Myers Hub Brochure Rev4 1000484569 Catalog

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Myers™ Hubs

The broadest, most complete offering for terminating

Rigid/IMC to a box or enclosure

2

Myers™ Hubs

The Original! Often imitated, never duplicated! Available in a wide range

of sizes, materials and ratings to meet virtually any customer application!

Myers™ is the industry leader others have

attempted to duplicate but is unparalleled

in selection, capability and dependability.

In addition to being the most recognized

brand of hub on the market, Myers offers

larger stainless hub trade sizes, aluminum

hubs, ATEX approved hubs, cap-offs,

drains, and more!

Applications:

• Myers hubs are used in the termination of electrical circuits through wall of the enclosure

• Designed for use indoors or outdoors with rigid conduit and IMC

•  Ideal for pharmaceutical, chemical and food processing, pulp/paper, nuclear, solar and commercial construction

applications

• Suitable for use in environmentally demanding applications, including those with the presence of chemicals, such as

acetic, citric and salt water

• Suitable for use in hazardous (classified) locations

Features:

• Wide range of styles, trade sizes and materials to meet customer requirements and preferences

• Multiple certifi cations provide users peace of mind

• Easy installation and smooth pulling service for labor savings

• Tapered female threads for rigid/IMC conduit, NPSM male threads

• NEC/CEC:

Class I, Division 2

Class II, Division 1 & 2

Class III, Division 1 & 2

Class I, Zone 1, AEx e II

Class I, Zone 1, Ex e II

• UL Listed - UL Standard 514B

• CSA Certifi ed - Certifi ed by UL to CSA Standard C22.2

No. 18

• NEMA Type 2, 3, 3R, 4, 4X, 12 (std & ground hub)

• IEC:

• ATEX Certifi ed to EN60079-0:2009, EN60079-7:2007 and

EN60079-14 Standards

• ATEX Certifi ed ITS12ATEX47591X II 2G Ex e IIC Gb Ta

(-15°C to120°C)

• IECEx Certifi ed IECEX ETL 12.0009X to IEC 60079-

0:2007-10, Edition 5 and IEC 60079-7:2006-07, Edition 4

IECEx-Ex e II Gb Ta (-15°C to 120°C)

• IP66

Certifi cations and Compliances:

• Nut: Zinc (Zamek-2, Zamek-3),

Aluminum (Al 360), Stainless (316)

• Body: Zinc (Zamek-2, Zamek-3),

Aluminum (Al 360), Stainless (316)

• Insuliner: Lexan

• O-Ring: Gasket Vi Ton

• Ground Screw: Steel/Stainless Steel

Standard Finishes:

• Aluminum: Natural

• Zinc: Natural

• Stainless: Natural

Standard Materials:

3

ATEX Rated Hub

Hub is listed for use in hazardous

(classifi ed) locations to

IECEx-ATEX certifi cations. Ideal

for global requirements and OEM’s

shipping material worldwide.

Vibration-proof - Strong, oversize nut with radial serrations assures fl ush

installation and positive grounding.

Grounding Screw for added safety.

Captive O-Ring Gasket - Impervious to corrosive moisture and petroleum

products. Gasket assures positive water and dust-tight installations.

Precision Machine Cut NPT Threads - Positive fi t and simple installation.

No Welding - Unique serrations on both nut and hub bite into metal

assuring a positive electrical ground. (UL approved for use with service

entrance conduit).

Posi-Lok Insulated Throat - Cannot come out. Standard in sizes from 1/2”

through 4”.

Ground Hub

Combines all of the features of

the Hub Basic Scru-Tite® plus the

additional feature of the grounding

screw on the locknut.

Hub Basic Scru-Tite®

Hubs are ideal for general use with

rigid conduit. Provides positive seal

and electrical ground.

Through-Bulkhead

Fitting

Hubs are

the perfect

method for

installing

hubs on

cast boxes

or through

thicker

walls.

Drain Plugs

Designed to install in the

bottom of an enclosure

to drain any accumulated

condensation. Available in

aluminum or stainless

steel construction.

Cap-Off

Designed to install in

enclosure to provide

environmental cap

for unused entries or

knockouts.

