PartsTable
Technical Data Sheet
88-20033-33B ✓ 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: COPPER ALLOY 260 OVERALL, thickness: 0.051 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN, hole_diameter: 0.406 INCHES NOMINAL IN, overall_diameter: 0.812 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-478-6342, 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
88-20033-33B
NSN: 5310-01-478-6342
FSC: 5310
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)
SPECIFICATIONS
materialCOPPER ALLOY 260 OVERALL
thickness0.051 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
hole_diameter0.406 INCHES NOMINAL IN
overall_diameter0.812 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
end_item_identification6115-01-431-3063;GENERATOR SET,DIESEL ENGINE
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM B 36,UNS C26000 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-478-6342
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 88-20033-33B · 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: COPPER ALLOY 260 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B 36,UNS C26000 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER: 0.406 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLE: ROUND
PERIPHERAL SHAPE STYLE: ROUND
THICKNESS: 0.051 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATION6115-01-431-3063;GENERATOR SET,DIESEL ENGINE
MATERIALCOPPER ALLOY 260 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B 36,UNS C26000 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.406 INCHES NOMINAL IN
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.051 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.812 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
88-20564-12Interchangeable
interchangeable cross-reference
interchangeable
88-20033-25AInterchangeable
interchangeable cross-reference
interchangeable
MS51412-25Interchangeable
interchangeable cross-reference
interchangeable
1DD598Interchangeable
interchangeable cross-reference
interchangeable
88-20033Interchangeable
interchangeable cross-reference
interchangeable
HFLW025EGInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 88-20033-33B?
88-20033-33B is a WASHER,FLAT.
What parts can replace 88-20033-33B?
There are 16 known substitutes for 88-20033-33B: 88-20564-12, 88-20033-25A, MS51412-25 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 88-20033-33B?
88-20033-33B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-478-6342. This indicates validated use in U.S. government and defense supply chains.
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