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| .gif) | Standard Locknut (N/AN): Most commonly used locknuts. Require a lockwasher and keyway in the shaft. "AN" series were for an old specification (11 threads per inch) and should be avoided. | |
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| .gif) | Heavy Duty Locknut (NH): Designed with greater thread length for greater strength. Tighter tolerances make this a common part for tapered roller bearings. | |
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| .gif) | Fine Thread Locknut (NI): Used by manufacturers who prefer not to use SAE-AFBMA metric modified series. These babies are "all English." Dimensions are based on the good king's foot. | |
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| .gif) | Left Hand Locknut (NL): Left-hand threads for high rotational speeds or as an opposite to a standard right-hand part for ease in tightening and loosening. | |
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| .gif) | Thin Section Locknut (NT): Provides necessary holding power in less space. Smaller OD and 50-75% less thickness result in dramatic weight reduction. Used in aircraft, electronics, and machine tools with small bearings. | |
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| .gif) | Standard Lockwashers (W): Most commonly used and least expensive. Note that the key is bent in the opposite direction of the tangs. | |
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| .gif) | Stainless Lockwasher (WS): Stainless steel version of the Standard Lockwasher Series. Passivated to remove impurities. | |
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| .gif) | Heavy Duty Lockwasher(WH): Heavier duty, thicker version with the key bent in the same direction as the tangs. | |
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| .gif) | Thin Section Lockwasher (WT): Smaller OD than Series "W" for holding power in limited space applications. Tangs are opposite of key. | |
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| .gif) | Fine Thread Lockwasher (WI): All English version with key manufactured in same direction as tangs. | |
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| .gif) | Metric Standard Locknut (KM): These metric locknuts fall under ISO-2982. Fully interchangeable with most standard metric locknuts. | |
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| .gif) | Metric Standard Lockwasher (MB): These metric lockwashers fall under ISO-2982. Key is shorter and is not bent. | |