Metric to NPT

Adapter

Used to convert a

threaded metric entry

to a NPT entry.

A

B

C

D

E

F

Design Features

V

V

V

V

V

V

V

i

A

G

G

G

B

C

p

C

P

p

D

N

a

E

P

P

t

F

Available in

trade sizes

3/8” through 6”

Available in

trade sizes

1/2” through 6”

Available in

trade sizes

1/2” through 4”

4

Myers™ Hubs

UL File No. E-27258

†Optional Nickel-Chrome Plate Finish. Add suffix -CP.

*Not supplied with insulator.

Cat.# Size

Unit

Qty.

ST 03† 3/8”25

ST 1† 1/2”25

ST 2† 3/4”25

ST 3† 1” 25

ST 4† 11/4”10

ST 5† 11/2”10

ST 6† 2” 10

ST 7† 21/2”5

ST 8 3” 2

ST 9 31/2”2

ST 10 4” 2

ST 11* 5” 1

ST 12* 6” 1

Cat.# Size

Unit

Qty.

STA 1 1/2”25

STA 2 3/4”25

STA 3 1” 25

STA 4 11/4”10

STA 5 11/2”10

STA 6 2” 10

STA 7 21/2”5

STA 8 3” 2

STA 9 31/2”2

STA 10 4” 2

STA 11* 5” 1

STA 12* 6” 1

*Not supplied with insulator.

Hub Basic Scru-Tite®

NEMA 2, 3, 3R, 4, 4X and 12

Ground Hub

NEMA 2, 3, 3R, 4, 4X and 12

Max. Copper

Ground Wire Size

Cat.# Size

Unit

Qty. CSA‡ UL‡

STG 1 1/2”25 #8#8

STG 2 3/4”25 #8#8

STG 3 1” 25 #8 #8

STG 4 11/4”10 #8#8

STG 5 11/2”10 #6#8

STG 6 2” 10 #4 #8

STG 7 21/2” 5 #2 #6

STG 8 3” 2 1 / 0 #6

STG 9 31/2” 2 2 / 0 #6

STG 10 4” 2 2 / 0 #4

STG 11* 5” 1 2 / 0 #2

STG 12* 6” 1 3 / 0 #1

*Not supplied with insulator.

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

Zinc

Max. Copper

Ground Wire Size

Cat.# Size

Unit

Qty. CSA‡ UL‡

STAG 1 1/2”25 #8#8

STAG 2 3/4”25 #8#8

STAG 3 1” 25 #8 #8

STAG 4 11/4”10 #8 #8

STAG 5 11/2”10 #6 #8

STAG 6 2” 10 #4 #8

STAG 7 21/2” 5 #2 #6

STAG 8 3” 2 1 / 0 #6

STAG 9 31/2” 2 2 / 0 #6

STAG 10 4” 2 2 / 0 #4

STAG 11* 5” 1 3 / 0 #2

STAG 12* 6” 1 3 / 0 #1

*Not supplied with insulator.

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

Aluminum

Zinc

UL File No. E-27258

Aluminum

UL File No. E-59509

Stainless Steel

Type 316

UL File No. E-59509

UL File No. E-59509

Cat.# Size

Unit

Qty.

SSTG 1 1/2”10

SSTG 2 3/4”10

SSTG 3 1” 10

SSTG 4 11/4”5

SSTG 5 11/2”5

SSTG 6 2” 5

SSTG 7 21/2”2

SSTG 8 3” 2

SSTG 9 31/2”2

SSTG 10 4” 2

Max. Copper

Ground Wire Size

CSA‡ UL‡

#8 #8

#8 #8

#8 #8

#8 #8

#6 #8

#4 #8

#2 #6

1 / 0 #6

2 / 0 #6

2 / 0 #4

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

5

Class I, Zone 1, AEx e II

Class I, Zone 1, Ex e II

ATEX Hazardous Location Hub

with Increased Safety Ground Terminal

NEMA 2, 3, 3R, 4, 4X and IP66

Zinc

Cat.# Size Unit Qty.

