313-3977
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21076L4N · 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 OR SOLUBLE LUBRICANT
•
PLATE THICKNESS: 0.027 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
NUT LENGTH: 0.801 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
PLATE WIDTH: 0.350 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
•
TEMP RATING: 450.0 FAHRENHEIT MAXIMUM DEGF
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
TECHNICAL CHARACTERISTICS
LUBRICATIONDRY FILM LUBRICANT OR SOLUBLE LUBRICANT
PLATE THICKNESS0.027 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
NUT LENGTH0.801 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
PLATE WIDTH0.350 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
TEMP RATING450.0 FAHRENHEIT MAXIMUM DEGF
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
HARDNESS RATING49.0 ROCKWELL C MAXIMUM
CRITICALITY CODE JUSTIFICATIONAGAV
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
PL405545-01 FN 3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
PL405522-01 FN 3Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 MS21076L4N?
MS21076L4N is a NUT,SELF-LOCKING,PLATE.
What parts can replace MS21076L4N?
There are 2 known substitutes for MS21076L4N: PL405545-01 FN 3, PL405522-01 FN 3. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21076L4N?
MS21076L4N is cataloged in the U.S. Government catalog under NSN 5310-01-313-3977. 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.