M4 Washers? What Kind? For Top Rail / Side Saddle

[JillV]

Hello, apologies in advance if this is a dumb question, I am about as mechanical as a bowling ball.

I ran a shotgun course last weekend & 2 screws came out of my Mesa Tactical side saddle I have mounted to my M4. I learned the existence of Loctite, and bought some.

I ordered replacement screws from Benelli, they came without washers. I am hesitant to screw them in & Loctite everything without washers, since the remaining screws have washers.

How can I find the right fit / quality washers? Is this just a Home Depot drop by kinda thing? Appreciate any help, I am a novice.

[JillV]

Also, possibly a second dumb question. But once I do get the correct washers... 

What kind of Loctite should I use to screw the Mesa side saddle into the top rail on the 5 screws? 242 blue, or 243 blue? Or something else.

Any help / knowledge is very much appreciated... Thanks.

Edited November 11, 2024 by JillV

[benelliwerkes]

It is a Bellville-style washer; serrated.

 

[Kahamu]

If you email benelli, they'll send you some. They sent me some last year after I lost them.

[JillV]

Thank you both!

Would you recommend any particular kind of Loctite? I have 242 blue but I heard 243 blue might be better. I am a noob however.