Industry News

Home / News / Industry News / UL listed for 3 hour fire rated Universal Automatic Flush Bolts

UL listed for 3 hour fire rated Universal Automatic Flush Bolts

Dec. 2025, 02

Specifications

  • cUL/UL listed for 3 hour fire rated doors

  • UL 10B  and 10C fire tests for door assemblies

  • ANSI/BHMA A156.3 

  • Finishes: US3, US10B and US26D

Features

  • Simple Door preparation

  • Easy Installation

  • Requires two (2) 1-1/8” Diameter holes and simple rectangular faceplate preps

  • Dual use for metal and solid wood doors

  • No cut outs on inactive door

  • Non-handed

  • Ideal for wood veneer doors as smaller profile adds stability to the door 

Use:

  • These bolts are installed at the top and bottom of fire rated doors on the inactive leaf

  • Top and bottom bolts will automatically retract when the active door is opened

     

UL listed for 3 hour fire rated Universal Automatic Flush Bolts

UL listed for 3 hour fire rated Universal Automatic Flush Bolts


Genaral Information:

The K8005 Automatic Flush Bolt uses a standard latch bolt prep fixture with 1-1/8"[28.6]diameter drill bit.For beveled doors,the face of the K8005 pivots,making the bolt suitable for all door edges.

Trouble Shooting:

Maintenance Tips:

1)1.If the operation is stiff or the cam sticks,the drilled holes are not quite perpendicular and/or do not meet adequately.In this case,it may be necessary to break the inside edge of the intersecting holes with a smaller drill,or a round file.

2)If breaking the edge does not improve operation check to see that the two assemblies are mated correctly as stated in Step 2 of the installation instructions.

The K8005 will provide years of trouble free operation.Periodic greasing with a moly or lithium based grease will extend the life of the K8005.


Preparation Tips:

1.Do not exceed 5/32"[4]depth when mortising the two rectangles.

Greater depths will hinder the mating of the two assemblies.

2.The 1-1/8"[28.6]holes must be drilled perpendicular to the door edges

as well as parallel with the door faces.

3.Undercut Doors:

3.1 Prep are top bolt as suggested.

3.2 Prep only vertical mortise of bottom bolt.

3.3 Undercut door to required amount.

3.4 Redrill vertical mortise the same amount as undercut.

3.5 Prep horizontal mortise per template.


Bolt Installation:

1.Remove Tie and install Bolt Housing.

2.Install Cam Housing into grooves of Bolt Housing.Secure Trim Plate

with 2 ea.#8 APS.

Note:If Cam Housing rotates,it is not engaged into the Bolt Housing.

3.Adjust Bolt Head 0"to 1/2"[12.7]above Bolt Head Guide.Secure with

2 ea.#8 APS.

UL listed for 3 hour fire rated Universal Automatic Flush Bolts

UL listed for 3 hour fire rated Universal Automatic Flush Bolts


In order to make our products more competitive and enhance customers confidence, we have obtained the following product quality certifications:

UL Certificated R41359 and CE for door closer,

UL Certificated R41361 ,SA46258 for panic exit device,

UL Certificated R41383 and EN1935:2002 for Hinges,

UL Certificated R41710 for American and lock

CE for Mortise lock

EN1906:2012 for Handles,

EN12209:2016 for Locks and so on.




Latest News

Hot Products

Let our team help you select the right product

Talk to one of our Door Hardware specialists, we can help you with all your Door Hardware needs from the ground up.

Let us help with your next Door Hardware project.

INQUIRE NOW