roll pin size and length

[MarkInPA]

Can anyone help with the size and length required for the roll pin that retains the ejector on a Bergara B14 Hunter? Or maybe point me in the right direction?

 

[WapitiBob]

If you lost it, use a drill bit set to figure out the dia. Length should be easy.

 

[MarkInPA]

If you lost it, use a drill bit set to figure out the dia. Length should be easy.

Good idea. Why don't I ever think of simple things like that?

 

[MagnumManiac]

1/8" is the common size across all manufacturers for roll pins, however, there are exceptions to this.
As stated above, use a gauge type drill bit set to determine size.

Cheers.

 

[MarkInPA]

1/8" is the common size across all manufacturers for roll pins, however, there are exceptions to this.
As stated above, use a gauge type drill bit set to determine size.

Cheers.

Should the roll pin be slightly over-sized?

 

[MagnumManiac]

Should the roll pin be slightly over-sized?

Well yes, so it is not loose in its hole. It normally has between .002" to .004" interference.

Cheers.

 

[nksmfamjp]

Should the roll pin be slightly over-sized?

Yes, but they are sized by the hole size. For example, I think the ejector roll pin in my Tikka measured 2.7mm, but is a size 2.5mm.

Punches and Allen wrenches also make good pin gages if you measure first with calipers.

 

[Taj]

Should the roll pin be slightly over-sized?

Roll pins are often called tension pins and should be an interference fit. That's why they are split and have tapered ends. A starter punch is always a good idea (punch with a hole in the business end that fits the pin) followed by a roll pin punch. Keeps from buggering up or spreading the end of the pin you are beating on. Find the right size with a set of numbered drill bits.

 

[quigley257]

Here you go... https://www.bergara.online/en/exploded-maps/
Looks to be 2x12mm

 

[MarkInPA]

Here you go... https://www.bergara.online/en/exploded-maps/
Looks to be 2x12mm

Thank you.

I'm going to download and store that skematic too. That's handy to have.

 

[nksmfamjp]

DIN 7343 - Spiral-span pins, rule execution

Looks like a 2x12 spiral pin.

Honda 90751-VL0-B00 PIN, COILED (2X12) | eBay

Orders outside the US are not protected by manufacturer warranty. International Orders.

www.ebay.com

 

[RichCoyle]

Should the roll pin be slightly over-sized?

This very day I purchased 1/8 roll pins from the local home improvement center. They are 3/4" long and .134" dia. Two per pack cost about $2.