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EW42003 — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

EW42003: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL NUT, nut_style: HEXAGON, nut_height: 0.557 INCHES NOMINAL IN, nut_length: 0.449 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-695-3929, 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
EW42003
NSN: 5310-01-695-3929
FSC: 5310 — Nuts and Washers
CAGE: 30941 — EAST/WEST INDUSTRIES, INC. (USA)
SPECIFICATIONS
materialSTEEL NUT
nut_styleHEXAGON
nut_height0.557 INCHES NOMINAL IN
nut_length0.449 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
locking_featureNYLON INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM NUT
width_across_flats0.496 INCHES NOMINAL IN
nominal_thread_size0.250 INCHES IN
bearing_surface_typeCHAMFERED
NSN5310-01-695-3929
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: EW42003 · 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: 0.496 INCHES NOMINAL IN
•
NUT LENGTH: 0.449 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416, TYPE II, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE CAP
•
THREAD SERIES: UNF
•
HOLE CONFIGURATION STYLE: CONFIGURATION H
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.496 INCHES NOMINAL IN
NUT LENGTH0.449 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE II, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE CAP
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416, TYPE II, CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE NUT
THREAD SERIESUNF
HOLE CONFIGURATION STYLECONFIGURATION H
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
LOCKING FEATURENYLON INSERT
NUT HEIGHT0.557 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

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 EW42003?
EW42003 is a NUT,SELF-LOCKING,HEXAGON.
What is the NSN for EW42003?
EW42003 is cataloged in the U.S. Government catalog under NSN 5310-01-695-3929. 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.