enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. U-bolt - Wikipedia

   en.wikipedia.org/wiki/U-bolt

   A U-bolt is a bolt in the shape of the letter U with screw threads on both ends. U-bolts have primarily been used to support pipework. Because of this, U-bolt sizes are given in pipe measurements. A U-bolt is described by the size of pipe it is supporting. For example, a 40 Nominal Bore U-bolt would be asked for by pipe work engineers, and only ...

3. Unified Thread Standard - Wikipedia

   en.wikipedia.org/wiki/Unified_Thread_Standard

   It is the main standard for bolts, nuts, and a wide variety of other threaded fasteners used in these countries. It has the same 60° profile as the ISO metric screw thread, but the characteristic dimensions of each UTS thread (outer diameter and pitch) were chosen as an inch fraction rather than a millimeter value.

4. Rack unit - Wikipedia

   en.wikipedia.org/wiki/Rack_unit

   Rack with sample component sizes including an A/V half-rack unit. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44.45 mm). [1] [2] It is most frequently used as a measurement of the overall height of 19-inch and 23-inch rack frames, as well as the height of equipment that mounts in these frames, whereby the height of the frame or equipment is expressed ...

5. 19-inch rack - Wikipedia

   en.wikipedia.org/wiki/19-inch_rack

   There is little evidence that the dimensions of these early racks were standardized. Telephone equipment racks (1923) The 19-inch rack format with rack-units of 1.75 inches (44.45 mm) was established as a standard by AT&T around 1922 in order to reduce the space required for repeater and termination equipment in a telephone company central ...

6. United States Standard thread - Wikipedia

   en.wikipedia.org/wiki/United_States_Standard_thread

   The metric standard used the same thread geometry as the USS standard but differed in that the dimensions and pitch were based on metric units. In 1906, the A.L.A.M developed what would be the SAE thread standard for threaded fasteners based on the USS standard but with a finer thread pitch. [6] [7]

7. List of thread standards - Wikipedia

   en.wikipedia.org/wiki/List_of_thread_standards

   Standard Name Type Example ASME B1.1-2003 (R2018) Unified Inch Screw Threads (UN and UNR Thread Form) V Thread Form: 1 ⁄ 4 ″-20 UNC #4-40 UNC ASME B1.5-1997 (R2014) Acme Screw Threads: Trapezoidal Thread Form: Tr 60×9 ANSI/ASME B1.9-1973 (R2017) Buttress Inch Screw Threads: Breech-Lock Thread Form: ASME B1.10M-2004 (R2014) Unified ...