DIN 127B zinc-plated split lock washers, made from through-hardened spring steel for metric fasteners. Sizes M6 to M20 fit standard bolts; the split-ring design maintains tension to prevent loosening under vibration and thermal cycling. Easy to install under the nut or bolt head. The bright zinc finish provides corrosion protection for indoor and moderate outdoor use. For safety-critical joints or high-strength fasteners (class 8.8+), consider alternative locking solutions.
Secure Your Assemblies with Professional Grade DIN 127B Split Lock Washers
Prevent fastener loosening and ensure the long-term integrity of your mechanical assemblies with our premium quality DIN 127 Type B Metric Split Lock Washers. Engineered from high-strength spring steel and coated with a durable zinc finish, these washers provide a reliable and economical solution for a wide range of industrial, automotive, and general-purpose applications.
How They Work:
Also known as helical spring washers, these components feature a unique split-ring design that exerts a continuous spring force when compressed under a nut or bolt head. This constant tension actively counteracts loosening caused by light to moderate vibration, thermal cycling, and material setting. The sharp, square-cut ends also bite into the mating surfaces, creating a mechanical lock that resists counter-rotation and keeps your fasteners secure.
Key Features & Benefits:
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VIBRATION RESISTANCE: The unique helical spring design applies constant pressure to the fastener assembly, effectively preventing loosening in applications subject to vibration and dynamic loads.
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PREMIUM MATERIAL: Manufactured from high-quality, through-hardened spring steel for maximum elasticity and durability, ensuring reliable performance over time.
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SUPERIOR CORROSION PROTECTION: A bright zinc-plated finish provides excellent corrosion resistance for indoor and moderate-duty outdoor applications, protecting against rust and extending component life.
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DIN 127B COMPLIANT: Precisely manufactured to meet the dimensional and material specifications of the globally recognized DIN 127 Type B standard, guaranteeing consistent fit and function.
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VERSATILE APPLICATION: An essential component for mechanics, technicians, engineers, and DIY enthusiasts. Ideal for use in machinery, automotive repair, construction, electronics, and general maintenance.
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EASY INSTALLATION: Simple to use with standard bolts, screws, and nuts. Place the washer under the nut or bolt head and tighten to the appropriate torque.
Application Guidance:
These DIN 127B washers are specifically designed for use with standard-strength metric fasteners (e.g., property class 4.6, 5.8, and 6.8). For safety-critical joints or applications using high-strength fasteners (class 8.8 and above), please consider alternative locking solutions such as wedge-locking washers or prevailing torque nuts.
Choose your required size (M6, M8, M10, M12, M14, M16, M18, M20) and pack quantity to get the exact hardware you need for your project.
Technical Specifications Table
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Specification
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Details
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Standard
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DIN 127, Type B (Square/Flat Ends)
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Material
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Spring Steel, Through-Hardened
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Finish
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Zinc Plated (Electroplated), Clear/Blue Chromate
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System of Measurement
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Metric
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Available Sizes
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M6, M8, M10, M12, M14, M16, M18, M20
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Dimensional Specifications (in mm):
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Metric Size
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For Thread
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Inner Diameter (d1) Range
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Outer Diameter (d2) Max
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Thickness (s) Range
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M6
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M6 Bolt
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6.1 - 6.5
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11.8
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1.5 - 1.7
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M8
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M8 Bolt
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8.1 - 8.5
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14.8
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1.9 - 2.1
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M10
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M10 Bolt
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10.2 - 10.7
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18.1
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2.05 - 2.35
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M12
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M12 Bolt
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12.2 - 12.7
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21.1
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2.35 - 2.7
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M14
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M14 Bolt
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14.2 - 14.7
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24.1
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2.85 - 3.2
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M16
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M16 Bolt
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16.2 - 17.0
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27.4
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3.3 - 3.7
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M18
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M18 Bolt
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18.2 - 19.0
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29.4
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3.3 - 3.7
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M20
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M20 Bolt
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20.2 - 21.2
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33.6
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3.8 - 4.2
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