“Stay Connected with Heyco”
Strain Relief Bushings
Heyco Original Strain Relief Bushings
®
Right Angle for Flat Cables
WILL FIT THESE CABLES
UL Type
AWG/
Conductors
Approximate
Size
in.
SPT-1
SPT-1
SPT-2
HPN
SPT-2
& HPN
SPT-3
& HPN
HPN
SPT-2
18/2
18/3
18/2
16/2
18/3
18/2
16/2
16/3
18/3
16/3
18/2
18/3
16/2
16/3
.12x.22
.12x.30
.15x.28
.16x.30
mm.
3,0x5,6
3,0x7,6
3,8x7,1
4,1x7,6
PANEL DIMENSIONS
PART
DESC
PART DIMENSIONS
Mounting
A
B
Finished NO.
Mounting To Prevent Fit Panel Black
Hole Dia. Rotation Thickness*
in. mm. in. mm. in. mm.
.437 11,1 .390
9,9 .062
C
D
Hole Plug
HEAD
BODY
LENGTH LENGTH
in. mm. in. mm. PART NO.
5,9 .500 12,7
9,9 .687 17,5
9,9 .687 17,5
2488
2491
2491
1,6
1354
SR 13-1 .234
1,0
1361
SR 14A-1 .390
2,5
1364
SR 14-1 .390
.500 12,7 .450 11,4 .040
.100
Same as SR 14A-1 above except
.15x.40 3,8x10,2
.19x.35
.20x.37
.16x.37
4,8x8,9
5,1x9,4
4,1x9,4
.562 14,3 .525 13,3 .125
3,2
1384
SR 16-1 .500 12,7 .859 21,8
2494
•
Provides the same protection for
your power supply cable as the
straight-thru type AND...
•
Exits the cable flush against the
panel,
saving space and directing the
cable parallel to the panel.
•
Overcomes space limitations and acts
as a back or bottom bumper.
•
See page 4-38 for corresponding
Mounting Hole Plugs
which can be
used to fill blank/unused Mounting
Holes and thus allow for a single panel
design for multiple applications.
•
Consult Heyco for other wire types
and sizes.
•
See pages 4-27 & 4-28 for SR
assembly tools.
•
See page 4-25 for Quick Specs.
.15x.40 3,8x10,2
.16x.41 4,1x10,4
.19x.35 4,8x8,9 .560 14,2 .730 18,5
.080
.19x.39 4,8x9,9 **
**
**
**
.20x.37 5,1x9,4
.20x.43 5,1x10,9
.125
2,0
1424
SR 20-1
.406 10,3 .812 20,6
**
consult Heyco
SPT-3
Same as SR 20-1 above except
16/2
16/3
14/2
14/3
14/2
14/3
12/3
12/3
10/3
3,2
1434
SR 20L-1
.406 10,3 .812 20,6
**
SR 23-1
.484 12,3 .937 23,8
**
consult Heyco
SPT-3
.20x.37 5,1x9,4
.20x.43 5,1x10,9 .750 19,9 .875 22,2
.125
.24x.42 6,1x10,7 ** **
**
**
.24x.51 6,1x13,0
.24x.42
.24x.51
.29x.51
.29x.65
6,1x10,7
6,1x13,0
.875 22,2 .840 21,3 .125
7,4x13,0
7,4x16,5
3,2
1454
consult Heyco
Fit 1/2˝ and 3/4˝ Electrical Knock-out Hole Sizes
SPT-3
3,2
1464
SR 24-1 .500 12,7 .968 24,6
2509
SPT-3, SRD
& SRDT
.32x.66 8,0x16,8 1.093 28,0 1.000 25,4 .125
3,2
1440
SR 21-2 .734 18,6 1.437 36,5
2717
Standard color black. Consult Heyco for white and other colors.
*Maximum Panel Thickness. Part has additional clearance. Consult Heyco for your Custom Finished Fit Panel Thickness.
**Use Elongated Mounting Hole.
B
B
A
A
MOUNTING HOLES
C
D
1-800-526-4182 • 732-286-1800 (NJ) • FAX: 732-244-8843 • www.heyco.com
4-26