Thread

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THREAD. A figurative expression used to signify the central line of a stream or water course. Harg. Tracts, 5; 4 Mason's Rep. 397; Holt's R. 490. Vide Filum aguae; Island; Water course; River.

References in periodicals archive ?
[R.sub.S] - relative strength if nut to screw threads [MPa]
Employing six people, the company has shifted its focus from eyeglasses to miniature screw threads for precision instruments.
* Hanger bolts feature large screw threads on one end and bolt threads on the other.
As a control to evaluate the effect of screw threads on the polyurethane foam, a smooth pin of the same root diameter as the 6.5 mm screw was evaluated for its resistance to displacement, and the results compared to those of the 6.5 mm cancellous screw.
Multiple screw thread sizes and lengths are available.
Extruded TFE Tubing is offered in standard and custom TFE, FEP, and PFA formulations in plain and highly flexible corrugated and convoluted (screw thread) styles with plain or cuffed ends.
Today, you can buy a bolt in Los Angeles and a nut in Boston and they will fit together perfectly because of screw thread standards.
The continuous thread finishes 33-400, 38-400 and 45-400 will accept either a standard screw thread or a child-resistant closure, while the 33 mm, 38 mm and 45 mm tamper-evident finishes will accommodate a snap-on style closure.
The typical thread form tool is built to fit a range of screw thread sizes.
When defining a screw thread, one must consider separate definitions for an external thread (screw or bolt) and an internal thread (nut).