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5009172 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

5009172: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include overall_diameter: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, center_hole_length: 0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: RECTANGULAR, cross-sectional_shape_style: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-500-9172, 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
5009172
NSN: 5310-00-500-9172
FSC: 5310 — Nuts and Washers
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
overall_diameter0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
center_hole_length0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleRECTANGULAR
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-500-9172
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5009172 · 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
•
CENTER HOLE LENGTH: 0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS
CENTER HOLE LENGTH0.200 INCHES MINIMUM AND 0.202 INCHES MAXIMUM IN
OVERALL DIAMETER0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLERECTANGULAR
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
5310005009172Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 5009172?
5009172 is a WASHER,FLAT.
What parts can replace 5009172?
There is 1 known substitute for 5009172: 5310005009172. Substitute compatibility should be verified for your specific system.
What is the NSN for 5009172?
5009172 is cataloged in the U.S. Government catalog under NSN 5310-00-500-9172. 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.