Threading Guide
0.400-0.438 FOR INDEXING ON SHOULDER BEHIND THREADS
0.460 FOR INDEXING ON MUZZLE FACE.
0.56 MINIMUM
PROTRUSION
FROM SLIDE
0.450
0.025
X 45°
0.550
MINIMUM
FOR
SHOULDERING
BEHIND
THREADS
A
HOLD MUZZLE FACE PERPENDICULAR TO
BORE AXIS IF SHOULDERING ON THE MUZZLE.
0.5000-28 SPECIAL
MAJOR Ø 0.4970 ±0.0030
PITCH Ø 0.4758 ± 0.0010
0.003
A
0.0005
A
0.0005
A
A
45°
2X R0.016
0.005-0.010
X 45
DETAIL A
SCALE 8 : 1
HOLD THIS SURFACE PERPENDICULAR TO
BORE AXIS IF SHOULDERING BEHIND THE
THREADS.
NOTES:
1) CZ-75 AND BROWNING HI-POWER BARRELS ARE RIGHT AT 0.500 DIAMETER.
THESE BARRELS MUST BE THREADED SO THAT THEY INDEX ON THE MUZZLE.
2.
DO NOT USE THIS GUIDE FOR A BERETTA 92/M9
. THE BARREL DOES NOT MEET
THE 0.56 MINIMUM PROTRUSION CRITERIA. SEE SHEET 3 FOR BERETTA 92/M9.
3. THIS THREAD PROFILE CAN SHOULDER AGAINST THE MUZZLE FACE OR BEHIND
THE THREADS.
D
C
B
A
A
B
C
D
1
2
3
4
5
6
7
8
8
7
6
5
4
3
2
1
TITLE:
SIZE:
"B"
PART
NO.:
SCALE:
SHEET:
2 OF 19
THREAD GUIDE
4:1
MLS
03/13
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN THIS DRAWING IS THE
SOLE PROPERTY OF ADVANCED ARMAMENT
CORPORATION. ANY REPRODUCTION IN PART OR AS A
WHOLE WITHOUT THE WRITTEN PERMISSION OF
ADVANCED ARMAMENT CORPORATION IS PROHIBITED.
REV:
DATE:
DRAWN
BY:
Advanced Armament Corp.
2408 TECH CENTER PARKWAY, SUITE 150
LAWRENCEVILLE, GA 30043 - 770-925-9988
WWW.ADVANCED-ARMAMENT.COM
1/2-28 SPECIAL THREAD FOR
RIMFIRE AND CENTERFIRE
PISTOL CALIBER APPLICATIONS
01
.X
0.1
.XX
0.01
.XXX
0.005
.XXXX
0.0005
ANGLES
0.5
FILLET RADII 0.005-0.010
BREAK EDGE 0.005-0.010
SURFACE FINISH
125
UNLESS OTHERWISE SPECIFIED
DIMENSIONS ARE IN INCHES
GENERAL SPECIFICATION FOR
SMALL ARMS AND AIRCRAFT
ARMAMENT SUBSYSTEMS
(MIL-W-13855) APPLIES.
ASME Y14.5M-1994 APPLIES.