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1A7488 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

1A7488: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include length: 0.469 INCHES NOMINAL IN, material: STEEL OVERALL, thickness: 0.059 INCHES NOMINAL IN, hole_diameter: 0.265 INCHES NOMINAL IN, surface_treatment: ZINC OVERALL, width_across_flats: 0.469 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-350-2793, 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
1A7488
NSN: 5310-00-350-2793
FSC: 5310 — Nuts and Washers
CAGE: 95201 — NAPCO INTERNATIONAL LLC DBA NAPCO INTERNATIONAL INC (USA)
SPECIFICATIONS
length0.469 INCHES NOMINAL IN
materialSTEEL OVERALL
thickness0.059 INCHES NOMINAL IN
hole_diameter0.265 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
width_across_flats0.469 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-350-2793
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1A7488 · 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: 0.469 INCHES NOMINAL IN
•
LENGTH: 0.469 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
SURFACE TREATMENT: ZINC OVERALL
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
MATERIAL: STEEL OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.265 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.469 INCHES NOMINAL IN
LENGTH0.469 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTZINC OVERALL
PERIPHERAL SHAPE STYLERECTANGULAR
MATERIALSTEEL OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.265 INCHES NOMINAL IN
THICKNESS0.059 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
9B8717Reference document
Same NSN cross-reference
Reference document — Secondary reference
3B4631Reference document
Same NSN cross-reference
Reference document — Secondary reference
P2949Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1A7488?
1A7488 is a WASHER,FLAT.
What parts can replace 1A7488?
There are 3 known substitutes for 1A7488: 9B8717, 3B4631, P2949. Substitute compatibility should be verified for your specific system.
What is the NSN for 1A7488?
1A7488 is cataloged in the U.S. Government catalog under NSN 5310-00-350-2793. 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.