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4028882009 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

4028882009: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.564 INCHES NOMINAL IN, outside_diameter: 0.965 INCHES NOMINAL IN, special_features: FASTENER SHALL BE FREE OF EMBRITTLEMENT, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.141 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-653-4727, 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
4028882009
NSN: 5310-01-653-4727
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.564 INCHES NOMINAL IN
outside_diameter0.965 INCHES NOMINAL IN
special_featuresFASTENER SHALL BE FREE OF EMBRITTLEMENT
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.141 INCHES NOMINAL IN
end_item_identification4210016220440; MRAP - M-ATV
material_document_and_classificationASME B18.21.1-2009 SEC 2.3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyWASH, LK, SPLIT, INCH, MB, TAB
NSN5310-01-653-4727
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4028882009 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASME B18.21.1-2009 SEC 2.3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.965 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.141 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
MATERIAL DOCUMENT AND CLASSIFICATIONASME B18.21.1-2009 SEC 2.3 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.965 INCHES NOMINAL IN
MATERIAL THICKNESS0.141 INCHES NOMINAL IN
SPECIAL FEATURESFASTENER SHALL BE FREE OF EMBRITTLEMENT
PART NAME ASSIGNED BY CONTROLLING AGENCYWASH, LK, SPLIT, INCH, MB, TAB
END ITEM IDENTIFICATION4210016220440; MRAP - M-ATV
MATERIALSTEEL OVERALL
HOLE DIAMETER0.564 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
4028882Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 4028882009?
4028882009 is a WASHER,LOCK.
What parts can replace 4028882009?
There is 1 known substitute for 4028882009: 4028882. Substitute compatibility should be verified for your specific system.
What is the NSN for 4028882009?
4028882009 is cataloged in the U.S. Government catalog under NSN 5310-01-653-4727. 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.