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SCB69389-4 — Technical Data Sheet

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— · 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 thickness: 0.0367 INCHES MINIMUM AND 0.0387 INCHES MAXIMUM IN, overall_diameter: 0.422 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND, cross-sectional_shape_style: RECTANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-00-521-8475, 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
SCB69389-4
NSN: 5310-00-521-8475
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
thickness0.0367 INCHES MINIMUM AND 0.0387 INCHES MAXIMUM IN
overall_diameter0.422 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-521-8475
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SCB69389-4 · 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
•
THICKNESS: 0.0367 INCHES MINIMUM AND 0.0387 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OVERALL DIAMETER: 0.422 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
TECHNICAL CHARACTERISTICS
THICKNESS0.0367 INCHES MINIMUM AND 0.0387 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER0.422 INCHES MINIMUM AND 0.453 INCHES MAXIMUM IN
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
50147InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
100775-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
50145InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
F1945InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
212301InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
50147-501InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SCB69389-4?
SCB69389-4 is a WASHER,FLAT.
What parts can replace SCB69389-4?
There are 10 known substitutes for SCB69389-4: 50147, 100775-1, 50145 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SCB69389-4?
SCB69389-4 is cataloged in the Federal Logistics Information System under NSN 5310-00-521-8475. 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: September 2026