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23059004 ITEM 20 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

23059004 ITEM 20: 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: 0.759 INCHES MAXIMUM IN, temp_rating: 40.0 FAHRENHEIT MINIMUM AND 450.0 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 5310-01-439-5926, 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
23059004 ITEM 20
NSN: 5310-01-439-5926
FSC: 5310 — Nuts and Washers
CAGE: 63005 — ROLLS-ROYCE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.759 INCHES MAXIMUM IN
temp_rating40.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch18
NSN5310-01-439-5926
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 23059004 ITEM 20 · 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: 0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
•
THREAD SERIES: UNIFIED NATIONAL JOINT FINE (UNJF)
•
TEMP RATING: 40.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT HEIGHT: 0.759 INCHES MAXIMUM IN
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
THREAD SERIESUNIFIED NATIONAL JOINT FINE (UNJF)
TEMP RATING40.0 FAHRENHEIT MINIMUM AND 450.0 FAHRENHEIT MAXIMUM DEGF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.625 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.759 INCHES MAXIMUM IN
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD QUANTITY PER INCH18
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 2
59FC-1018Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
23036115-105Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 23059004 ITEM 20?
23059004 ITEM 20 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 23059004 ITEM 20?
There are 2 known substitutes for 23059004 ITEM 20: 59FC-1018, 23036115-105. Substitute compatibility should be verified for your specific system.
What is the NSN for 23059004 ITEM 20?
23059004 ITEM 20 is cataloged in the U.S. Government catalog under NSN 5310-01-439-5926. 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.