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NASM21046C20S — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

NASM21046C20S: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.795 INCHES NOMINAL IN, temp_rating: 800.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5310-01-327-7875, 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
NASM21046C20S
NSN: 5310-01-327-7875
FSC: 5310 — Nuts and Washers
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.795 INCHES NOMINAL IN
temp_rating800.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
thread_directionRIGHT-HAND
width_across_flats1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN
nominal_thread_size1.250 INCHES IN
supplementary_featuresVALVE INDTN X EXH
thread_quantity_per_inch12
criticality_code_justificationZZZY
NSN5310-01-327-7875
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: NASM21046C20S · 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
•
WIDTH ACROSS FLATS: 1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: AMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 800.0 FAHRENHEIT NOMINAL DEGF
•
SUPPLEMENTARY FEATURES: VALVE INDTN X EXH
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS1.801 INCHES MINIMUM AND 1.814 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING800.0 FAHRENHEIT NOMINAL DEGF
SUPPLEMENTARY FEATURESVALVE INDTN X EXH
CRITICALITY CODE JUSTIFICATIONZZZY
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE1.250 INCHES IN
NUT HEIGHT0.795 INCHES NOMINAL IN
NUT STYLEHEXAGON
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 6
501-4457023 ITEM180Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
NASM21046C20SL1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
501-4457023 ITEM180L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6503-86 ITEM 180L1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6503-86 ITEM 180Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS21046C20SL1Reference 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 NASM21046C20S?
NASM21046C20S is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace NASM21046C20S?
There are 6 known substitutes for NASM21046C20S: 501-4457023 ITEM180, NASM21046C20SL1, 501-4457023 ITEM180L1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NASM21046C20S?
NASM21046C20S is cataloged in the U.S. Government catalog under NSN 5310-01-327-7875. 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.