Screw thread profile with an asymmetric square/slanted shape
Buttress thread forms, also known as sawtooth thread forms[1] or breech-lock thread forms.[2] are screw thread profiles with an asymmetric shape, having one square face and the other slanted. They are most commonly used for leadscrews where the load is principally applied in one direction. The asymmetric thread form allows the thread to have low friction and withstand greater loads than other forms in one direction, but at the cost of higher friction and inferior load bearing in the opposite direction. They are typically easier to manufacture than square thread forms but offer higher load capacity than equivalently sized trapezoidal thread forms.
^CN101571035B - Sawtooth thread of drill pipe joint - Google Patents
^French, Thomas Ewing (1918-01-01). A Manual of Engineering Drawing for Students and Draftsmen. McGraw-Hill book Company, Incorporated.
Buttressthread forms, also known as sawtooth thread forms or breech-lock thread forms. are screw thread profiles with an asymmetric shape, having one...
"unwrapping" one revolution of a thread. This is most easily described for a square or buttressthread as the thread angle is 0 and has no bearing on...
V-threads, the isosceles triangle is, more specifically, equilateral. For buttressthreads, the triangle is scalene. The theoretical triangle is usually truncated...
British thread standard with 55° profile. Buttressthread Engineering tolerance Garden hose thread List of drill and tap sizes National pipe thread (NPT)...
engineering, the thread angle of a screw is the included angle between the thread flanks, measured in a plane containing the thread axis. This is a defining...
valves, scissor jacks and lead screws in machines like lathes. (g) Buttressthread - This is used in high-load applications in which the load force is...
provides the seal. AN thread British Standard Pipe thread (BSP) Buttressthread Fire hose thread Garden hose thread National pipe thread (NPT) Nipple (plumbing)...
square thread or buttressthread is used, because it has the lowest friction and wear. In technical applications, such as actuators, an Acme thread is used...
screw thread, often shortened to thread, is a helical structure used to convert between rotational and linear movement or force. A screw thread is an...
with an attached length of thread. There are numerous types of suture which differ by needle shape and size as well as thread material and characteristics...
welded to the cast-steel gearbox. The elevating screw is provided with buttressthread supported with single-acting thrust ball-bearing having a spherical...
for pipe threads conforming to ISO 228 part 1 Active DIN 76-3 Runouts, Undercuts for Trapezoidal Threads, ButtressThreads and Knuckle Threads and other...
motion, vastly speeding up the process of adjustment. Common thread types are Acme and buttress. Traditional woodworking workbench vises are commonly either...
evergreen trees which grow quickly, and as they mature their roots form buttresses, rising up near the trunk and radiating out along the surface of the ground...
distinction between waterfall ice and alpine climbing; the Moonflower Buttress (WI6 M7 A2, 1983) in the Alaska Range applied the highest levels of ice...
political organization of the 2004 campaign." Overall, he presents evidence to buttress the Internet's benefits. The book has received mixed critical reviews....
pragmatic perspective, resistance to tyranny and protection to weak. The buttresses can be functioning as a viewing platform for the parade of the troops...
hydro-pneumatic recoil system and an interrupted thread breech block; the latter had a mushroom head and stepped-up buttress-type screws. Two carriages have been...
function of buttress roots: a comparative study of the anchorage systems of buttressed (Aglaia and Nephelium ramboutan species) and non-buttressed (Mallotus...
motion, vastly speeding up the process of adjustment. Common thread types are Acme and buttress. A twin-screw vise allows for secure clamping of larger workpieces...
removed. A continuous sloping unreinforced concrete buttress encircles what remains. The buttress is 100 feet 4 inches (30.6 m) square at its base, 64 feet...
miter cuts. Precision blade gives accurate cuts with a smooth finish. Buttress blade provides faster cutting and large chip loads. Claw tooth blade gives...
A1, A2, A3, A4, A5 and up to A6 (for "new wave"). See C-grade. Abalakov thread A type of anchor used in abseiling especially in winter and in ice climbing...
bleak stone. Some architect had reached far back into history for these buttressed walls and dark hangings, she thought. The arched ceiling stood two stories...
144°58′26″E / 37.830594°S 144.973752°E / -37.830594; 144.973752 Four large buttress statues of the Shrine representing Peace and Goodwill, Patriotism Justice...