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ISO7089-4-A2 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ISO7089-4-A2: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include thickness: 0.5 MILLIMETERS NOMINAL MM, hole_diameter: 4.0 MILLIMETERS NOMINAL MM, overall_diameter: 9.0 MILLIMETERS NOMINAL MM, special_features: WASHER FLAT, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-563-8611, 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
ISO7089-4-A2
NSN: 5310-01-563-8611
FSC: 5310 — Nuts and Washers
CAGE: I9008 — INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO) (CHE)
SPECIFICATIONS
thickness0.5 MILLIMETERS NOMINAL MM
hole_diameter4.0 MILLIMETERS NOMINAL MM
overall_diameter9.0 MILLIMETERS NOMINAL MM
special_featuresWASHER FLAT
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-563-8611
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ISO7089-4-A2 · 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
•
OVERALL DIAMETER: 9.0 MILLIMETERS NOMINAL MM
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 4.0 MILLIMETERS NOMINAL MM
•
THICKNESS: 0.5 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER9.0 MILLIMETERS NOMINAL MM
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SPECIAL FEATURESWASHER FLAT
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER4.0 MILLIMETERS NOMINAL MM
THICKNESS0.5 MILLIMETERS NOMINAL MM
SUBSTITUTES & CROSS-REFERENCES 2
193167278Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
050332Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 ISO7089-4-A2?
ISO7089-4-A2 is a WASHER,FLAT.
What parts can replace ISO7089-4-A2?
There are 2 known substitutes for ISO7089-4-A2: 193167278, 050332. Substitute compatibility should be verified for your specific system.
What is the NSN for ISO7089-4-A2?
ISO7089-4-A2 is cataloged in the U.S. Government catalog under NSN 5310-01-563-8611. 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.