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DIN 5406 MB-6 ✓ 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,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 30.0 MILLIMETERS NOMINAL30.0 MILLIMETERS NOMINAL MM, outside_diameter: 49.0 MILLIMETERS NOMINAL49.0 MILLIMETERS NOMINAL MM, style_designator: FLAT EXTERNAL TEETH, material_thickness: 1.25 MILLIMETERS NOMINAL1.25 MILLIMETERS NOMINAL MM. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-071-0087, 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
DIN 5406 MB-6
NSN: 5310-01-071-0087
FSC: 5310
CAGE: 15526 — METRIC AND MULTISTANDARD COMPONENTS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter30.0 MILLIMETERS NOMINAL30.0 MILLIMETERS NOMINAL MM
outside_diameter49.0 MILLIMETERS NOMINAL49.0 MILLIMETERS NOMINAL MM
style_designatorFLAT EXTERNAL TEETH
material_thickness1.25 MILLIMETERS NOMINAL1.25 MILLIMETERS NOMINAL MM
NSN5310-01-071-0087
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DIN 5406 MB-6 · 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
•
STYLE DESIGNATOR: FLAT EXTERNAL TEETH
•
HOLE DIAMETER: 30.0 MILLIMETERS NOMINAL30.0 MILLIMETERS NOMINAL MM
•
MATERIAL THICKNESS: 1.25 MILLIMETERS NOMINAL1.25 MILLIMETERS NOMINAL MM
•
OUTSIDE DIAMETER: 49.0 MILLIMETERS NOMINAL49.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORFLAT EXTERNAL TEETH
HOLE DIAMETER30.0 MILLIMETERS NOMINAL30.0 MILLIMETERS NOMINAL MM
MATERIAL THICKNESS1.25 MILLIMETERS NOMINAL1.25 MILLIMETERS NOMINAL MM
OUTSIDE DIAMETER49.0 MILLIMETERS NOMINAL49.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
SSS736Interchangeable
interchangeable cross-reference
interchangeable
MB6Interchangeable
interchangeable cross-reference
interchangeable
A66M0Interchangeable
interchangeable cross-reference
interchangeable
CBNM-GInterchangeable
interchangeable cross-reference
interchangeable
72CM028Interchangeable
interchangeable cross-reference
interchangeable
9102894Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DIN 5406 MB-6?
DIN 5406 MB-6 is a WASHER,LOCK.
What parts can replace DIN 5406 MB-6?
There are 8 known substitutes for DIN 5406 MB-6: SSS736, MB6, A66M0 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DIN 5406 MB-6?
DIN 5406 MB-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-071-0087. 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