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Technical Data Sheet
PartsTable / COMPONENT / SCB69325-4
SCB69325-4 ✓ 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: 0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN, hole_diameter: 0.330 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, overall_diameter: 0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN, features_provided: CASEHARDENED, surface_treatment: CHROMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-521-8723, 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
SCB69325-4
NSN: 5310-00-521-8723
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
hole_diameter0.330 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
overall_diameter0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
features_providedCASEHARDENED
surface_treatmentCHROMIUM OVERALL
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationQQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-521-8723
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SCB69325-4 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FEATURES PROVIDED: CASEHARDENED
•
PERIPHERAL SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIALSTEEL OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-636-CANCELED FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FEATURES PROVIDEDCASEHARDENED
PERIPHERAL SHAPE STYLEROUND
OVERALL DIAMETER0.547 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN
THICKNESS0.030 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
SURFACE TREATMENTCHROMIUM OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
50515Interchangeable
interchangeable cross-reference
interchangeable
A6182Interchangeable
interchangeable cross-reference
interchangeable
43551Interchangeable
interchangeable cross-reference
interchangeable
19AZ679Interchangeable
interchangeable cross-reference
interchangeable
19AS679Interchangeable
interchangeable cross-reference
interchangeable
3036648Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SCB69325-4?
SCB69325-4 is a WASHER,FLAT.
What parts can replace SCB69325-4?
There are 7 known substitutes for SCB69325-4: 50515, A6182, 43551 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SCB69325-4?
SCB69325-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-521-8723. 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