Strain Screw Kit — S&W K/L/N Frame Revolver
Strain Screw Kit — S&W K/L/N Frame Revolver
A strain screw kit for tuning the double-action pull on your S&W K, L, or N frame. The strain screw presses on the mainspring and sets how hard the hammer falls, which directly affects your pull weight. The key difference from the factory screw is that the TK Custom screw has no collar, so it can thread in further than the factory part. That gives you real adjustment range to tune mainspring tension and dial your double-action pull where you want it.
The kit includes everything you need to do the job
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TK Custom no-collar strain screw -
Allen wrench for the strain screw
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Blue Loctite to hold your setting
Key Features
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No collar, so it threads in further than the factory screw for more adjustment range
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Lets you tune mainspring tension and double-action pull weight
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Comes with the Allen wrench and Blue Loctite to set it and keep it
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For S&W K, L, and N frame revolvers
A note on tuning: backing the screw off lightens the pull, but too little tension causes light strikes. Pair this with an extended firing pin if you want to run a lighter pull while keeping reliable ignition.
TK Custom is one of the top destinations in the world for S&W action work, and we hold these parts to the same standard we keep on our own bench.
Fitment
Fits S&W K, L, and N frame revolvers.
Specs
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Includes: no-collar strain screw, Allen wrench, Blue Loctite
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Fits: S&W K/L/N frame
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Made in USA
Guarantee
Best fitment, quality, and durability in the industry, or your money back.
Free Shipping on orders over $250.00 in the USA only!
Smaller orders less than $250.00 are $9.95 for shipping.
No Free Return Shipping with Labor
No International Shipping, except to Canada.
$35.00
Canada - Priority Mail / NO Tracking Out side of USA
Complete The Setup
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Strain Screw Kit — S&W K/L/N Frame Revolver
Strain Screw Kit — S&W K/L/N Frame Revolver
$9.95
Quantity× 1
Total$9.95
Included free
FREQUENTLY ASKED QUESTIONS
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Federal or Remington & others makes works the best with the .025 thick Full Moonclips, which fit all the .38/357 standard moonclip. They allow the cartridges to have some movement or wiggle so that they will fall right into the chambers once properly aligned. Winchester brass does not work at all as the groove width is too tight/small.
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Use this text block to discuss some commonly asked questions like shipping and returns, sizing, warranties, or product and company details.
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There is no SAAMI specifications for the extractor groove and each manufacturer makes them as they want. The following list gives you a great example. This is why the diameter size of the brass is critical to proper loading, unloading and fitment. Cartridge diameter too big and moonclip too small causes the moonclip to bend. The cartridge should rotate within their respective place and wobble slightly when all cartridges are loaded.
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If you are unsure about how to use moon clips for your revolver, or wondering which moon clip to use, call us. See the Contact menu tab.
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