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A-028-01N-002-320 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

A-028-01N-002-320: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thickness: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN, hole_diameter: 0.531 INCHES NOMINAL IN, overall_diameter: 1.203 INCHES MINIMUM AND 1.232 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-243-9919, 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
A-028-01N-002-320
NSN: 5310-00-243-9919
NIINs: 002439919, 009917193
FSC: 5310 — Nuts and Washers
CAGE: 10941 — CARVER PUMP COMPANY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thickness0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN
hole_diameter0.531 INCHES NOMINAL IN
overall_diameter1.203 INCHES MINIMUM AND 1.232 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-243-9919
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A-028-01N-002-320 · 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: 0.219 INCHES NOMINAL IN
•
LENGTH: 0.347 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: COPPER ALLOY OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.531 INCHES NOMINAL IN
•
THICKNESS: 0.219 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.219 INCHES NOMINAL IN
LENGTH0.347 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLERECTANGULAR
MATERIALCOPPER ALLOY OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.531 INCHES NOMINAL IN
THICKNESS0.219 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
028-01N0-01-300Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A-028-01N-002-320?
A-028-01N-002-320 is a WASHER,FLAT.
What parts can replace A-028-01N-002-320?
There is 1 known substitute for A-028-01N-002-320: 028-01N0-01-300. Substitute compatibility should be verified for your specific system.
What is the NSN for A-028-01N-002-320?
A-028-01N-002-320 is cataloged in the U.S. Government catalog under NSN 5310-00-243-9919. 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.