In mechanical engineering, the thread angle of a screw is the included angle between the thread flanks, measured in a plane containing the thread axis.[1] This is a defining factor for the shape of a screw thread. Standard values include:
Name
Code
Angle
Profile
Standards
Most V-threads (including ISO, NPT and UTS)
M
60°
DIN 13 / ISO ? / ASME/ANSI ?
Whitworth threads
W
55°
DIN 49301 / BS ?
British standard pipe thread
G
55°
DIN / BS / EN / ISO 228-1 / ISO 7-1
National Pipe Thread
NPT
60°
ASME B1.20.-1983 Pipe Threads, General Purpose, Inch
engineering, the threadangle of a screw is the included angle between the thread flanks, measured in a plane containing the thread axis. This is a defining...
friction induced by the threadangle. Acme threads are generally also stronger than square threads due to their trapezoidal thread profile, which provides...
Acme thread. A modified square thread with a small 5° threadangle is sometimes used instead, which is cheaper to manufacture. (f) Acme thread - With...
Pipe Thread series have the same 60° included angle as Sellers thread. On the other hand, for sealing capability, tapered (pressure-tight) threads have...
Pipe Threads Form Filter thread Metric: M Profile Thread Form National Thread Form Nut (hardware) Tapered thread Tap and die ThreadangleThread pitch...
threads consist of a symmetric V-shaped thread. In the plane of the thread axis, the flanks of the V have an angle of 60° to each other. The thread depth...
standard specified a 55° threadangle and a thread depth of 0.640327p and a radius of 0.137329p, where p is the pitch. The thread pitch increases with diameter...
interfere with the thread, making this form resistant to debris and thread damage. Knuckle threads with a flat 30 degree flank threadangle are standardized...
Association in 1884 with a threadangle and depth based on the Swiss Thury thread, it was adopted by the Association in 1903. The Thury thread was different in...
systems for designating thread types (metric, unified, Whitworth, etc.). Threading can be specified by diameter, pitch, angle, length and fit tolerances...
intrinsic efficiency than trapezoidal threads (Acme or metric trapezoidal). Due to the lack of a threadangle there is no radial pressure, or bursting...
gauges AN thread British standard brass thread British Standard Whitworth Garden hose thread National pipe thread Panzergewinde ThreadangleThreaded pipe...
thread, such as a hand-turned thread from a lathe. This tool is meant for a best-approximation measurement to a known thread standard. Threadangle Thread...
(steel conduit thread) Piping Plumbing Screw thread Tap and die Threadangle United States Standard thread NPT Vs. NPTF Taper Pipe Threads Newman Tools...
Brass Thread is an imperial unit based screw thread. It adopts the Whitworth thread form with a pitch of 26 threads per inch and a threadangle of 55...
is lead of the screw or gear rm is mean radius of the screw thread or gear The helix angle is crucial in mechanical engineering applications that involve...
Standard Fine (BSF) thread was introduced in 1908 because the Whitworth thread was too coarse for some applications. The threadangle was 55°, and the depth...
symmetric V-shaped thread. In any plane containing the thread axis, the flanks of the V have an angle of 60° to each other. The outermost 1⁄8 and the innermost...
walls of the conduit are usually relatively thin, the thread depth is limited. Thus a threadangle of 80° is used. The Verband der Elektrotechnik, Elektronik...
interchangeable due to the different flare angles. Mixing them can cause leakage at the flare. Note that AN threads are different for bolts and fittings. In...
standard specified a 55° threadangle and a thread depth of 0.640327p and a radius of 0.137329p, where p is the pitch. The thread pitch increased with diameter...
consists of a male threaded fastener (e. g., a bolt) that captures and joins other parts, secured with a matching female screw thread. There are two main...
rather than a 55 degrees angle. All sizes 1⁄4 inch and larger use 26 threads per inch (tpi), making them similar to 1 mm ISO threads, which are 25.4 per inch...
Point Cutting Tools". Scribd. Retrieved 23 November 2019. "Rake Angle Versus Material". Thread Check Inc. Retrieved 24 November 2019. "Machining & Metrology...