Knox FDC Lock Operating Instructions Download Page 2

After set screws have been 

secured, insert a ball bearing 

slightly larger than the Allen 

hole into the screw head 

and use punch to hammer 

into place. Alternatively, 

fill the screw head with a 

permanent epoxy material. 

This will virtually eliminate 

removal attempts.

FDC BRASS ADAPTER RECOMMENDED INSTALLATION PROCEDURE 

Theft of items containing materials such as copper and brass are a growing problem for property owners and 

firefighters. Knox recommends taking the following steps to ensure the entire FDC assembly is permanently 

secured to the pipe thread on the building to reduce risk of theft and vandalism of the housing and pipe.
This procedure involves installing one or more 5/16"-18 Allen set screws and a special permanent adhesive to 

secure the FDC Brass adapter to the pipe thread on the building. 

NOTE: 

To minimize potential of pipe 

being stolen, attach a clamp 

on the backside of install wall.

Adapter Lip

 

Pipe Wall

Siamese Brass

Spot Drill Detent

Use Letter F drill bit to drill a 

hole entirely through the brass 

adapter lip, approximately 

1/2" from lip edge. One hole 

provides extra security. Three 

holes spaced 120° apart will 

provide much better security.

Tighten and position FDC 

brass adapter on pipe.

Use 1/4" drill bit to spot drill 

through the set screw holes 

in adapter and into pipe 

approximately 1/16" deep.

Do not drill too deep  

and pierce pipe.

  

Clean drill holes of debris 

then place a small amount of 

remaining Permabond HM162 

in hole and on set screws, 

then install set screws, 

securing firmly with a 5/32" 

Allen wrench.

Tap threads in the holes using 

a 5/16"-18 thread tap. 

Clean pipe threads thoroughly 

with solvent and wire brush. 

Dry completely. NO grease 

or oil can be present on the 

pipe threads in order for 

adhesive to work properly.

Apply Permabond

®

 HM162 to 

threads on both the adapter 

and pipe. Coating should 

be thin and completely 

coat the threads.

OPE-KBSPEC-0024-C

1601 W. DEER VALLEY RD. PHOENIX, AZ 85027   |   

T.

 800-552-5669   |   

F.

 623-687-2290   |   [email protected]   |   

KNOXBOX.COM

©Knox Company. All rights reserved.

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KNOX FDC LOCK

OPERATING INSTRUCTIONS

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