* World-wide most commonly used type thread * Characterized by its major diameter and its pitch * Designated by the letter M followed by the value of the nominal diameter and the pitch, both expressed in millimetres and separated by the multiplication sign '×' * NPT Thread = National Pipe Thread
* Taper rate for all NPT threads is 1/16
* The taper on NPT threads allows them to form a seal when torqued as the flanks of the threads compress against each other, as opposed to straight thread fittings
* PG Thread = Panzer-Gewinde (also Panzer-Rohr-Gewinde) * German thread type * Depth of thread smaller than NPT or Metric, but larger flank angle Part Number Index sorted By Thread Types & Sizes: Metric Threads NPT Threads PG Threads ---- TORQUE RECOMMENDATIONS FOR STRAIN RELIEF FITTINGS
Torque in inlb (Nm)
METAL STRAIN RELIEF FITTINGS PLASTIC STRAIN RELIEF FITTINGS DOME NUTS THREAD AND LOCK NUTS DOME NUTS THREAD AND LOCK NUTS PG 7, M12x1.5 36.9 (4.17) 55.3 (6.25) 14.4 (1.62) 22.1 (2.50) PG 9, PG 11, M16, PG 13.5, 3/8" NPT, 1/2" NPT, M16x1.5, M20x1.5 36.9 (4.17) 55.3 (6.25) 22.1 (2.50) 33.2 (3.75) PG 16, 1/2"NPT-E 44.2 (5.00) 66.4 (7.50) 29.5 (3.33) 44.2 (5.00) PG 21, PG 29, PG 36, PG 42, PG 48, 3/4"NPT, 1"NPT, 1-1/4"NPT, 1-1/2"NPT, M25x1.5, M32x1.5, M40x1.5, M50x1.5, M63x1.5 59.0 (6.67) 88.5 (10.00) 44.2 (5.00) 66.4 (7.50)
Note: Torque for dome nuts was determined using a metal rod. It may vary for cable, depending on the crush resistance of the cable. We recommend to determine the actual torque empirically, testing the actual cable used. The values shown above are for reference only. Note: Nylon strain relief fittings installed in a threaded connection and exposed to elevated temperature should be retained with a sealant such as Locktite® to avoid a loose connection when temperature fluctuates. ---- Nema RatingsIP Ratings ---- provides cable products at competitive prices with exemplary customer service. Inventory in Excess of $25 Million allows the immediate shipment of almost all standard cable types and sizes. Cables, Wires & Accessories: Domestic & Imported
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13 threads per inch pitch is 1/13 = 0.077 inch ( pitch is distance between threads)
The pitch of a screw thread is a measure of how closely the threads are spaced. It can be expressed as the number of threads per unit length (32 threads per inch, for example) or as the distance between two threads ( such as .8 mm).
As I recall , 3 full threads is minimum engagement length
The tool for cutting internal threads is called a tap. A tool for cutting external threads is called a die.
knuckle threads are used in railway carriage couplings.
No, NPT threads are not compatible with NPSM threads. A pipe with NPT threads tapers slightly, while an NPSM-threaded pipe does not taper.
There are two main kinds of threads implementations: User-space threads and Kernel-supported threads. Mikaela
There is no such thing a PG-9, there is G, PG, Pg-13, and R. So therefore there is no such thing as PG-9. There is no such thing a PG-9, there is G, PG, Pg-13, and R. So therefore there is no such thing as PG-9.
Plumbing pipe threads are squared and conduit pipe threads are tapered.
Rated R and NC-17 is worst than PG or PG 13 combined.
pg
The long threads are called the warp and the shorter cross threads are called the weft.
pg may be " page " or PG is Paying Guests
National Pipe Threads or the Briggs Standard NFT = National fine threads NCT National corse threads ASAE America society of auto engineer threads etc
Internal threads are threads inside of a hole in something. Like a nut, for instance. External threads are threads on the outside of a cylindrical object. Like a bolt, for instance. hth, Steve
PG
The 'PG' of Lanoxin-PG stands for 'Paediatric and Geriatric'. See Related Links.