Door Hardware Slang and Abbreviations – Mystery Solved! | Discount Door Hardware

door hardware slang

Door Hardware Slang and Abbreviations – Mystery Solved!

Like every industry, the door hardware industry has its share of slang, abbreviations and idioms!

Most manufacturer product boxes are adorned with product numbers and seemingly meaningless letters, but many of those letters do have significance! If you’ve been wondering what some of those letters mean, check out the list below. Here are some of some of the most common:

NRP – frequently found on boxes of hinges, this abbreviation means that each hinge is being provided with a “Non-Removable Pin”.

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CRASH BAR – this is layman’s term for a “panic device” or “fire exit device.”

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KIK – this nifty little acronym actually means “Key-In- Knob”. These lock cylinders are designed to fit into knob type cylindrical locksets.

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KIL – perhaps just as nifty as KIK, this eerie little acronym confirms that the lock cylinder is a “Key-In- Lever” type and is therefore suitable for installation into a lever type cylindrical lockset.

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TBSRT – often found on the boxes of LCN door closers, these letters signify that the closer comes complete with “Thru-Bolts and Self-Reaming (drilling) Tapping Screws.”

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RW/PA – frequently found on boxes of door closers from a variety of manufacturers, these letters specify that the box contains the accessories to mount the closer in either “Parallel Arm” or “Regular Arm” applications.

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TBWMS – another alphabetical mystery found on boxes of door closers from numerous manufacturers, these letters confirm that the door closer is being supplied complete with “Thru-Bolts, Wood Screws and Machine Screws” which makes it a very versatile product suitable for a variety of possible applications.

SLIM – frequently found on boxes of LCN and Falcon door closers, this word actually means what it says; the closer has been supplied with a “Slim” style cover instead of a full cover.

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KNC – if you find these letters embossed or stamped into a threshold, sweep or similar item, it means the product has been manufactured by “KN Crowder Manufacturing” from Burlington, Ontario.

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R/V – often found on the boxes of Von Duprin exit device trims, these letters signify that the trim is compatible with “Rim or Vertical Rod” type exit devices.

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LHR/RHR – commonly found on the cartons of exit devices from a variety of manufacturers, these letters are confirming that the exit device is a handed product and that it is for use on either a “Left Hand Reverse” door or a “Right Hand Reverse” door as specified.

LH/RH – sometimes found on boxes containing door closers, this abbreviation confirms that the closer is a handed product and must be installed on either a “Left Hand” door or a “Right Hand” door as specified.

DOOR CLOSURE – is a widely misused term to describe a “door closer.”

HYDRAULIC PUMP ARM – is another widely misused term to describe a “door closer”.

PUMP STOPPER ARM – yet another widely misused term to describe a “door closer”.

KA – these letters are sometimes seen on boxes containing locksets, deadbolts or padlocks. KA means the lock has been “Keyed Alike” to another specific lock or that it is part of a larger keyed-alike group of locks.

KD – these letters are sometimes seen on boxes containing locksets, deadbolts or padlocks. KD means the lock has been “Keyed Differently” from any other lock or group of locks and that it does not belong to any specific group.

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DOOR STOPPER – whenever someone asks us for one of these, we ask them to send a photo! You wouldn’t believe what some people have referred to as a “door stopper”!

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