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A003AX0728AA — NUT,SELF-LOCKING,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A003AX0728AA: NUT,SELF-LOCKING,HEXAGON.

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: HEXAGON, nut_height: 0.200 INCHES NOMINAL IN, thread_series: UNEF, thread_direction: RIGHT-HAND, width_across_flats: 0.625 INCHES NOMINAL IN, nominal_thread_size: 0.438 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-347-8255, 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
A003AX0728AA
NSN: 5310-01-347-8255
FSC: 5310 — Nuts and Washers
CAGE: 05593 — SAFRAN ELECTRICAL COMPONENTS USA, INC DIV SAFRAN ELECTRICAL COMPONENTS USA (USA)
SPECIFICATIONS
nut_styleHEXAGON
nut_height0.200 INCHES NOMINAL IN
thread_seriesUNEF
thread_directionRIGHT-HAND
width_across_flats0.625 INCHES NOMINAL IN
nominal_thread_size0.438 INCHES IN
thread_quantity_per_inch28
NSN5310-01-347-8255
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A003AX0728AA · 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: 0.625 INCHES NOMINAL IN
•
THREAD SERIES: UNEF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.438 INCHES IN
•
NUT HEIGHT: 0.200 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 28
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.625 INCHES NOMINAL IN
THREAD SERIESUNEF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.438 INCHES IN
NUT HEIGHT0.200 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD QUANTITY PER INCH28
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 1
990016-641Reference document
Same NSN cross-reference
Reference document — Secondary 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 A003AX0728AA?
A003AX0728AA is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace A003AX0728AA?
There is 1 known substitute for A003AX0728AA: 990016-641. Substitute compatibility should be verified for your specific system.
What is the NSN for A003AX0728AA?
A003AX0728AA is cataloged in the U.S. Government catalog under NSN 5310-01-347-8255. 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.