STGK 1 1/2”10

STGK 2 3/4”10

STGK 3 1” 10

STGK 4 11/4”5

STGK 5 11/2”5

STGK 6 2” 5

STGK 7 21/2”2

STGK 8 3” 2

STGK 9 31/2”2

STGK 10 4” 2

Max. Copper

Ground Wire Size

CSA‡ UL‡

#8 #8

#8 #8

#8 #8

#8 #8

#6 #8

#4 #8

#2 #6

1 / 0 #6

2 / 0 #6

2 / 0 #4

Stainless Steel

Max. Copper

Ground Wire Size

Cat.# Size Unit Qty.

SSTGK 1 1/2”10

SSTGK 2 3/4”10

SSTGK 3 1” 10

SSTGK 4 11/4”5

SSTGK 5 11/2”5

SSTGK 6 2” 5

SSTGK 7 21/2”2

SSTGK 8 3” 2

SSTGK 9 31/2”2

SSTGK 10 4” 2

CSA‡ UL‡

#8 #8

#8 #8

#8 #8

#8 #8

#6 #8

#4 #8

#2 #6

1 / 0 #6

2 / 0 #6

2 / 0 #4

ATEX and IEC Ex Approval with

INTERTEK SEMKO ITS12ATEX47591X

IECEx ETL 12.0009X

II 2 G Ex e IIC Gb Ta (-15°C to 120°C)

Cat.# Size Unit Qty.

STTBA 1 1/2”5

STTBA 2 3/4”5

STTBA 3 1” 5

STTBA 4 11/4”5

STTBA 5 11/2”5

STTBA 6 2” 5

STTBA 7 21/2”4

STTBA 8 3” 2

Cat.# Size Unit Qty.

STTB 1 1/2”5

STTB 2 3/4”5

STTB 3 1” 5

STTB 4 11/4”5

STTB 5 11/2”5

STTB 6 2” 5

STTB 7 21/2”4

STTB 8 3” 2

STTB 9 31/2”2

STTB 10 4” 2

Through-Bulkhead Fitting

Zinc

Aluminum

Cat.# Size Unit Qty.

STTTBA 1 1/2”5

STTTBA 2 3/4”5

STTTBA 3 1” 5

STTTBA 4 11/4”5

STTTBA 5 11/2”5

STTTBA 6 2” 5

Cat.# Size Unit Qty.

STTTB 1 1/2”5

STTTB 2 3/4”5

STTTB 3 1” 5

STTTB 4 11/4”5

STTTB 5 11/2”5

STTTB 6 2” 5

Packaged as two pieces unassembled

Through-Bulkhead Fitting

without Nipples

Zinc

Packaged as two pieces unassembled

Aluminum

IECEx - Ex e II Gb Ta (-15°C to 120°C)

II 2 G Ex e IIC Gb Ta (-15°C to 120°C)

IECEx - Ex e II Gb Ta (-15°C to 120°C)

UL File No. E-27258

UL File No. E-27258

UL File No. E-27258

UL File No. E-27258

UL File No. E-187273

Class I, Zone 1, AEx e II

Class I, Zone 1, Ex e II

UL File No. E-187273

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

6

Myers™ Hubs

UL File No. E-27258

Cat.# Size Unit Qty.

SSTC 1 1/2”25

SSTC 1CD 1/2”10

UL File No. E-27258

Note: The Myers metric to NPT hub adapter is used to convert a threaded

metric entry to a NPT entry. The female thread is NPT and the male

thread is metric.

Cat.# Size Unit Qty.

STM 1 M20 to 1/2”25

STM 2 M25 to 3/4”25

STM 3 M32 to 1” 25

STM 4 M40 to 11/4”10

STM 5 M50 to 11/2”10

STM 6 M63 to 2” 10

Cat.# Size Unit Qty.

SSTM 1 M20 to 1/2”10

SSTM 2 M25 to 3/4”10

SSTM 3 M32 to 1” 10

SSTM 4 M40 to 11/4”5

SSTM 5 M50 to 11/2”5

SSTM 6 M63 to 2” 5

Metric to NPT Adapter

Zinc

Stainless Steel

Non-Hazardous Drain Plug

Stainless Steel

SSTC 1 SSTC 1CD

Note: SSTC 1 and STAC 1ST are for knockouts and are supplied with a

locknut and straight threads.

