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190428 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: CELLULOSE OVERALL, thickness: 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN, hole_diameter: 0.781 INCHES NOMINAL IN, overall_diameter: 2.000 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-291-4619, 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
190428
NSN: 5310-00-291-4619
FSC: 5310
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialCELLULOSE OVERALL
thickness0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
hole_diameter0.781 INCHES NOMINAL IN
overall_diameter2.000 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM D710 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-291-4619
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 190428 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM D710 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 2.000 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.781 INCHES NOMINAL IN
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL: CELLULOSE OVERALL
•
THICKNESS: 0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONASTM D710 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER2.000 INCHES NOMINAL IN
HOLE DIAMETER0.781 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
MATERIALCELLULOSE OVERALL
THICKNESS0.089 INCHES MINIMUM AND 0.099 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
40-11254-001Interchangeable
interchangeable cross-reference
interchangeable
11254Interchangeable
interchangeable cross-reference
interchangeable
RSA11254Interchangeable
interchangeable cross-reference
interchangeable
R11254Interchangeable
interchangeable cross-reference
interchangeable
VDLX0408000ACInterchangeable
interchangeable cross-reference
interchangeable
37-1018Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 190428?
190428 is a WASHER,FLAT.
What parts can replace 190428?
There are 20 known substitutes for 190428: 40-11254-001, 11254, RSA11254 and 17 more. Substitute compatibility should be verified for your specific system.
Is 190428 still available?
190428 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026