Notes: Dims. in inches & (millimeters). Shaft size is last 3 digits of Model No.
42008 SERIES
Square serrations with plastic insert and line indicator on side
Note: 420081A1/8 & 420081A1/4 have only one set screw.
MODEL (Color-natural) MODEL (Color-black)
A
B
C
D
E
F
G
420081A1/8*
420081A1/4*
420083A1/4
420085A1/4
420087A1/4
420081B1/8*
420081B1/4*
420083B1/4
420085B1/4
420087B1/4
.500 (12.7)
.500 (12.7)
.748 (19.0)
.940 (23.9)
1.248 (31.7)
.402 (10.2)
.402 (10.2)
.681 (17.3)
.870 (22.1)
1.165 (29.6)
.380 (9.7)
.380 (9.7)
.587 (14.9)
.709 (18.0)
.985 (25)
.402 (10.2)
.402 (10.2)
.681 (17.3)
.870 (22.1)
1.165 (29.6)
.280 (7.1)
.280 (7.1)
.280 (7.1)
.280 (7.1)
.280 (7.1)
.512 (13.0)
.512 (13.0)
.512 (13.0)
.512 (13.0)
.630 (16.0)
.630 (16.0)
.630 (16.0)
.630 (16.0)
.630 (16.0)
.630 (16.0)
* indicates solid
aluminum knob
42009 SERIES
Straight knurl with plastic insert and line indicator on top and chamfer around top
Note: Knob color is black only for this Series.
MODEL (Color black)
A
B
C
420091B1/8
420091B1/4
420092B1/4
420093B1/4
420094B1/4
.732 (18.6)
.732 (18.6)
.898 (22.8)
1.280 (32.5)
1.512 (38.4)
.374 (9.5)
.374 (9.5)
.433 (11.0)
.492 (12.5)
.531 (13.5)
.472 (12.0)
.472 (12.0)
.512 (13.0)
.551 (14.0)
.630 (16.0)
* indicates solid
aluminum knob
42011 SERIES
Smooth finish with plastic insert and line indicator on top
MODEL (Color-natural) MODEL(Color-black)
A
B
C
420111A1/8
420111A1/4
420112A1/4
420113A1/4
420114A1/4
420111B1/8
420111B1/4
420112B1/4
420113B1/4
420114B1/4
.709 (18.0)
.709 (18.0)
.874 (22.2)
1.255 (31.9)
1.488 (37.8)
.374 (9.5)
.374 (9.5)
.433 (11.0)
.492 (12.5)
.531 (13.5)
.472 (12.0)
.472 (12.0)
.512 (13.0)
.551 (14.0)
.630 (16.0)
* indicates solid
aluminum knob
42012 SERIES
Straight knurl with plastic insert and line indicator on top
U
MODEL (Color-natural)
A
B
C
420121A1/8
420121A1/4
420122A1/4
420123A1/4
420124A1/4
.732 (18.6)
.732 (18.6)
.898 (22.8)
1.280 (32.5)
1.512 (38.4)
.374 (9.5)
.374 (9.5)
.433 (11.0)
.492 (12.5)
.531 (13.5)
.472 (12.0)
.472 (12.0)
.512 (13.0)
.551 (14.0)
.630 (16.0)
* indicates solid
aluminum knob
APEM, 63 Neck Road, HAVERHILL, MA USA 01835-0788 TOLL FREE: (877) 246-7890 FAX: (978) 372-3534 E-mail: info@apem.com
U3