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Kershaw Knives was started in Portland, Oregon in 1974 when knife salesman Pete Kershaw left Gerber Legendary Blades to form his own cutlery company based on his own designs. [2] [3] [4] Early manufacturing was primarily done in Japan by Ichiro Hattori in Seki. [citation needed] In 1977, Kershaw became a wholly owned subsidiary of the KAI Group ...
Used by Hattori knives in their kitchen knives KD series. ZDP-189 is produced by Hitachi steel using the PM process. It contains 3% carbon and 20% chromium and contains tungsten and molybdenum. Used by several custom knife makers and factory makers including Spyderco and Kershaw in the limited run of the Ken Onion Shallot folders. The Henckels ...
The serrations seen on Aircrew Survival Egress Knife (ASEK) are intended to allow air crewmen to cut their way free through the relatively thin metal skin of a crashed helicopter or airplane. [3] Those knives that do include functional saw-teeth still suffer from lack of blade length, limiting the thickness of what can be cut when used as a saw ...
Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.
Sheet metal screws make excellent fasteners for attaching metal hardware to wood because the fully threaded shank provides good retention in wood. Twinfast screw: A Twinfast screw is a type of screw with two threads (i.e. a twin-start screw), so that it can be driven twice as fast as a normal (i.e. single-start) screw with the same pitch. [4]
The Dzus fasteners (gold coloured circular objects) fastening the cowling panels of the 1930s Hawker Hind. The Dzus fastener, also known as a turnlock fastener or quick-action panel fastener, [1] is a type of proprietary quarter-turn spiral cam lock fastener often used to secure skin panels on aircraft and other high-performance vehicles.
A knife switch is a type of switch used to control the flow of electricity in a circuit. It is composed of a hinge which allows a metal lever, or knife, to be lifted from or inserted into a slot or jaw. The hinge and jaw are both fixed to an insulated base, and the knife has an insulated handle. Current flows through the switch when the knife ...
A wingnut, wing nut or butterfly nut is a type of nut with two large metal "wings", one on each side, so it can be easily tightened and loosened by hand without tools. A similar fastener with a male thread is known as a wing screw [ 1 ] [ 2 ] or a wing bolt .