Smith & Wesson Forum

Go Back   Smith & Wesson Forum > >


Reply
 
Thread Tools Display Modes
  #1  
Old 07-15-2017, 04:54 PM
stepsez19's Avatar
stepsez19 stepsez19 is offline
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Sep 2014
Location: Columbia City Indiana
Posts: 28
Likes: 102
Liked 7 Times in 7 Posts
Default Cant get spanner screw to back out on 27

Well I got my new rear blade for my S&W 27-2. I bought the .160 and watched the videos on utube to get a general idea on how it works..
I got the screw head off and went and bought #4 spanner bit to back out the blade....but the spanner bit broke..So i tried making make shift tools to try and get it out and just can't get anything that small to work...That sucker is in there and I don't know what to do next..Cant get that spanner screw to turn!!!(to back out the blade)those 2 little holes are a b!$%^......
Reply With Quote
  #2  
Old 07-15-2017, 05:44 PM
Toolguy Toolguy is online now
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Jan 2010
Location: Kansas City area
Posts: 608
Likes: 1,969
Liked 589 Times in 268 Posts
Default

Drill out the end of the screw with a 5/64 drill bit. Then the nut will come off and you can slide the blade with remaining part of the screw out the right side. The nut will come off on the drill bit or just fall out of it's hole.
Reply With Quote
The Following 4 Users Like Post:
  #3  
Old 07-15-2017, 06:18 PM
stepsez19's Avatar
stepsez19 stepsez19 is offline
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Sep 2014
Location: Columbia City Indiana
Posts: 28
Likes: 102
Liked 7 Times in 7 Posts
Default

Quote:
Originally Posted by Toolguy View Post
Drill out the end of the screw with a 5/64 drill bit. Then the nut will come off and you can slide the blade with remaining part of the screw out the right side. The nut will come off on the drill bit or just fall out of it's hole.
Thanks tool guy ill give it a shot ,,,thanks
Reply With Quote
  #4  
Old 07-15-2017, 07:22 PM
stepsez19's Avatar
stepsez19 stepsez19 is offline
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Sep 2014
Location: Columbia City Indiana
Posts: 28
Likes: 102
Liked 7 Times in 7 Posts
Default

Quote:
Originally Posted by Toolguy View Post
Drill out the end of the screw with a 5/64 drill bit. Then the nut will come off and you can slide the blade with remaining part of the screw out the right side. The nut will come off on the drill bit or just fall out of it's hole.
Perfect !!! Worked like a dream....Thanks tool guy
Reply With Quote
The Following User Likes This Post:
  #5  
Old 07-15-2017, 08:16 PM
Toolguy Toolguy is online now
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Jan 2010
Location: Kansas City area
Posts: 608
Likes: 1,969
Liked 589 Times in 268 Posts
Default

You're welcome!
Reply With Quote
The Following 2 Users Like Post:
  #6  
Old 07-16-2017, 01:56 PM
Alk8944's Avatar
Alk8944 Alk8944 is online now
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Jan 2007
Location: Sandy Utah
Posts: 5,842
Likes: 519
Liked 3,256 Times in 1,559 Posts
Default HOW TO REALLY CHANGE A SIGHT SLIDE!

stepsez19,

For future reference in case you change a sight slide again:

The reason you had problems is you followed a YouTube video! Many of these, including the one by Larry Potterfield of Midway, are WRONG!! They tell you to turn the windage screw Left until it breaks, this jams the sight slide against the left side of the sight base and clamps it between the slide and the nut and jams the screw tight. Sound familiar?

The correct way is to read the instructions that came with the slide kit**, turn the screw to the Right until it breaks, the slide will be to the right side of the sight base. Simply push the slide all the way to the left then and the screw and nut will protrude from the left side of the base and can be un-screwed with the fingers and the slide then removed to the right.

