“Stay Connected”
with
®
Strain Relief Bushings
Heyco Original Strain Relief Bushings
®
Straight-Thru for Flat Cables
.560˝ (14,2 mm) to .875˝ (22,2 mm) Mounting Holes
WILL FIT THESE CABLES
UL Type
AWG/
Conductors
Approximate
Size
in.
SPT-2
HPN
SPT-3
SPT-2
SPT-2
& HPN
18/3
16/3
16/2
16/3
18/2
16/2
18/3
16/3
mm.
PANEL DIMENSIONS
A
B
Finished
Mounting To Prevent
Fit Panel
Hole Dia.
Rotation Thickness*
in. mm. in.
mm. in. mm.
PART NO. DESCRIPTION PART DIM.
Mounting
Black
C
Hole Plug
BODY
LENGTH
in. mm. PART NO.
.15 x .40 3,8 x 10,2
.16 x .41 4,1 x 10,4
.16 x .37 4,1 x 9,4
.16 x .42 4,1 x 10,5
.19 x .35 4,8 x 8,9
.20 x .37 5,1 x 9,4
•
Protects the lifeline of your
electric/electronic products
by
absorbing the forces of pull, push,
and twist that may be exerted on the
flexible power cord.
•
Securely anchors, insulates, and
protects cables at panel entry points.
•
Consult Heyco for other wire types
and sizes.
.562 14,3 .530
13,5 .125
3,2
1174
SR 5W-1
.609 15,5
2494
.15 x .40 3,8 x 10,2 .562 14,3 .530
.16 x .41 4,1 x 10,4
13,5 .062
1,6
1170
SR 5KN-4
.609 15,5
2494
Same as SR 5KN-4 above except
SPT-2
18/3
16/3
18/2
18/3
16/2
16/3
18/3
16/3
16/2
16/3
14/2
14/3
14/2
14/3
12/2
12/3
12/3
10/3
.15 x .40 3,8 x 10,2
.16 x .41 4,1 x 10,4
.19 x .35
.19 x .39
.20 x .37
.20 x .43
4,8 x 8,9
.560 14,2 .730
4,8 x 9,9
5,1 x 9,4
5,1 x 10,9
18,5
.125
3,2
1167
SR 5K-4
.609 15,5
2494
•
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.
•
See pages 4-27 & 4-28 for SR
assembly tools.
•
For Double D Mounting Hole Punches,
see page 4-30.
DOUBLE D MOUNTING HOLE
B
.125 3,2
1484
SR 30-1**
.672 17,1
consult Heyco
SPT-3
SPT-2
.15 x .40 3,0 x 7,6
.625 15,9 .550
.16 x .41 4,1 x 10,4
.20 x .37
.20 x .43
.24 x .42
.24 x .51
.24 x .42
.24 x .51
.29 x .51
.29 x .65
5,1 x 9,4
5,1 x 10,9
.750 19,0 .875
6,1 x 10,7
6,1 x 12,9
6,1 x 10,7
6,1 x 12,9
.875 22,2 .840
7,4 x 12,9
7,4 x 16,5
14,0 .062
.125
1,6
2,5
1160
1163
SR 6N4-4
SR 6P4-4
.578 14,7
.578 14,7
2497
2497
Same as SR 6N4-4 above except
SPT-3
22,2 .125
3,2
1504
SR 33-1**
.781 19,8
consult Heyco
A
Fit 1/2˝ Electrical Knock-out Hole
SPT-3
21,3 .125
3,2
1517
SR 34-2
.813 20,7
2509
B
SPT-3
.32 x .65 8,1 x 16,5 .875 22,2 .835
21,2 .125
3,2
1497
SR 31-2
.812 20,6
2509
A
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.
ELONGATED
MOUNTING HOLE
ELONGATED
MOUNTING HOLE
C
Material
Certifications
Flammability Rating
Temperature Range
Nylon 6/6
Recognized under the Component Program of Underwriters’ Laboratories
File E15331
Certified by the Canadian Standards Association File 8919
94V-2
-.04°F (-18°C) to 221°F (105°C)
Quick
Specs
4-18
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