cotter pin


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cotter pin

Machinery
1. a split pin secured, after passing through holes in the parts to be attached, by spreading the ends
2. a tapered pin threaded at the smaller end and secured by a nut after insertion

Cotter Pin

 

a wire strip semicircular in cross section and bent approximately in half. Cotter pins are used to fasten lightly stressed, coupled parts or to prevent nuts from loosening. After a cotter pin is inserted through a hole, its ends are separated. Half of the pin is longer than the other for convenient separation. Cotter pins are made of carbon steel.

cotter pin

[′käd·ər ‚pin]
(design engineering)
A split pin, inserted into a hole, to hold a nut or cotter securely to a bolt or shaft, or to hold a pair of hinge plates together.

cotter pin

cotter pin: above, below, installation
A metal pin used for fastening; the split ends which project beyond the pin hole are bent back from the axis of the pin.

cotter pin

cotter pinclick for a larger image
A type of split pin used to safely secure a castle nut or a clevis pin. It is formed by doubling a piece of wire, semicircular in cross section, to form a loop at one end. After insertion in a hole or a slot in a nut and through mating crosswise holes in a bolt, the ends of the pins are bent to hold them in place. This fastener is widely used in locations where service inspection is difficult and failure would be disastrous. They are also used to prevent relative motion or sliding. Also called a cotter key.
References in periodicals archive ?
4 of TM 9-2355-318-23-3 on how to remove the C-clip, Item 9, and the latch pin, Item 10, and how to replace them with retrofit latch and cotter pins.
Prevent that damage by making sure the retaining nut and cotter pin are installed on the outside of the shackle, facing away from the ramp.
Part NSN Bracket assembly 2590-01-473-2719 Ring spacer 5365-01-473-0415 Ring spacer 5365-01-473-0409 Connecting link 3040-01-472-7745 (M939/A1 kit only) Connecting link 3040-01-472-7747 (M939A2 kit only) Straight pin 5315-00-904-1634 Cotter pin 5315-00-011-9120 Cotter pin 5315-00-012-0123 Plain hex nut (2) 5310-00-891-1733 Straight pin 5315-00-140-1938 Rod end clevis 5340-00-664-7597 Machine bolt (2) 5306-01-123-0891
The wrong way to remove the blade pin is to use channel lock pliers or diagonal wire cutters to extract the cotter pin.
A&I 3171 (SSN) and TZ0856 (SSBN/SSGN) require ship's force to install nylon bushings on the COM breakers to isolate the cotter pin from the metal stiffener.
The metal interlock bars are then connected to the circuit breaker handles with a metal cotter pin and a thumbscrew thus enabling the exposed interlock bars to become energized.
The FAA has revised an existing AD applicable to certain Boeing 777-200 series aircraft that currently requires repetitive visual inspections of the side struts and drag struts on the main landing gear (MLG) to determine the presence and condition of the nut and cotter pin of the lock link mechanism.
Tenders are invited for Set Of Split Cotter Pin For Coc-Co Bogie Comprising Of 6 Items 104 Nos Drg.
Ellison noticed that a cotter pin was missing on the servo input for the tail rotor.
CSX Mainline Track Inspection Kingston to Selkirk Department of Transportation and Federal Railroad Administration track inspectors examined approximately 43 miles of track and five switches along the CSX mainline between Kingston and Selkirk and found 14 non-critical defects, including an insecure switch heel; loose and missing fasteners on guard rails, loose and missing switch bolts, missing cotter pins, a loose switch point stop, and an improper emergency notification sign at a crossing.
The market information includes the total market size for metal fasteners as well as the market size and trends for the following kinds of products: Aluminium fasteners Copper nuts, screws and bolts Copper cotter pins, cotters and other unthreaded fasteners Copper tacks, staples, nails and drawing pins Copper washers Other copper fasteners Iron and steel coach screws Other iron and steel wood screws Iron and steel screw hooks and screw rings Iron and steel self-tapping screws Iron and steel lock and spring washers Other iron and steel washers Iron and steel cotter-pins and cotters Iron and steel nuts Iron and steel rivets Iron and steel tacks, staples, nails, corrugated nails and drawing pins Other iron and steel fasteners