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300-1690-059 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

300-1690-059: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thickness: 0.059 INCHES NOMINAL IN, hole_diameter: 0.330 INCHES NOMINAL IN, overall_diameter: 0.438 INCHES NOMINAL IN, special_features: MATERIAL IS STEEL 301 OR 302 OR 304, peripheral_shape_style: ROUND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-499-2335, 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
300-1690-059
NSN: 5310-01-499-2335
NIINs: 014992335, 015097374
FSC: 5310 — Nuts and Washers
CAGE: 31442 — NORTHROP GRUMMAN SYSTEMS CORPORATION DBA NORTHROP GRUMMAN SYSTEMS CORP (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.059 INCHES NOMINAL IN
hole_diameter0.330 INCHES NOMINAL IN
overall_diameter0.438 INCHES NOMINAL IN
special_featuresMATERIAL IS STEEL 301 OR 302 OR 304
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identificationQ14A TAIL SEC
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-499-2335
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 300-1690-059 · 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: 0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: STEEL COMP 304 OVERALL
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 0.093 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
•
THICKNESS: 0.059 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER0.132 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
END ITEM IDENTIFICATIONJP5 FUELING
MATERIALSTEEL COMP 304 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.093 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN
THICKNESS0.059 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
300-169-059Reference 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 300-1690-059?
300-1690-059 is a WASHER,FLAT.
What parts can replace 300-1690-059?
There is 1 known substitute for 300-1690-059: 300-169-059. Substitute compatibility should be verified for your specific system.
What is the NSN for 300-1690-059?
300-1690-059 is cataloged in the U.S. Government catalog under NSN 5310-01-499-2335. 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.