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Threads


 
  • Barrel thread length required for a SUS-TAC suppressor between 15mm to 20mm. If your have a thread which is not in this spec, please contact us for a solution.
  • Barrel thread should have a square shoulder to allow the suppressor to be tightened onto.
  • It threading is required, it is recommended that the thread be approximately minimum of 2mm smaller than the OD of the barrel. This allows a decent square edge for the suppressor to seat on. Beware that the thread must not be too small to reduce the wall thickness of the barrel to a value that sacrifice the strength of the weapon.
  • Accurate threading done by a competent gunsmith to make sure suppressor is concentric to the barrel bore.
  • SUS-TAC will not accept responsibility for damage caused by incorrect installation
  
THREAD SIZES
SIZE BW1025
BW1032
 BW3040
BW3040BR
 BW3045
BW3045BR
 BW3055BR BW3065BR
M12 x 1    - Yes Yes - -
M13 x 1     - Yes Yes - -
M14 x 1     - Yes Yes - -
M14 x 1.25 - Yes Yes - -
M14 x 1.5  - Yes Yes - -
M15 x 1     - Yes Yes - -
M16 x 1     - Yes Yes Yes -
M16 x 1.25 - Yes Yes Yes -
M16 x 1.5  - Yes Yes Yes -
M17 x 1     - Yes Yes - -
M18 x 1     Yes Yes Yes Yes Yes
M18 x 1.5  - Yes Yes - -
M20 x 1     - Yes Yes Yes Yes
M20 x 1.5  - Yes Yes Yes Yes
M22 x 1     - Yes Yes Yes Yes
M24 x 1.5  - - - Yes Yes
M25 x 1.5  - - - Yes Yes
M26 x 1.5  - - - Yes Yes
  -        
1/2" - 20 UNF Yes Yes Yes - -
1/2" - 28 UNEF Yes Yes Yes - -
9/16" - 18 UNF - Yes Yes Yes -
9/16" - 24 UNEF - Yes Yes Yes -
9/16" - 24 UNEF, LH - Yes Yes - -
5/8" - 24 UNEF - Yes Yes Yes Yes
3/4" - 20 UNEF - - -  - -
7/8" - 14 UNF - - - - -
7/8" - 20 UNEF - - - - -
1" - 20 UNEF - - - - -
           
 * Note that other threads can be produced on special request       
 



BARREL THREAD SPECIFICATIONS AND TOLERANCES
SIZE MAJOR DIAMETER GAUGE
CLASS		 THREAD
PITCH
MAX MEDIAN MIN
M12 x 1    11.97 11.88 11.79 6g 1.000
M13 x 1      12.97 12.88 12.79 6g 1.000
M14 x 1     13.97 13.88 13.79 6g 1.000
M14 x 1 LH 13.97 13.88 13.79 6g 1.000
M15 x 1     14.97 14.88 14.79 6g 1.000
M16 x 1     15.97 15.88 15.79 6g 1.000
M17 x 1     16.97 16.88 16.79 6g 1.000
M18 x 1     17.97 17.88 17.79 6g 1.000
M20 x 1     19.97 19.88 19.79 6g 1.000
M20 x 1 LH     19.97 19.88 19.79 6g 1.000
M20 x 1.5  19.97 19.85 19.73 6g 1.500
M22 x 1     21.97 21.88 21.79 6g 1.000
M24 x 1  23.97 23.88 23.79 6g 1.000
M25 x 1  24.97 24.88 24.79 6g 1.000
M25 x 1.5  24.97 24.85 24.73 6g 1.500
M26 x 1  25.97 25.88 25.79 6g 1.000
M28 x 1  27.97 27.88 27.79 6g 1.000
M30 x 1  29.97 29.88 29.79 6g 1.000
M32 x 1  31.97 31.88 31.79 6g 1.000



BARREL THREAD SPECIFICATIONS AND TOLERANCES
SIZE MAJOR DIAMETER GAUGE
CLASS		 THREAD
PITCH
MAX MEDIAN MIN
1/2" - 20 UNF 0.5000 0.4960 0.4919 - 1.270
1/2" - 28 UNEF 0.5000 0.4960 0.4919 - 0.907
9/16" - 18 UNF 0.5626 0.5580 0.5535 - 1.411
9/16" - 24 UNEF 0.5626 0.5580 0.5535 - 1.058
9/16" - 24 UNEF, LH 0.5626 0.5584 0.5539 - 1.058
5/8" - 24 UNEF 0.6250 0.6207 0.6163 - 1.058
3/4" - 20 UNEF 0.7500 0.7453 0.7406  - 1.270
7/8" - 14 UNF 0.8750 0.8699 0.8647 - 1.411
7/8" - 20 UNEF 0.8750 0.8699 0.8647 - 1.270
1" - 20 UNEF 1.000 0.9943 0.9886 - 1.270
           
 * Note that other threads can be produced on special request