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For a key to function, the shaft and rotating machine element must have a keyway and a keyseat, which is a slot and pocket in which the key fits. The whole system is called a keyed joint . [ 1 ] [ 2 ] A keyed joint may allow relative axial movement between the parts.
Key relevance cannot be deduced from a key code, since the key code merely refers to a central authoritative source for designed shapes and sizes of keys. Typical modern keys require a key relevance of approximately 0.03 to 0.07 millimetres (0.0012 to 0.0028 in) (accuracy within 0.75% to 1.75%) in order to operate. [4]
A hex key (also, hex wrench, Allen key and Allen wrench, Unbrako or Inbus) is a simple driver for bolts or screws that have heads with internal hexagonal recesses . Hex keys are formed from a single piece of hard hexagonal steel rod, having blunt ends that fit snugly into similarly shaped screw sockets.
The maximum voltage allowed by the standard is 1000 V DC or AC; the maximum current, 800 A; and the maximum frequency, 500 Hz. The ambient temperature range is −25 °C to 40 °C. [3] There is a range of plugs and sockets of different sizes with differing numbers of pins, depending on the current supplied and number of phases accommodated.
A tubular lock and key. A tubular pin tumbler lock, also known as a circle pin tumbler lock, radial lock, or the trademark Ace lock popularized by manufacturer Chicago Lock Company since 1933, is a variety of pin tumbler lock in which a number of pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
ISO 2491:1974 Thin parallel keys and their corresponding keyways (Dimensions in millimetres) [Withdrawn without replacement] ISO 2492:1974 Thin taper keys with or without gib head and their corresponding keyways (Dimensions in millimetres) [Withdrawn without replacement] ISO 2493 Paper and board — Determination of bending resistance
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A six-pin interchangeable core with an 'A' keyway and individual chamber capping in an ANSI/BHMA 626 satin chrome finish. An interchangeable core or IC is an adaptable locking key cylinder, which can be rapidly exchanged in the field via the use of specialized "control keys".
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