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1-800-526-4182 • 732-286-1800 (NJ) • FAX: 732-244-8843 • www.heyco.com

“Stay Connected” with

Strain Relief Bushings

®

Straight-Thru for Flat Cables

.375˝ (9,5 mm) to .500˝ (12,7 mm) Mounting Holes

electronic products by absorbing the

forces of pull, push, and twist that may

be exerted on the flexible power cord.

protects cable at panel entry points.

panel available: SR 4A-6 & SR 3A-4.

See charts for details.

Mounting Hole Plugs which can be

used to fill blank/unused Mounting

Holes and thus allow for a single panel

design for multiple applications.

and sizes.

assembly tools.

see page 4-30.

B

A

MOUNTING HOLE

C

C

*To install strain reliefs for .040˝ (1,0 mm)

maximum panel thickness, use

Part #0021 (No. R 291) Hand Pliers.

WILL FIT THESE CABLES

PANEL DIMENSIONS

PART NO. DESCRIPTION

PART DIM.

Mounting

UL Type

AWG/

Approximate

A

B

Finished

C

Hole Plug

Conductors

Size

Mounting

To Prevent

Fit Panel

Black

BODY

Hole Dia.

Rotation

Thickness*

LENGTH

in.

mm.

in.

mm.

in.

mm.

in.

mm.

in.

mm.

PART NO.

300 OHM

20/2

.06 x .40 1,5 x 10,2 .375

9,5

22/2

SPT-1

18/2

.12 x .30

3,0 x 7,6

.375

9,5

18/3

.390

9,9

.625-

15,9-

18/2

.15 x .40 3,8 x 10,2

.415

10,5

.640

16,3

.100

2,5

1814

SR 302-1**

.469

18/3

.422

10,7

SPT-2

16/2

.16 x .41 4,1 x 10,4

.422

10,7

16/3

.437

11,1

Same as SR 302-1 above except

.156

4,0

1804

SR 300-1

.469

CLOCK,

20/2

.09 x .18

2,3 x 4,6

X & XT

.375

9,5

.345

8,8

.062

1,6

1017

SR 2P-4

.406

10,3

2617

SPT-1

18/2

.11 x .21

2,8 x 5,3

Same as SR 2P-4 above except

.125

3,2

1034

SR 2L-1

.406

10,3

2617

SPT-1

18/2

.12 x .22

3,0 x 5,6 .437

11,1

.390

9,9

.040

1,0

1074

SR 3A-4

.406

10,3

2488

***

.062

1,6

1077

SR 3P-4

.406

10,3

2488

Same as SR 3A-4 above except

.100

2,5

1104

SR 3W-1

.156

4,0

1094

SR 3L-1

.406

SPT-1,

SPT-2

18/2

.12 x .22

3,0 x 5,6 .500

12,7

.445

11,3

.100

2,5

1130

SR 4P-4

.440

11,2

2491

& HPN

SPT-1

18/3

.12 x .30

3,0 x 7,6

SPT-2

18/2

.15 x .28

3,8 x 7,1

.500

12,7

.445

11,3

.062

1,6

1120

SR 4N-4

.406

10,3

2491

& HPN

Same as SR 4N-4 above except

.100

2,5

1117

SR 4K-4

.406

10,3

2491

.156

4,0

1127

SR 4L-4

.406

SPT-1

18/3

.12 x .30

3,0 x 7,6

SPT-2

18/2

.15 x .28

3,8 x 7,1

.500

12,7

& HPN

.460

11,7

.095

2,4

1114

SR 4K-1

.500

12,7

2491

HPN

18/3

.15 x .34

3,8 x 8,6

.500- 12,7-

SPT-2

HPN

16/2

.16 x .30

4,1 x 7,6 .515

13,1

Same as SR 4K-1 above except

.187

4,7

1124

SR 4L-1

.500

Standard color black. Consult Heyco for white and other colors.

Wire is not UL/CSA approved.

* Maximum Panel Thickness. Part has additional clearance. Consult Heyco for your Custom Finished Fit Panel Thickness.

**Use Elongated Mounting Hole.

***To install Strain Reliefs for .040˝ (1,0 mm) Maximum Panel Thickness use Part No. 0021 (No. R 291) Hand Pliers.

Material

Nylon 6/6

Certifications

Recognized under the Component Program of Underwriters’ Laboratories

File E15331

Certified by the Canadian Standards Association File 8919

Flammability Rating

94V-2

Temperature Range

-.04°F (-18°C) to 221°F (105°C)