View Full Version : Compression Coil Spring Help

11-13-2009, 08:41 AM
I'm placing this in both the General and Gunsmitihing forums to increase the chances of finding the spring I need.

I have been give a rifle to repair. Parts have long become unavailable for it. The reason I took on the task to repair it becasue I have one exactly like it and mine has all the missing parts. I have made the missing parts but now have come to the point of needing the very small extractor compression coil spring.

The extractor coil spring I need is. 0.525" long (free length), outside diameter 0.112", has 13 coils and the wire diameter is 0.014". I have no equipment to messure the spring constant for the spring I have but that would be a needed bit of information.

I have ordered a spring that was close dimensionally from Small Parts but is way too "squishy". It doesn't have enough strength to function properly.

Does anyone know of a place that I can find a spring that will work? I have looked at the Brownell's catalog but didn't find anything. Thanks.

Bob Ford
11-13-2009, 09:06 AM
These are the same spring assortments that Brownel's have. I have sets from Enco and Brownel's.


Bob Ford
11-13-2009, 09:15 AM
Here is Brownell's spring assortments.

11-13-2009, 01:25 PM
Machinery's Handbook has mandrel sizes for winding your own springs. And you May be able to get some music wire of the correct diameter, in 2 - 3 foot lengths from your local Ace Hardware, (that is where I get mine). Or you can get the proper heat-treatable wire, (we made springs for aircraft), wind it on the mandrel, heat treat it, (usually a low heat, 350 to 700 deg. F), and grind the ends flat. I do not recall the S.A.E. classification of the wire that we used, as it is in my notes from 29 years ago, somewhere....

Regards, Keith

11-13-2009, 03:53 PM
Music wire is available at most hobby shops. Get an assortment and your oddball spring and small pin problems are solved.

Al Messer
11-13-2009, 06:21 PM
Try your local locksmith as they use lots of compression springs in lock tumblers.

Nick Carter
11-15-2009, 03:31 PM
Sounds like the first spring I wound recently:

Scroll down the post to the middle. It was relatively painless but it helps to have extra spring wire on hand for when you screw up...

11-18-2009, 12:25 AM
You might look here:

11-18-2009, 07:50 AM
I keep a supply of music wire of various sizes on hand and usually make my own springs as needed. This is a very good tutorial on spring making;