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PartsTable / COMPONENT / 504B5-73-48
504B5-73-48 ✓ 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: ALUMINUM ALLOY 2024 OVERALL, thickness: 0.015 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN, hole_diameter: 0.250 INCHES NOMINAL IN, overall_diameter: 0.375 INCHES NOMINAL IN, surface_treatment: ANODIZE OVERALL, peripheral_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 5310-00-209-5624, 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
504B5-73-48
NSN: 5310-00-209-5624
FSC: 5310
CAGE: 94033 — CARDWELL CONDENSER CORP LAPOINTE-ADMIRAL DIV (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024 OVERALL
thickness0.015 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
hole_diameter0.250 INCHES NOMINAL IN
overall_diameter0.375 INCHES NOMINAL IN
surface_treatmentANODIZE OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-A-355 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-209-5624
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 504B5-73-48 · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
SURFACE TREATMENT: ANODIZE OVERALL
•
MATERIAL: ALUMINUM ALLOY 2024 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THICKNESS: 0.015 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-355 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
SURFACE TREATMENTANODIZE OVERALL
MATERIALALUMINUM ALLOY 2024 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THICKNESS0.015 INCHES MINIMUM AND 0.047 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-355 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OVERALL DIAMETER0.375 INCHES NOMINAL IN
HOLE DIAMETER0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
206120Interchangeable
interchangeable cross-reference
interchangeable
05086ABInterchangeable
interchangeable cross-reference
interchangeable
3921P11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 504B5-73-48?
504B5-73-48 is a WASHER,FLAT.
What parts can replace 504B5-73-48?
There are 3 known substitutes for 504B5-73-48: 206120, 05086AB, 3921P11. Substitute compatibility should be verified for your specific system.
What is the NSN for 504B5-73-48?
504B5-73-48 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-209-5624. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026