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NASM21224 — NUT,SELF-LOCKING,ASSEMBLED WASHE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NASM21224: NUT,SELF-LOCKING,ASSEMBLED WASHE.

NUT,SELF-LOCKING,ASSEMBLED WASHE. Key specifications include material: PLASTIC NYLON LOCKING INSERT, nut_style: FLAT WITH TURNED BACK EDGE, nut_height: 0.150 INCHES MINIMUM IN, temp_rating: 250.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-00-008-9054, 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
NASM21224
NSN: 5310-00-008-9054
NIINs: 000089054, 016426447
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
materialPLASTIC NYLON LOCKING INSERT
nut_styleFLAT WITH TURNED BACK EDGE
nut_height0.150 INCHES MINIMUM IN
temp_rating250.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
overall_height0.546 INCHES MINIMUM AND 0.576 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
special_featuresSURFACE FINISH SHALL NOT EXCEED 125 MICROINCHES;NUT IS RED IN COLOR;ULTIMATE TENSILE STRENGTH IS 5600 LBS.MIN LBS
thread_directionRIGHT-HAND
surface_treatmentCADMIUM NUT
width_across_flats0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
NSN5310-00-008-9054
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NASM21224 · 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
•
WASHER OUTSIDE DIAMETER: 1.050 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE WASHER
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 250.0 FAHRENHEIT MAXIMUM DEGF
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.630 INCHES MINIMUM AND 0.670 INCHES MAXIMUM IN
WASHER OUTSIDE DIAMETER1.050 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.865 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
BEARING SURFACE FINISH125.0 MICROINCHES
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541 MIL SPEC SINGLE TREATMENT RESPONSE WASHER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING250.0 FAHRENHEIT MAXIMUM DEGF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/6,T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-250/13,T6 FED SPEC 2ND MATERIAL RESPONSE WASHER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5024 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5020 ASSN STD 2ND MATERIAL RESPONSE OR AMS 6322 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6323 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6325 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6327 ASSN STD 3RD MATERIAL RESPONSE OR AMS 6358 ASSN STD 3RD MATERIAL RESPONSE NUT
SUBSTITUTES & CROSS-REFERENCES 3
2NE8235-9Reference document
Same NSN cross-reference
Reference document — Secondary reference
NE8235-9Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS21224-9Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is NASM21224?
NASM21224 is a NUT,SELF-LOCKING,ASSEMBLED WASHE.
What parts can replace NASM21224?
There are 3 known substitutes for NASM21224: 2NE8235-9, NE8235-9, MS21224-9. Substitute compatibility should be verified for your specific system.
What is the NSN for NASM21224?
NASM21224 is cataloged in the U.S. Government catalog under NSN 5310-00-008-9054. 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.