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Thread Pitch Adapter Size Guide The Ultimate Thread Pitch Adapter Guide

Information contained on this site is added on a regular basis. Due to the nature of the information posted, it becomes outdated rapidly. Users are therefore cautioned to independently verify the correctness of information contained on the website that may have become outdated. The info on our website is not legal advice and legal advice may only be provided by a properly licensed attorney. 

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Thread Pitch Adapter Guide

There are many thread pitches out there, but we’re here to help. Each firearm has its own thread pitch, and most thread pitches are universal to the style of firearm and caliber.
We have put put together a comprehensive guide below which lists the most common thread pitches for firearms. Armory Den strives to make it as easy as possible for our customers to understand more about their thread pitches and what is the best fit for your firearm!
Thread Pitch Adapter Size Guide

Pistols

After Market Barrels
  • .22  |  1/2×28
  • 9mm | 1/2×28
  • .40 S&W | 9/16×24
  • 45 ACP | .578×28
Beretta
  • 9mm  |   1/2×28
B&T
  • 9mm  |  13.5×1 LHM
CZ
  • 9mm  |  1/2×28
Glock
  • 9mm  |  13.5×1 LHM
  • .40 S&W  |  14.5×1 LHM
  • 45 ACP  |   16×1 LHM
HK
  • 9mm  |  13.5×1 LHM
  • .40 S&W  |  14.5×1 LHM
  • 45 ACP  |  16×1 LHM (HK23 – 16×1 RHM)
FNH
  • 9mm  |  1/2×28
  • 45 ACP  |  .578×28
Ruger
  • .22  |  1/2×28
Smith & Wesson
  • .22  |  1/2×28
  • 9mm  |  1/2×28
  • 45 ACP | .578×28
Sig Sauer
  • 9mm  |  13.5×1 LHM
  • 45 ACP  | .578×28
Styler Arms
  • 9mm  | 1/2×28 or
  • 9mm  | 13.5xl LHM
Sphinx
  • 9mm  | 13.5×1 LHM

Pistol Caliber Carbines | Sub Firearms

Angstadt Arms
  • 9mm  | 1/2×36
  • .40 S&W  | 5/8×24
  • 45 ACP  | .578×28
CMMG
  • 5.7×28  |   1/2×28
  • 9mm  |   1/2×36 or 1/28×28
  • .40 S&W  |   .578×28
  • 45 ACP  |  .578×28
CZ
  • 9mm  | 18×1 (pre-2016)
  • 9mm  | 1/2×28
Colt
  • 9mm  | 1/2×36
IWI
  • 9mm  |  1/2×36
Kel Tec
  • 9mm  |  1/2×28
  • .40 S&W  |  9/16×24
LWRC
  • 45 ACP  |  .578×28
MP5 Variants
  • 9mm  |  1/2×28 or 3 Lug
Rugar
  • 9mm  |  1/2×28
Sig Sauer
  • 9mm  |  13.5×1 LHM
Quarter Circle 10
  • 9mm  |  1/2×28
  • 10mm  |  .578×28
  • 45 ACP  |  .578×28
  • .40 S&W  |  5/8×24 or .578×28

Rifles

Common Thread Pitches by Caliber
  • 5.56  |  1/2×28
  • .22  |  1/2×28
  • .30 cal  |  5/8×24
    • .308 (7.62×59)
    • .300 Blackout
    • 6.5 Creedmoor
Common Thread Pitches for AR’s
  • 5.56  |  1/2×28
  • 300BLK  |  5/8×24
  • .30 cal  |  5/8×24
Accuracy International 
  • .30 cal  |  18×1.5M or 5/8×24
CMMG
  • 350 Legend  |  1/2×28
CZ 
  • 557 UCS  | 5/8×24
  • 750 Sniper  |  18×1
  • Bren S1  |  1/2×28
Desert Tech
  • .30 cal  |  3/4×24 
  • .30 cal  |  5/8×24
FNH
  • FN 15  |  1/2×28
  • SCAR 16  |  1/2×28
  • SCAR 17  |  5/8×24 SCAR17 R3 Flash Hider
  • SCAR 20S  |  5/8×24 SCAR17 R3 Flash Hider
H&K
  • MR556A1  |  1/2×28
  • MR762A1  |  15×1
  • HK91 |  15×1
IWI
  • 5.56  |  1/2×28
  • 300BLK  |  5/8×24  SCAR17 R3 Flash Hider 
Knight Armament Company
  • SR25  |  3/4×24
Rock River Arms
  • 350 Legend  |  1/2×36
Ruger
  • Mini 14  |  9/16×24 (pre-2009)
  • 350 Legend |  1/2×28
  • 450 Bushmaster  |  11/16×24 (Fixed Mount for the Obsidian45)
Sako
  • .30 cal | 18×1
Tikka
  • T3x  |  5/8×24
  • T3 Compact Tac  |  5/8×24
  • T3 TAC  |  18×1
Winchester
  • 350 Legend  |  11/16×24

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