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4033259 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4033259: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thickness: 0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN, hole_diameter: 0.589 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN, overall_diameter: 0.868 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN, special_features: FASTENER SHALL BE FREE OF HYDROGEN EMBRITTLEMENT, surface_treatment: PHOSPHATE AND ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-612-0705, 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
4033259
NSN: 5310-01-612-0705
NIINs: 016120705, 016139737, 016529540, 016529940, 016530010, 016532627, 016532634, 016534288, 016574248, 016574251, 016574252, 016587411, 016612025, 016612476, 016663303
FSC: 5310 — Nuts and Washers
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.108 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN
hole_diameter0.589 INCHES MINIMUM AND 0.609 INCHES MAXIMUM IN
overall_diameter0.868 INCHES MINIMUM AND 0.905 INCHES MAXIMUM IN
special_featuresFASTENER SHALL BE FREE OF HYDROGEN EMBRITTLEMENT
surface_treatmentPHOSPHATE AND ZINC OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification4210-01-622-0440; MRAP - M-ATV
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM F436 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyWASH, FLT, INCH HDN TAB
NSN5310-01-612-0705
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4033259 · 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
SUBSTITUTES & CROSS-REFERENCES 1
4000317Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4033259?
4033259 is a WASHER,FLAT.
What parts can replace 4033259?
There is 1 known substitute for 4033259: 4000317. Substitute compatibility should be verified for your specific system.
What is the NSN for 4033259?
4033259 is cataloged in the U.S. Government catalog under NSN 5310-01-612-0705. 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.