| Lowenherz Thread Size Chart |
| The Lowenherz thread is a largely obsolete fine thread for screws of instruments and is based on the metric system. It is a symmetrical thread, not a buttress thread. |
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| Light Lamp Socket Threads Table |
| Lamp Base and Socket Shell Threads.—The “American Standard” threads for lamp base and socket shells are sponsored by the American Society of Mechanical Engineers |
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| Spark Plug Threads Sizes Table |
| Spark Plug Threads Sizes and Tapped Hole - The SAE Standard includes the following sizes: 7⁄8- inch nominal diameter with 18 threads per inch: |
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| Bolt Fastener Tightening Methods Review |
| Torque Control Method: Bolt tightening is controlled by a specific torque value. This is the most common method utilized. This is a reasonable way of tightening control and operation. |
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| Typical Elongation Common Bolting Materials |
| Indicated elongation figures (in thousandths of an inch) are for various percentages of yield strengths (y.s.) of different bolts with a 1 in. grip length. (Modulus of elasticity assumed to be 30,000 psi unless otherwise noted.) |
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