PartsTable
Technical Data Sheet
MS21083N7 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL NUT, nut_style: HEXAGON, nut_height: 0.328 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, temp_rating: 250.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-902-7846, 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
MS21083N7
NSN: 5310-00-902-7846
FSC: 5310
CAGE: A0126 — LEONARDO SPA HELICOPTERS DIVISION - PRODUCTION SITE (ITA)
SPECIFICATIONS
materialSTEEL NUT
nut_styleHEXAGON
nut_height0.328 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
temp_rating250.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
hardness_rating35.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES MINIMUM NUT
surface_treatmentCADMIUM AND CHROMATE NUT
NSN5310-00-902-7846
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MS21083N7 · 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
TEMP RATING: 250.0 FAHRENHEIT MAXIMUM DEGF
NUT HEIGHT: 0.328 INCHES MAXIMUM IN
NUT STYLE: HEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES NUT
BEARING SURFACE FINISH: 125.0 MICROINCHES
BEARING SURFACE TYPE: CHAMFERED OR WASHER FACED
LUBRICATION: SOLUBLE LUBRICANT
SURFACE TREATMENT: CADMIUM AND CHROMATE NUT
TECHNICAL CHARACTERISTICS (FLIS)
TEMP RATING250.0 FAHRENHEIT MAXIMUM DEGF
NUT HEIGHT0.328 INCHES MAXIMUM IN
NUT STYLEHEXAGON
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 2 FED SPEC ALL TREATMENT RESPONSES NUT
BEARING SURFACE FINISH125.0 MICROINCHES
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
LUBRICATIONSOLUBLE LUBRICANT
SURFACE TREATMENTCADMIUM AND CHROMATE NUT
HARDNESS RATING35.0 ROCKWELL C MAXIMUM
THREAD QUANTITY PER INCH20
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
25704-281542-27-0Interchangeable
interchangeable cross-reference
interchangeable
22NTE070Interchangeable
interchangeable cross-reference
interchangeable
503445Interchangeable
interchangeable cross-reference
interchangeable
312358-002Interchangeable
interchangeable cross-reference
interchangeable
103062-1Interchangeable
interchangeable cross-reference
interchangeable
MS20364-720Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS21083N7?
MS21083N7 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace MS21083N7?
There are 11 known substitutes for MS21083N7: 25704-281542-27-0, 22NTE070, 503445 and 8 more. Substitute compatibility should be verified for your specific system.
Is MS21083N7 still available?
MS21083N7 is currently cancelled.
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