SSTC 1CD and STAC 1CD are for threaded openings and are

supplied without locknut and NPT threads. Not gasketed to allow for

water drainage.

Cat.# Size Unit Qty.

STAC 1ST 1/2”25

STAC 1CD 1/2”25

UL File No. E-27258

Aluminum

SSTC 1 SSTC 1CD

Cat.# Size Unit Qty.

STC 1 1/2”25

STC 2 3/4”25

STC 3 1” 25

STC 4 11/4”10

STC 5 11/2”10

STC 6 2” 10

Cat.# Size Unit Qty.

STAC 1 1/2”25

STAC 2 3/4”25

STAC 3 1” 25

Aluminum

Cap-Off

Zinc

UL File No. E-27258

Max. Copper

Grd. Wire Size

Cat.# Size

Unit

Qty. CSA UL

STGN 1 1/2”25 #8#8

STGN 2 3/4”25 #8#8

STGN 3 1” 25 #8 #8

STGN 4 11/4”10 #8#8

STGN 5 11/2”10 #6#8

STGN 6 2” 10 #4 #8

UL File No. E-59509

Ground Nut

Max. Copper

Grd. Wire

Size

Cat.# Size Unit Qty. CSA UL

STAGN 1 1/2”25 #8#8

STAGN 2 3/4”25 #8#8

STAGN 3 1” 25 #8 #8

STAGN 4 11/4”10 #8#8

STAGN 5 11/2”10 #6#8

STAGN 6 2” 10 #4 #8

Aluminum

Zinc

UL File No. E-59509

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

‡Use of wire terminal is required by CSA & recommended by UL for wire gauges over 10 AWG.

7

“D” dimension indicates maximum panel thickness hub will accommodate.

CONDUIT OR PIPE SIZE

Dimensions

Spacing Chart

Size A B C D

E

FG HMin. Max. Min. Max.

3/813/211/821/32 1/8.468 .493 3/8 NPT 3/8 NPSM 60° 43/64 11/16

1/2111/32 17/16 13/16 3/16 .591 .622 1/2 NPT 1/2 NPSM 60° 55/64 7/8

3/4115/32 123/32 29/32 3/16 .783 .824 3/4 NPT 3/4 NPSM 60° 11/16 11/8

11

21/32 21

1/32 1/4.997 1.049 1 NPT 1 NPSM 60° 121/64 13/8

11/4111/16 23/811/32 1/41.311 1.380 11/4 NPT 11/4 NPSM 60° 143/64 13/4

11/2111/16 23/411/32 1/41.529 1.610 11/2 NPT 11/2 NPSM 60° 159/64 2

21

3/431/413/32 1/41.964 2.067 2 NPT 2 NPSM 60° 225/64 21/2

21/227/32 33/419/32 1/42.346 2.469 21/2 NPT 21/2 NPSM 60° 257/64 3

32

5/16 43/813/81/42.915 3.068 3 NPT 3 NPSM 45° 333/64 35/8

31/223/851

7/16 1/43.371 3.548 31/2 NPT 31/2 NPSM 45° 41/64 41/8

42

7/16 51/211/21/43.825 4.026 4 NPT 4 NPSM 45° 433/64 45/8

52

15/16 67/821/44.795 5.047 5 NPT 5 NPSM 45° 537/64 511/16

63 7

11/16 25/16 5.762 6.065 6 NPT 6 NPSM 45° 641/64 63/4

K

(Mounting Hole)

Conduit

Size

1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6

3/8 1-5/32 1-1/4

1/2 1-5/16 1-13/32 1-9/16 .

