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Two Piece Firewall Shield - 1/2-Inch Hole

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Part# 61-300
MFR Model# 61-300


Two piece firewall shield, 1/2-Inch hole and 3/4-Inch dimple for grommet.

Two piece shields for use over cables or wires with large end-fittings or existing installations. Single piece for use where the cable or wire may pass through the hole. Flat shields designed for use on wooden or composite firewalls using a fire resistant sealant to prevent leaks. Both types of shield available in flat or with dimple to accommodate rubber grommets up to outside diameter. Actual hole size in 2 piece shields is slightly larger than indicated to prevent chafing cable. Ream pilot hole in single piece shields oversize for the size grommet used. Use grommets that fit tightly around the cable or wire to insure a good seal. Shields may be installed with screws, bolts and plate nuts or rivet nuts. Install cable and grommet in firewall. Locate the shield to insure that it is centered on the cable - then drill attach holes in firewall. Shields predrilled with 5/32 mounting holes. If more than one cable passes through grommet fire resistant sealant must be applied to grommet.

**Caution: Any holes drilled in the firewall are potential source of carbon monoxide in the cockpit. Extreme caution must be exercised when installing firewall shields in your aircraft. They do not provide the nec essary seal around cables or wires to prevent carbon monoxide, smoke or fire from entering the cockpit. The shields are designed only to protect the sealing material (grommets/gaskets) from excessive heat.
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Does the job well.

Tony A Verified Purchase


January 26, 2023

Perfect, exactly what was needed.

Dave B Verified Purchase


October 28, 2022

Well well. This time they sent two sets. Still no answer on the other set they DIDNT send on a previous order.

William A Verified Purchase


March 8, 2022

easy to use and look great. Would be nice to have larger size options

Robert A Verified Purchase


February 21, 2022


John J Verified Purchase


June 30, 2021

I used these on both sides of the firewall, and they covered the grommet perfectly. I like the split design which allowed me manipulate the wires and final position of the grommet while still having one half of the shield in place.

Jesse K
November 2, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What material are these two piece firewall shields constructed of?

These are stainless steel fire shields.

Q: Distance between mounting hole centers?

2-1/4" from center to center.

Q: Are these dimensions correct? 1/2 hole, but only 3/4 grommet dimple? I dont see any grommets listed that will fit these. I see the smaller hole size version has multiple grommet dimple sizes, but this one doesnt?

These are commonly sold with AN931-5-12 which would give you a 5/16 hole.

Q: What is the depth (not width) of the dimple?

.125 or 1/8 inch

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