Yes
I have an original 16 ga. nitro special made by Lefever. The sight bead is one eighth if an inch in diameter.
Remingtons are typically 6-48 TPI.
The thread size is: M3.0-.5 The Browning part number for the bead is B1116580
bead
Very good question, but unfortunately the parts listings only show the part number and not the specs. You will need your guns serial number and call the Browning Service center to get the info you need. Here is a link to Browning parts: Early Citori's had a part number of: PO34332 for the front bead sight and post.
3mm x 0.5
AnswerShotguns don't have sights. Just a bead at the front of the barrel. Incorrect. Some shotguns do just have a bead at the muzzle's end ... but, shotguns do indeed have aiming sights available. Typically, a shotgun designed to shoot rifled slugs will have conventional, adjustable iron sights with the rear sight mounted in the area above the trigger & and a blade sight ... sometimes with a colored line on the front sight. A typical name for shotgun sights is called Ghost Ring Sights. It came standard on my Mossberg 500 12 Ha. Shotgun.
You are not supposed to have a sight on a shotgun because you don't aim when shooting. You can however use a bead, black or with some color to help you. If you however look AT the bead you will be too slow. or you can use a holographic sight like the Redring sight where you don't look at the sight but keep focus on the target and still have a ring letting you see where the burst spread pattern is.
i would have a qualified gunsmith answer that question for you.
bead sight
The same thread pattern as a Belgium made Browning. Same gun, same specs, different metal in the barrels.