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2. Bearing pressure - Wikipedia

   en.wikipedia.org/wiki/Bearing_pressure

   Type of bushing Maximal circumferential sliding speed Acceptable bearing pressure (MPa) Self-lubricating bushels 7 to 8 m/s 13 m/s for graphite graphite: 5 lead bronze: 20 to 30 tin bronze: 7 to 35 Composite bushing, Glacier 2 to 3 m/s acetal: 70 PTFE: 50 Polymer bushing 2 to 3 m/s: 7 to 10

3. List of thread standards - Wikipedia

   en.wikipedia.org/wiki/List_of_thread_standards

   Breech-Lock Thread Form: ASME B1.10M-2004 (R2014) Unified Miniature Screw Threads: V Thread Form: 0.60 UNM ANSI/ASME B1.11-1958 (R2016) Microscope Objective Thread: V Thread Form ASME B1.13M-2005 (R2015) Metric Screw Threads: M Profile: V Thread Form ASME B1.15-1995 (R2003) Unified Inch Screw Threads (UNJ Thread Form) V Thread Form ASME B1.20.1 ...

4. National pipe thread - Wikipedia

   en.wikipedia.org/wiki/National_pipe_thread

   The sealants, where used, are typically thread seal tape thread sealant or a thread seal paste pipe dope (sometimes similar in composition to plumber's putty). Because the thread body is tapered (0.75 in/ft or 62.5 mm/m), a larger diameter keeps compressing into a smaller diameter and finally forms a seal (no clearance remains between the ...

5. Stem (bicycle part) - Wikipedia

   en.wikipedia.org/wiki/Stem_(bicycle_part)

   A threadless stem should match the outside diameter of the steerer tube; a reducing shim may be employed to match a 28.6 mm (1 + 1 ⁄ 8 in) stem to a 25.4 mm (1 in) steerer tube. On the other hand, a quill stem must be sized to match the inner diameter of the steerer tube.

6. Screw thread - Wikipedia

   en.wikipedia.org/wiki/Screw_thread

   This additional truncation is achieved by using a slightly larger tap drill in the case of female threads, or by slightly reducing the diameter of the threaded area of workpiece in the case of male threads, the latter effectively reducing the thread's major diameter. In the case of female threads, tap drill charts typically specify sizes that ...

7. ISO metric screw thread - Wikipedia

   en.wikipedia.org/wiki/ISO_metric_screw_thread

   A metric ISO screw thread is designated by the letter M followed by the value of the nominal diameter D (the maximum thread diameter) and the pitch P, both expressed in millimetres and separated by a dash or sometimes the multiplication sign, × (e.g. M8-1.25 or M8×1.25). If the pitch is the normally used "coarse" pitch listed in ISO 261 or ...