Roll pin

Jeryray · February 22, 2020, 04:57 PM

I can't seem to find the roll pin for the sight assembly on the Sig P210a.
I think it's the same pin used on the P320 x Five Legion.

TIA

Jeryray · February 23, 2020, 03:56 PM

Anyone know where I could a get 2.1 diameter x 18mm long roll pin.

Used in the P210A and the sig 320X5 sight.

Sig has not been of any help.

Most parts back ordered

TIA.

Jim Watson · February 23, 2020, 04:21 PM

Hint: The actual diameter of a nominal 2mm roll pin is 2.1 - 2.19mm.

https://www.mcmaster.com/roll-pins
https://www.grainger.com/product/FAB...ing-Pin-41KA36

burrhead · February 23, 2020, 06:52 PM

Try a real old school hardware store. If you get one a little long, you can always grind it down.

**JohnKSa** · February 23, 2020, 07:56 PM

Have you called SIG? It wouldn't surprise me if they sent you one free.

Jeryray · February 23, 2020, 10:14 PM

Thanks for the reply. I am looking for a roll pin.
Mcmaster and grainger show split pins. Not the same.

**Unclenick** · February 23, 2020, 10:23 PM

Those split pins are what roll pins are, as they are made from flat steel rolled over into the cylindrical pin shape. What shape are you thinking of? If it is just a solid pin, you can buy drill rod in 0.001" diameter steps and make your own. MSCdirect.com has it and McMaster has a fairly big selection. McMaster has some sizes already hardened that you can cut to shape with a Dremel cutoff wheel.

Jim Watson · February 23, 2020, 11:34 PM

I linked spring (split) pins because that is all I have seen on a gun.
If you want spiral (roll) pins, McMaster and Grainger sell them, too.

HiBC · February 24, 2020, 01:59 AM

You might check local listings for "fasteners"

The sort of place that sells Grade 8 bolts and nuts and aircraft fasteners and such.

If you check MSC or E-bay or Amazon you might just find a box of 100 for a price low enough to not worry about the 99 spares.

I'd think,it would be under $5

Often buying a box of 100 of just about any small hardware (stainless screws and nuts,tee-nuts,etc) delivered to your door beats driving around paying $3 for a baggie of six.

Beware your eyeball might not see the subtle size difference between an inch and a metric size.

One more thing. Suppose you took a 1/4-20 allen head cap screw (or similar)
and ground the tip of the threaded end back 1/32nd of an inch or so.,as square as you can. That will get you nder the surface hardening ona cap screw.

Then take a drill bit just big enough your pin will slip easy into the hole,and drill into the end you just ground off maybe 1/3 the length of your pin. Or 1/2...it don't matter much.Its even OK if its off center. You do want the hole in line with the length of the screw. Obviously,a lathe will work.If your drill press vise has a vertical vee groove,great! OK,you can use a hand drill.Its just a screw.

The plan is making a roll pin starter punch that will hold your pin square and straight to the pin hole in your gun so you can get it started.

You can taper or shape the outside of the end of the screw/punch or drill the hole offset as you need to get the pin to the hole. Like,don't ding your slide.

I just don't do trying to hold a roll pin with fingers,tweezers,hemostats,etc any more.

Drill you a starter punch.

**Aguila Blanca** · February 24, 2020, 06:19 AM

Quote:

Originally Posted by Jeryray

Thanks for the reply. I am looking for a roll pin.
Mcmaster and grainger show split pins. Not the same.

Unclenick beat me to it, but I'll pile on for emphasis. Split pins are roll pins. Look at the group at the upper left of the page that McMaster-Carr link takes you to:

Quote:

Slotted spring pins are also known as roll, tension, split, and expansion pins. Because the slot is pressed closed when the pins are inserted, they don't flex after insertion.

Jim Watson · February 24, 2020, 09:15 AM

I assume the OP is looking at an existing pin and sees the spiral type. Strange, the only place I have seen them in a gun was a late war Nazi rule Polish Radom.

No matter, the same vendors sell both types.

Jeryray · February 24, 2020, 09:58 AM

Ordered some from McMaster, let you know.

Thanks

Jeryray · March 1, 2020, 09:16 AM

The roll pins from Mcmaster look just fine.

Thanks All

Jim Watson · March 1, 2020, 09:23 AM

But do they fit the hole?

SGW Gunsmith · March 1, 2020, 04:45 PM

I've been using both the "slotted spring pins" and the "coiled spring pins" for many years. If they didn't fit the designated hole, their worth would be "0".
For some firearms applications these "spring" pins have a very warranted use, especially with pin holes slightly over-size that allow pivot pins to drift right or left.
By nature of their action, these pins expand outward slightly when in place and do a tremendous job. Most all sizes manufactured are available at your local True-Value hardware store for change you can find in your couch.

Seven High · March 5, 2020, 07:40 PM

I realize that I am late in answering this post but, My local Harbor Freight sells an assortment of roll pins for around $5.00 per container.

**4V50 Gary** · March 7, 2020, 08:13 PM

Thanks Steve. Never knew that.

February 22, 2020, 04:57 PM	#1
Jeryray Senior Member Join Date: December 29, 2016 Location: NY Area Posts: 310	Sig P210 or Sig P320 x5 sight roll pin I can't seem to find the roll pin for the sight assembly on the Sig P210a. I think it's the same pin used on the P320 x Five Legion. TIA __________________ NRA Life Member NRA CSRO NRA Pistol Instructor NYS CCL Instructor

February 23, 2020, 03:56 PM	#2
Jeryray Senior Member Join Date: December 29, 2016 Location: NY Area Posts: 310	Roll pin Anyone know where I could a get 2.1 diameter x 18mm long roll pin. Used in the P210A and the sig 320X5 sight. Sig has not been of any help. Most parts back ordered TIA. __________________ NRA Life Member NRA CSRO NRA Pistol Instructor NYS CCL Instructor

February 23, 2020, 06:52 PM	#4
burrhead Senior Member Join Date: July 6, 1999 Location: Chihuahuan desert, Texas Posts: 1,148	Try a real old school hardware store. If you get one a little long, you can always grind it down. __________________ Join the GOA, SAF and the TSRA I'm offended by people that are easily offended.

