Crosman Air Pistol Owners Forum

Crosman air pistol - General => Crosman air pistol - General discussion => Topic started by: cohiba on February 11, 2013, 10:20:03 PM

Title: Rear breech screw
Post by: cohiba on February 11, 2013, 10:20:03 PM
Does anyone know the part number for the rear breech screw that goes in the steel breech (flat head on the back)?

If im not mistaken arent they a little shorter then the one that comes with the plastic breech? This is for a 1377 gun.
Title: Re: Rear breech screw
Post by: AS13 on February 11, 2013, 10:33:10 PM
http://www.crosman.com/pdf/manuals/2300S-EVP.pdf (http://www.crosman.com/pdf/manuals/2300S-EVP.pdf)
Title: Re: Rear breech screw
Post by: 7624452 on February 11, 2013, 11:03:02 PM
You can use a screw from your local hardware store.  It is 8-32 x 3/4 or 11/16, I forget which.  You just have to make sure that it does not protrude into the hammer spring.  If you get one that's a little too long you can grind it down a little. If you want to order one the part number is AS2250-015.
Title: Re: Rear breech screw
Post by: Crosshairs on February 11, 2013, 11:23:01 PM
Quote from: 7624452 on February 11, 2013, 11:03:02 PM
You can use a screw from your local hardware store.  It is 8-32 x 3/4 or 11/16, I forget which.  You just have to make sure that it does not protrude into the hammer spring.  If you get one that's a little too long you can grind it down a little. If you want to order one the part number is AS2250-015.
x1
Title: Re: Rear breech screw
Post by: AS13 on February 11, 2013, 11:26:29 PM
You might want to look into getting the flat head slot or Phillips screws from McMaster. Will save a lot of aggravation down the road...
http://www.mcmaster.com/?orderview=new#machine-screw-fasteners/=lfqdu3 (http://www.mcmaster.com/?orderview=new#machine-screw-fasteners/=lfqdu3)
http://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,10156.0.html (http://www.crosman-air-pistol-owners-forum.com/board/index.php/topic,10156.0.html)
Title: Re: Rear breech screw
Post by: AS13 on February 11, 2013, 11:29:07 PM
 :-[My bad...When you said breech screw ???
Title: Re: Rear breech screw
Post by: 7624452 on February 12, 2013, 12:07:01 AM
Not a bad idea to get some replacements for the front 4-48 breech screw.  I got a bag of 100 in anticipation of  breaking a stock one and that finally happened to me last week.  I broke off a cheap tool right even with the top and had to drill the top off to get it out.  The screws I had were 4-48 x1/4" SS Phillips.  The tops are a little too wide - I chucked them into a drill reduced the size a little with a file, and they fit perfectly. :-*
Title: Re: Rear breech screw
Post by: WyoMan on February 12, 2013, 03:41:17 AM
Quote from: 7624452 on February 11, 2013, 11:03:02 PM
You can use a screw from your local hardware store.  It is 8-32 x 3/4 or 11/16, I forget which.  You just have to make sure that it does not protrude into the hammer spring.  If you get one that's a little too long you can grind it down a little. If you want to order one the part number is AS2250-015.
Mine are 8-32 x 3/4" and just like AS13 I get from Mcmaster - I got stainless steel:
http://www.mcmaster.com/?orderview=new#machine-screw-fasteners/=lftnav (http://www.mcmaster.com/?orderview=new#machine-screw-fasteners/=lftnav)
Title: Re: Rear breech screw
Post by: JEBert on February 12, 2013, 05:25:28 AM
QuoteYou just have to make sure that it does not protrude into the hammer spring.
I have used several 3/4" screws and I grind a few threads off as I check to make them flush with the inside of the rear plug so that they don't interfere with the hammer spring.  They come out to 11/16" (.685" ~.003).
Cheers,
Title: Re: Rear breech screw
Post by: 7624452 on February 12, 2013, 10:55:14 PM
I found all the screws I needed at local hardware stores except the 4-48.  I bought a 100 pack of them on Amazon.
Title: Re: Rear breech screw
Post by: WyoMan on February 13, 2013, 03:08:16 AM
Quote from: JEBert on February 12, 2013, 05:25:28 AM
I have used several 3/4" screws and I grind a few threads off as I check to make them flush with the inside of the rear plug so that they don't interfere with the hammer spring.  They come out to 11/16" (.685" ~.003).
Cheers,
Good call JEBert  :-* just measured one I removed and it is exactly 11/16" with dremel'd end so I must have started with 3/4"
not liking that I can't remember..... its good to have people help  :)