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PartsTable / COMPONENT / 32-21088-5
32-21088-5 ✓ 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: STEEL OVERALL, thickness: 0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN, hole_diameter: 0.630 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN, heat_treatment: AS FABRICATED, overall_diameter: 1.750 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-246-7422, 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
32-21088-5
NSN: 5310-00-246-7422
FSC: 5310
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
hole_diameter0.630 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
heat_treatmentAS FABRICATED
overall_diameter1.750 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
minimum_tensile_strength180000 POUNDS PER SQUARE INCH LBS
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationMIL-S-5626 COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classification13145 TYPE 2 CL 2 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-246-7422
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 32-21088-5 · 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
•
THICKNESS: 0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.630 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-5626 COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: 13145 TYPE 2 CL 2 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
•
MINIMUM TENSILE STRENGTH: 180000 POUNDS PER SQUARE INCH LBS
•
PERIPHERAL SHAPE STYLE: ROUND
•
HEAT TREATMENT: AS FABRICATED
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.260 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
HOLE DIAMETER0.630 INCHES MINIMUM AND 0.650 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-5626 COND D MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION13145 TYPE 2 CL 2 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH LBS
PERIPHERAL SHAPE STYLEROUND
HEAT TREATMENTAS FABRICATED
SURFACE TREATMENTCADMIUM OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
173430Interchangeable
interchangeable cross-reference
interchangeable
20708002Interchangeable
interchangeable cross-reference
interchangeable
20728002 REV M FN 4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 32-21088-5?
32-21088-5 is a WASHER,FLAT.
What parts can replace 32-21088-5?
There are 3 known substitutes for 32-21088-5: 173430, 20708002, 20728002 REV M FN 4. Substitute compatibility should be verified for your specific system.
Is 32-21088-5 still available?
32-21088-5 is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026