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12339924 — NUT,SLEEVE

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

12339924: NUT,SLEEVE.

The NUT,SLEEVE is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 6061 OVERALL, nut_length: 1.25 INCHES NOMINAL IN, thread_class: 2B, thread_length: 0.750 INCHES NOMINAL OVERALL IN, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-228-3299, 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
12339924
NSN: 5310-01-228-3299
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 6061 OVERALL
nut_length1.25 INCHES NOMINAL IN
thread_class2B
thread_length0.750 INCHES NOMINAL OVERALL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentPLASTIC OVERALL
nominal_thread_size0.250 INCHES IN
cross-sectional_shapeSQUARE BOTH ENDS
nut_width_across_flats0.750 INCHES NOMINAL IN
thread_quantity_per_inch20
material_document_and_classificationASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-228-3299
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 12339924 · 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
•
NUT LENGTH: 1.25 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-46168 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD LENGTH: 0.750 INCHES NOMINAL OVERALL IN
•
NUT WIDTH ACROSS FLATS: 0.750 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
NUT LENGTH1.25 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-46168 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD LENGTH0.750 INCHES NOMINAL OVERALL IN
NUT WIDTH ACROSS FLATS0.750 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B221 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
CROSS-SECTIONAL SHAPESQUARE BOTH ENDS
SURFACE TREATMENTPLASTIC OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
5590138Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 12339924?
12339924 is a NUT,SLEEVE.
What parts can replace 12339924?
There is 1 known substitute for 12339924: 5590138. Substitute compatibility should be verified for your specific system.
What is the NSN for 12339924?
12339924 is cataloged in the U.S. Government catalog under NSN 5310-01-228-3299. 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.