Enviro M55 missing glass retainer screws.

[DevinM88]

Hi all. My 2009 Enviro M55 FS Steel has 7 hex/flat-blade screws holding the glass. Two of the screw heads have snapped off (directly above and below the latch), leaving 5 intact. P/N: 50-2065 (only available for the M55 FS) doesn't give specs for these individual screws. I'm afraid to back out a good one (for sizing) because I fear it snapping. I’m planning to drill, extract, and run a tap-and-die to fix the threads instead of buying a new retainer. Looking for any tips or EXPERIENCE before I dive in. And, what size are these screws??? Cheers!

 

[Whitenuckler]

Hi all. My 2009 Enviro M55 FS Steel has 7 hex/flat-blade screws holding the glass. Two of the screw heads have snapped off (directly above and below the latch), leaving 5 intact. P/N: 50-2065 (only available for the M55 FS) doesn't give specs for these individual screws. I'm afraid to back out a good one (for sizing) because I fear it snapping. I’m planning to drill, extract, and run a tap-and-die to fix the threads instead of buying a new retainer. Looking for any tips or EXPERIENCE before I dive in. And, what size are these screws??? Cheers!

I believe a new retainer would come with screws but I don't see any information. Once you get the retainer off do you think you could get at the broken screw with vice grips? That is the kind of job would like do after you have put another door on it.

 

[johneh]

I would not be worried about thread size. If you drill it out, you will destroy the original threads anyway. Now you can re-thread the hole any size you like. Find a good hardware store that can order or has in stock the bolts you need ( here we use a fastener store that is dedicated to nuts, bolts, screws and other types of fasteners). If you can get whatever is left of the screw, they will be able to match it
As to the removal, I use professional extractors used by mechanics. But it there is enough to grip with vice grips, go for it; use lots of penetrating oil

 

[DevinM88]

Thanks! That all makes sense. If this were an automotive project, I’d just upgrade to ARP Fasteners. I’ve done my share of broken exhaust bolt extractions using penetrating oil and a propane bottle torch, but these screws feel incredibly brittle and are definitely going to require a careful process to remove. Ultimately, I’m planning to track down an upgraded, higher-grade fastener material to replace them. Any thoughts or recommendations on what material to look for?

 

[johneh]

For strength and ease of removal, go with stainless steel

 

[Whitenuckler]

Thanks! That all makes sense. If this were an automotive project, I’d just upgrade to ARP Fasteners. I’ve done my share of broken exhaust bolt extractions using penetrating oil and a propane bottle torch, but these screws feel incredibly brittle and are definitely going to require a careful process to remove. Ultimately, I’m planning to track down an upgraded, higher-grade fastener material to replace them. Any thoughts or recommendations on what material to look for?

You will need a bottoming tap(s) too

 

[vinny11950]

Following. Good luck