PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MS21056L3
MS21056L3 ✓ 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: IRON ALLOY 660 OVERALL, nut_style: PLATE, nut_height: 0.250 INCHES MAXIMUM IN, nut_length: 0.653 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-773-8657, 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
MS21056L3
NSN: 5310-00-773-8657
FSC: 5310
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_height0.250 INCHES MAXIMUM IN
nut_length0.653 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
plate_thickness0.047 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
NSN5310-00-773-8657
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21056L3 · 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
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
MOUNTING HOLE ARRANGEMENT STYLE: 2 HOLES
•
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER: 0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT STYLE: PLATE
•
COUNTERBORE DIAMETER: 0.194 INCHES MINIMUM NUT IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
TEMP RATING: 450.0 FAHRENHEIT NOMINAL DEGF
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
MOUNTING HOLE ARRANGEMENT STYLE2 HOLES
DISTANCE FROM APERTURE CENTER TO MOUNTING HOLE CENTER0.339 INCHES MINIMUM AND 0.349 INCHES MAXIMUM IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT STYLEPLATE
COUNTERBORE DIAMETER0.194 INCHES MINIMUM NUT IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TEMP RATING450.0 FAHRENHEIT NOMINAL DEGF
MATERIALIRON ALLOY 660 OVERALL
NUT LENGTH0.653 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
DHZ-071219-0008Interchangeable
interchangeable cross-reference
interchangeable
W41294U6000A2Interchangeable
interchangeable cross-reference
interchangeable
67900007-1Interchangeable
interchangeable cross-reference
interchangeable
12720E-02BCInterchangeable
interchangeable cross-reference
interchangeable
R3000C3MKInterchangeable
interchangeable cross-reference
interchangeable
K3001-3BCInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MS21056L3?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MS21056L3?
MS21056L3 is a NUT,SELF-LOCKING,PLATE.
What parts can replace MS21056L3?
There are 12 known substitutes for MS21056L3: DHZ-071219-0008, W41294U6000A2, 67900007-1 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS21056L3?
MS21056L3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-773-8657. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — MS21056L3

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026