** The kit that is sold by S&W comes with an instruction sheet.
__________________
Gunsmithing S&W since 1961
Reply With Quote
The Following 4 Users Like Post:
  #7  
Old 07-16-2017, 02:22 PM
Toolguy Toolguy is online now
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Jan 2010
Location: Kansas City area
Posts: 608
Likes: 1,969
Liked 589 Times in 268 Posts
Default

I just unscrew the nut to begin with, then reuse all the parts, rather than destroy perfectly good parts.
Reply With Quote
The Following User Likes This Post:
  #8  
Old 07-31-2017, 08:38 PM
TNZ71's Avatar
TNZ71 TNZ71 is offline
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: May 2016
Location: TN
Posts: 412
Likes: 561
Liked 993 Times in 238 Posts
Default

I had a heck of time today replacing a rear sight blade on a model 28. I ordered the blade from Smiths and Wesson. I watched the Potterfield/Midway video and couldn't get the spanner nut to budge. Had given up and was going to order a whole sight base. Then I found this thread and drilled out the staking. Everything came out fine then. Question: Are the screw threads supposed to match the sight blade or be lose in it?
Reply With Quote
  #9  
Old 08-01-2017, 09:32 AM
Toolguy Toolguy is online now
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Jan 2010
Location: Kansas City area
Posts: 608
Likes: 1,969
Liked 589 Times in 268 Posts
Default

The threads can be a bit loose, but not much. They are 80 threads per inch, which means they have to be a fairly close fit to work at all.

As far as unscrewing the nut, it depends on how hard it was staked to begin with. Most of them are lightly staked and the nut can be unscrewed with a light bit of effort. Some are more heavily staked and can't be unscrewed without drilling out the stake. If you have to drill it, then the screw is usually too short to restake when you put it back in, so a new screw will be required.
Reply With Quote
The Following User Likes This Post:
  #10  
Old 08-01-2017, 10:36 AM
Model520Fan Model520Fan is offline
US Veteran
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Dec 2002
Location: MA
Posts: 5,316
Likes: 2,870
Liked 2,552 Times in 1,276 Posts
Default

Quote:
Originally Posted by Alk8944 View Post
stepsez19,

For future reference in case you change a sight slide again:

The reason you had problems is you followed a YouTube video! Many of these, including the one by Larry Potterfield of Midway, are WRONG!! They tell you to turn the windage screw Left until it breaks, this jams the sight slide against the left side of the sight base and clamps it between the slide and the nut and jams the screw tight. Sound familiar?

The correct way is to read the instructions that came with the slide kit**, turn the screw to the Right until it breaks, the slide will be to the right side of the sight base. Simply push the slide all the way to the left then and the screw and nut will protrude from the left side of the base and can be un-screwed with the fingers and the slide then removed to the right.

** The kit that is sold by S&W comes with an instruction sheet.
It's all very fine to do something the right way when you are using the factory instructions. The real question is whether you can do it without cheating.
Reply With Quote
  #11  
Old 08-01-2017, 01:00 PM
TNZ71's Avatar
TNZ71 TNZ71 is offline
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: May 2016
Location: TN
Posts: 412
Likes: 561
Liked 993 Times in 238 Posts
Default

The replacement blade I received from S&W didn't include any form of instruction. I now notice the blade moves without turning the windage screw. Like the screw itself is too small for the blade. Thinking now I should have bought the whole assembly $50 vs $12 and a bunch of frustration.
Reply With Quote
  #12  
Old 08-01-2017, 01:40 PM
Toolguy Toolguy is online now
Member
Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27 Cant get spanner screw to back out on 27  
Join Date: Jan 2010
Location: Kansas City area
Posts: 608
Likes: 1,969
Liked 589 Times in 268 Posts
Default

If the nut is loose, the blade can move sideways a little just by sliding it. The fix is to tighten the nut till it just bottoms out, then back it off a bit and lightly stake it in place.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Shield 9mm slide automatically locks back when racked back sermy01 Smith & Wesson M&P Pistols 13 05-15-2017 09:07 PM
Nut Spanner Wrench jimmyj S&W-Smithing 2 08-05-2016 04:10 PM
640-1 Pro Series Back to the Mothership --- Second Time Back Edmo S&W Revolvers: 1980 to the Present 15 04-20-2015 05:49 PM
WTB Model 29-2 Rear sight elevation screw, side plate screw 824tsv WANTED to Buy 2 03-18-2013 02:42 PM
WTS: Rear Sight Nut Spanner & Dovetail Cutter.......... Marksman Accessories/Misc - For Sale or Trade 0 03-02-2012 07:02 PM

Powered by vBadvanced CMPS v3.2.3
smith-wessonforum.com tested by Norton Internet Security smith-wessonforum.com tested by McAfee Internet Security

All times are GMT -4. The time now is 09:04 PM.


S-W Forum, LLC 2000-2015
Smith-WessonForum.com is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)