February 23, 2020, 07:56 PM	#5
JohnKSa Staff Join Date: February 12, 2001 Location: DFW Area Posts: 24,986	Have you called SIG? It wouldn't surprise me if they sent you one free. __________________ Do you know about the TEXAS State Rifle Association?

February 23, 2020, 10:14 PM	#6
Jeryray Senior Member Join Date: December 29, 2016 Location: NY Area Posts: 310	Thanks for the reply. I am looking for a roll pin. Mcmaster and grainger show split pins. Not the same. __________________ NRA Life Member NRA CSRO NRA Pistol Instructor NYS CCL Instructor

February 23, 2020, 04:21 PM	#3
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,541	Hint: The actual diameter of a nominal 2mm roll pin is 2.1 - 2.19mm. https://www.mcmaster.com/roll-pins https://www.grainger.com/product/FAB...ing-Pin-41KA36

February 23, 2020, 10:23 PM	#7
Unclenick Staff Join Date: March 4, 2005 Location: Ohio Posts: 21,063	Those split pins are what roll pins are, as they are made from flat steel rolled over into the cylindrical pin shape. What shape are you thinking of? If it is just a solid pin, you can buy drill rod in 0.001" diameter steps and make your own. MSCdirect.com has it and McMaster has a fairly big selection. McMaster has some sizes already hardened that you can cut to shape with a Dremel cutoff wheel. __________________ Gunsite Orange Hat Family Member CMP Certified GSM Master Instructor NRA Certified Rifle Instructor NRA Benefactor Member and Golden Eagle

February 23, 2020, 11:34 PM	#8
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,541	I linked spring (split) pins because that is all I have seen on a gun. If you want spiral (roll) pins, McMaster and Grainger sell them, too.

February 24, 2020, 01:59 AM	#9
HiBC Senior Member Join Date: November 13, 2006 Posts: 8,286	You might check local listings for "fasteners" The sort of place that sells Grade 8 bolts and nuts and aircraft fasteners and such. If you check MSC or E-bay or Amazon you might just find a box of 100 for a price low enough to not worry about the 99 spares. I'd think,it would be under $5 Often buying a box of 100 of just about any small hardware (stainless screws and nuts,tee-nuts,etc) delivered to your door beats driving around paying $3 for a baggie of six. Beware your eyeball might not see the subtle size difference between an inch and a metric size. One more thing. Suppose you took a 1/4-20 allen head cap screw (or similar) and ground the tip of the threaded end back 1/32nd of an inch or so.,as square as you can. That will get you nder the surface hardening ona cap screw. Then take a drill bit just big enough your pin will slip easy into the hole,and drill into the end you just ground off maybe 1/3 the length of your pin. Or 1/2...it don't matter much.Its even OK if its off center. You do want the hole in line with the length of the screw. Obviously,a lathe will work.If your drill press vise has a vertical vee groove,great! OK,you can use a hand drill.Its just a screw. The plan is making a roll pin starter punch that will hold your pin square and straight to the pin hole in your gun so you can get it started. You can taper or shape the outside of the end of the screw/punch or drill the hole offset as you need to get the pin to the hole. Like,don't ding your slide. I just don't do trying to hold a roll pin with fingers,tweezers,hemostats,etc any more. Drill you a starter punch. Last edited by HiBC; February 24, 2020 at 02:06 AM.

February 24, 2020, 09:15 AM	#11
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,541	I assume the OP is looking at an existing pin and sees the spiral type. Strange, the only place I have seen them in a gun was a late war Nazi rule Polish Radom. No matter, the same vendors sell both types.

February 24, 2020, 09:58 AM	#12
Jeryray Senior Member Join Date: December 29, 2016 Location: NY Area Posts: 310	Ordered some from McMaster, let you know. Thanks __________________ NRA Life Member NRA CSRO NRA Pistol Instructor NYS CCL Instructor

March 1, 2020, 09:16 AM	#13
Jeryray Senior Member Join Date: December 29, 2016 Location: NY Area Posts: 310	The roll pins from Mcmaster look just fine. Thanks All __________________ NRA Life Member NRA CSRO NRA Pistol Instructor NYS CCL Instructor

March 1, 2020, 09:23 AM	#14
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 18,541	But do they fit the hole?

March 1, 2020, 04:45 PM	#15
SGW Gunsmith Junior member Join Date: December 31, 2014 Location: Northwest Wisconsin Posts: 285	I've been using both the "slotted spring pins" and the "coiled spring pins" for many years. If they didn't fit the designated hole, their worth would be "0". For some firearms applications these "spring" pins have a very warranted use, especially with pin holes slightly over-size that allow pivot pins to drift right or left. By nature of their action, these pins expand outward slightly when in place and do a tremendous job. Most all sizes manufactured are available at your local True-Value hardware store for change you can find in your couch.

March 5, 2020, 07:40 PM	#16
Seven High Senior Member Join Date: December 11, 2004 Posts: 650	I realize that I am late in answering this post but, My local Harbor Freight sells an assortment of roll pins for around $5.00 per container.

March 7, 2020, 08:13 PM	#17
4V50 Gary Staff Join Date: November 2, 1998 Location: Colorado Posts: 21,838	Thanks Steve. Never knew that. __________________ Vigilantibus et non dormientibus jura subveniunt. *Molon Labe!*