The Brass are a little fatter, but you don’t have to worry about SS on SS Galling.
https://www.rockler.com/e-z-knife-threaded-insert-for-hard-wood-brass-pack-of-25 The SS ones allow for a smaller hole. Similar in price. I put a thin coating of tefgel on a screw, put it in the helicoil, and pushed that into the hole filled with thickened epoxy. I guess I liked the SS Helicoil better. Just a personal preference. https://www.mcmaster.com/helicoils/stainless-steel-helical-inserts-9/ I put them on the deck with 5200 (Don’t say it!) because these hand rails inevitably are stepped on sideways when the boat is heeling, and a 10-24 machine screw can’t handle that too well. But the allure of having an O-ring seal for the ease of removing in the fall for varnishing is pretty hard to ignore. I sent you a picture of the install off list. Bill Coleman Entrada, Erie, PA From: CHARLES SCHEAFFER [mailto:cscheaf...@comcast.net] Sent: Sunday, March 20, 2022 8:35 AM To: Stus-List Cc: Bill Coleman Subject: Re: Stus-List Re: Teak Handrail install Hey Bill, I am just learning about these threaded inserts and heli-coils. Can you share what you learned from using both? Chuck S On 03/19/2022 11:16 PM Bill Coleman via CnC-List <cnc-list@cnc-list.com> wrote: Yes, I did that about 15 years ago, I used brass inserts epoxied into the outside rails. Then later I did the sliding hatch cover by epoxying SS Helicoils into the teak. Bill Coleman Entrada, Erie, PA From: CHARLES SCHEAFFER via CnC-List [mailto:cnc-list@cnc-list.com] Sent: Saturday, March 19, 2022 9:37 PM To: CNC boat owners, cnc-list Cc: CHARLES SCHEAFFER Subject: Stus-List Teak Handrail install Curious if anyone else tried this? My cabin top handrails are bolted to a matching set in the cabin ceiling. They were throughbolted to each other using long bolts and nuts and the holes bunged. I removed them to fix leaks many years ago and want to install them now so I can simply remove the screws from inside and remove both for a winter retouch. They were originally through bolted together, the outside cabintop handrails had 3 1/2" long 10-24 screws and the cabin ceiling handrails had nuts holding it all together, both fasteners had teak bungs over the fasteners. My plan is to install threaded inserts into the outside handrails and use stainless 10-24 screws from the inside ones to hold them together. My plan is to bung the outer handrails and leave out bungs on the inner set, so I can remove the the screws from inside, each winter. I've already overbored and redrilled and countersunk the deck holes, and will use butyl tape for bedding. This should provide a way to remove the long screws from inside without removing the bungs on the outside handrails. https://www.mcmaster.com/90016A011/ Chuck Scheaffer Resolute 1989 C&C 34R Annapolis