3/4 1-7/16 1-17/32 1-11/16 1-13/16

1 1-9/32 1-11/16 1-27/32 1-31/32 2-1/8

1-1/4 1-25/32 1-7/8 2-1/32 2-5/32 2-5/16 2-1/2

1-1/2 1-31/32 2-1/16 2-7/32 2-11/32 2-1/2 2-11/16 2-7/8

2 2-7/32 2-5/16 2-15/32 2-19/32 2-3/4 2-15/16 3-1/8 3-3/8

2-1/2 2-15/32 2-9/16 2-23/32 2-27/32 3 3-3/16 3-3/8 3-5/8 3-7/8

3 2-25/32 2-7/8 3-1/32 3-5/32 3-5/16 3-1/2 3-11/16 3-15/16 4-3/16 4-1/2

3-1/2 3-3/32 3-3/16 3-11/32 3-15/32 3-5/8 3-13/16 4 4-1/4 4-1/2 4-13/16 5-1/8

4 3-11/32 3-7/16 3-19/32 3-23/32 3-7/8 4-1/16 4-1/4 4-1/2 4-3/4 5-1/16 5-3/8 5-3/4

5 4-1/32 4-1/8 4-9/32 4-13/32 4-9/16 4-3/4 4-15/16 5-3/16 5-7/16 5-3/4 6-1/16 6-3/16 7-1/8

6 4-13/32 4-1/2 4-21/32 4-25/32 4-15/16 5-1/8 5-5/16 5-9/16 5-13/16 6-1/8 6-7/16 6-11/16 7-3/8 7-3/4

19/32 11/16 27/32 31/32 1-1/8 1-5/16 1-1/2 1-3/4 2 2-5/16 2-5/8 2-7/8 3-9/16 3-15/16

Minimum space from center of pipe or conduit to nearest obstruction.

1. Dimensions in top row (boxed squares) are centers for conduits of same size.

Example: How close may 3” conduits be spaced? Answer 41/2”

2. Dimensions in light blue shaded squares are for centers of conduits

NOT of the same size. Example: What is the minimum spacing for 2”

and 3/4” conduit? Read down column marked 2” to figure opposite 3/4”

and find dimensions is 219/32”.

Note. Minimum spacing dimensions as shown will give

approximately 1/8” clearance between locking nuts.

For more information:

If further assistance is required, please contact an authorized Cooper Crouse-Hinds Distributor,

Sales Offi ce, or Customer Service Department.

U.S. (Global Headquarters):

Cooper Crouse-Hinds

Wolf & Seventh North Streets

Syracuse, NY 13221

(866) 764-5454

FAX: (315) 477-5179

FAX Orders Only: (866) 653-0640

crouse.customerctr@cooperindustries.com

Europe (Germany):

Cooper Crouse-Hinds GmbH

49 (0) 6271 806-500

49 (0) 6271 806-476

info-ex@ceag.de

China:

Cooper Crouse-Hinds Pte. Ltd.

86-21-2899-3600

FAX: 8-21-2899-4055

cchsales@cooperindustries.com

India:

Cooper India Pvt. Ltd.

91-124-4683888

FAX: 91-124-4683899

cchindia@cooperindustries.com

Canada:

Cooper Crouse-Hinds Canada

Toll Free: (800) 265-0502

FAX: (800) 263-9504

FAX Orders Only: (866) 653-0645

Middle East (Dubai):

Cooper Crouse-Hinds LLC

971 4 4272500

FAX: 971 4 4298521

Korea:

Cooper Crouse-Hinds Korea

82-2 3484-6783

82-2-3484-6778

CCHK-sales@cooperindustries.com

Mexico/Latin America/Caribbean:

Cooper Crouse-Hinds, S.A. de C.V.

52-555-804-4000

FAX: 52-555-804-4020

mxmercadotecnia@cooperindustries.com

Singapore:

Cooper Crouse-Hinds Pte. Ltd.

65-6297-4849

FAX: 65-6297-4819

chsi-sales@cooperindustries.com

Australia:

Cooper Electrical Australia

61-2-8787-2777

FAX: 61-2-9609-2342

CEASales@cooperindustries.com

www.crouse-hinds.com

Cooper Crouse-Hinds is a registered trademark of Cooper Industries, Inc.

©2012 Cooper Industries, Inc.

Your Authorized Cooper Crouse-Hinds Distributor is:

Cooper Industries, Ltd.

600 Travis, Ste. 5800

Houston, TX 77002-1001

P: 713-209-8400

www.cooperindustries.com

5057-1112 Printed in USA