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J Series Semi-Trailer Kingpin Lock

A semi-trailer lock, the J Series locks onto the kingpin on a dropped semi-trailer to prevent hookup.

The lock is automatically secured when pushed onto the kingpin and the key can be withdrawn only in the locked position. Its bright red finish signals drivers not to back into lock. The deadlocking bolt functions feature a deadlocking bolt controlled by key to prevent bolt from being shimmed or jimmied. A key is necessary both to secure and remove deadlocking bolt models.


  • Case– Structural steel, machined solid steel head(s) heliarc welded to center body. Single head 8" x 8 3⁄4" x 4", weight approx. 15 lbs. Double head 11 1⁄2" x 3 3⁄4" x 4". Weight approx. 19 lbs.
  • Latch projection– 15⁄32"
  • Cylinder(s)– Brass with interchangeable core
  • Finish– Case, bright red crinkle finish; cylinders and cores 606 

2P Series Push Lock for Filing Cabinets


  • Material– Parts are solid brass; phosphor bronze springs.
  • Dimensions– See illustration and table.
  • Finish– 2P series 626 (satin chrome) standard finish. The 2P series incorporates the BEST interchangeable core and requires special cabinet preparation. It may be keyed individually, keyed alike, masterkeyed or grand–masterkeyed with other BEST removable core products

2S Series Push Lock for Sliding Doors


  • Case– Extruded brass
  • Width– 1 1⁄2"
  • Thickness– 23⁄32"
  • Inside Face Plate– 2 3⁄4" x 7⁄8" ; hole spacing 1 7⁄8"
  • Detachable Face Plate– 1⁄16" x 1 1⁄8" x 2 3⁄4" ; hole spacing 2 3⁄16"
  • Finish– Base finish, 626, supplied unless otherwise specified

3S Series Sliding Panel Lock

Operation– The stainless steel strap mounts permanently on the inner sliding panel. When panels are closed, the tongue of the strike strap extends beyond the edge of the outer panel. To lock panels, slide lock housing as close to overlapping panel edge as possible and lock by turn of key. Key is removable in locked position only.

Specifications Strike:

  • Strap– Stainless steel, 1⁄2" wide
  • Lock housing– Aluminum ANSI 156.11, Grade 1
  • Finish– 627 aluminum only

4S Series Sliding Door Cylinder

The 4S Series locking cylinder for sliding doors offers quality security and masterkey versatility by integrating a modified BEST interchangeable core into the actual locking mechanism. This machined solid brass cylinder is designed for use on display cabinets, window displays or other storage areas that are closed by sliding panels of glass, plastic, wood, etc.


  • Cylinder– Head diameter– 1 3⁄8", cylinder projection– 3⁄8". Fits 1 3⁄16" diameter hole in door. Machined from solid brass.
  • Clamp Plate– Stainless steel.
  • Mounting– Cylinder attached with 2 stainless steel screws. Supplied with 2 clear vinyl washers for mounting on glass doors.
  • Door thickness– 1⁄4"
  • Finish– 625 bright chrome supplied standard. Available in 605, 606, 626.
  • Core– Special 7 pin core prevents complete removal of core from cylinder. Machined from solid brass. 6C or 6CT core is required.
  • Operation– Core body blocks door from sliding open when in the locked position. To unlock, insert key to retract locking lug and pull core forward to the unlocked position. 6C core must be ordered if key is to be removable in the locked or unlocked position. 6CT core must be ordered if key is to be removable only in the locked position. 

KRD Series Key Retaining Device

The key retaining device is an effective tool for improving key control. With a key retaining device, a release key is inserted into the retaining device and rotated. The rotation of this key both releases the retained key and traps the release key. The release key remains trapped until the retained key is returned and rotated. When this happens, the release key can be extracted, but the retained key is trapped. These retaining devices establish accountability for important keys (ex: master keys, emergency bypass keys, etc.) and dramatically reduce both human mistakes and risk exposure for higher level keys. These effective put-and-take systems act as mechanical sign-out sheets. When the cores are installed, the standard #10 front mounting screws are concealed. Additional 1/4-20 threaded mounting holes are provided in the back of each KRD case.

  • KRD-2 BEST Core Model (Cores and Keys not included) Two core retaining device with one retained core and key and one release core and key. Accepts 5, 6 and 7 pin BEST cores.
  • KRD-2H Hybrid (Cores and Keys not included) The Hybrid KRD is used to combine, in one device, a BEST core with another manufacturer's core. Two models are currently available: Sargent RC and Schlage FSIC (contact your local BEST office for information on other models).
KRD Options
  • S Switch
    Internal low-voltage SPDT switch rated at 5A, 125VAC supplied with a 3-wire, 36" jacketed cable. This switch can be used to connect any KRD to an annunciator, control circuitry, a camera, an access control system with alarm monitoring capability, a linked output, etc.
  • SS Security Seal(s) (Seals not included)
    Allows you to use a breakable seal on a retained key to provide a simple and effective visual indicator that this key has NOT been used.


BEST has represented tough, versatile, high-quality locks for more than 90 years. Today, BEST leads the industry with bold, innovative designs and smart solutions for your business and your customers.



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