section d-hardware-html.html

BURNDY

US: 1-800-346-4175

www.burndy.com

Canada: 1-800-387-6487

Hardware

DURIUM™ BOLT

SILICON BRONZE

BURNDY

introduced silicon-bronze bolts, nuts

and other hardware items on outdoor connector

applications in 1927. Today the DURIUM™

trademark is a standard for this use. DURIUM™

bolts combine high strength with corrosion

resistance. Heads have American Standard

HARDWARE DATA

RECOMMENDED

TIGHTENING TORQUE

The hardware used in connectors must be

compatible with the connector material, have high

mechanical strength and be corrosion resistant

and correspond to NEMA recommendations.

Copper alloy connectors have hardware made

of DURIUM™, which is BURNDY’s trade name

for silicon bronze alloy ASTMB99 type B. This

material was first introduced by BURNDY

in 1927

for use in outdoor construction, and today, is the

standard throughout the industry.

Catalog Number

Thread

Size

B Length

(Inches)

25X50HEBBOX

1/4-20

1/2

25X62HEBBOX

1/4-20

5/8

25X75HEBBOX

1/4-20

3/4

25X100HEBBOX

1/4-20

25X125HEBBOX

1/4-20

1-1/4

25X150HEBBOX

1/4-20

1-1/2

25X200HEBBOX

1/4-20

25X250HEBBOX

1/4-20

2-1/2

25X300HEBBOX

1/4-20

31X50HEBBOX

5/16-18

1/2

31X62HEBBOX

5/16-18

5/8

31X75HEBBOX

5/16-18

3/4

31X100HEBBOX

5/16-18

31X125HEBBOX

5/16-18

1-1/4

31X150HEBBOX

5/16-18

1-1/2

31X175HEBBOX

5/16-18

1-3/4

31X200HEBBOX

5/16-18

31X250HEBBOX

5/16-18

2-1/2

31X300HEBBOX

5/16-18

38X50HEBBOX

3/8-16

1/2

38X62HEBBOX

3/8-16

5/8

38X75HEBBOX

3/8-16

3/4

38X88HEBBOX

3/8-16

7/8

38X100HEBBOX

3/8-16

Catalog Number

Thread

Size

B Length

(Inches)

38X125HEBBOX

3/8-16

1-1/4

38X150HEBBOX

3/8-16

1-1/2

38X175HEBBOX

3/8-16

1-3/4

38X200HEBBOX

3/8-16

38X225HEBBOX

3/8-16

2-1/4

38X250HEBBOX

3/8-16

2-1/2

38X275HEBBOX

3/8-16

2-3/4

38X300HEBBOX

3/8-16

38X325HEBBOX

3/8-16

3-1/4

38X350HEBBOX

3/8-16

3-1/2

38X400HEBBOX

3/8-16

38X450HEBBOX

3/8-16

4-1/2

38X500HEBBOX

3/8-16

44X150HEBBOX

7/16-14

1-1/2

44X200HEBBOX

7/16-14

50X75HEBBOX

1/2-13

3/4

50X100HEBBOX

1/2-13

50X125HEBBOX

1/2-13

1-1/4

50X150HEBBOX

1/2-13

1-1/2

50X175HEBBOX

1/2-13

1-3/4

50X200HEBBOX

1/2-13

50X225HEBBOX

1/2-13

2-1/4

50X250HEBBOX

1/2-13

2-1/2

50X275HEBBOX

1/2-13

2-3/4

dimension and the threads are per American

National Coarse Series, Class #2 fit. The silicon

Catalog Number

Thread

Size

B Length

(Inches)

50X300HEBBOX

1/2-13

50X325HEBBOX

1/2-13

3-1/4

50X350HEBBOX

1/2-13

3-1/2

50X375HEBBOX

1/2-13

3-3/4

50X400HEBBOX

1/2-13

50X450HEBBOX

1/2-13

4-1/2

50X500HEBBOX

1/2-13

50X550HEBBOX

1/2-13

4-1/2

50X600HEBBOX

1/2-13

62X100HEBBOX

5/8-11

62X125HEBBOX

5/8-11

1-1/4

62X150HEBBOX

5/8-11

1-1/2

62X175HEBBOX

5/8-11

1-3/4

62X200HEBBOX

5/8-11

62X225HEBBOX

5/8-11

2-1/4

62X250HEBBOX

5/8-11

2-1/2

62X275HEBBOX

5/8-11

2-3/4

62X300HEBBOX

5/8-11

62X325HEBBOX

5/8-11

3-1/4

62X350HEBBOX

5/8-11

3-1/2

62X400HEBBOX

5/8-11

62X450HEBBOX

5/8-11

4-1/2

62X500HEBBOX

5/8-11

62X600HEBBOX

5/8-11

DURIUM™ and Steel Hardware

Aluminum Hardware

Bolt Size

Rec. Torque (Inch Pounds)

Bolt Size

Rec. Torque (Inch Pounds)

1/4 - 20

1/2 - 13

300

5/16 - 18

180

5/8 - 11

480

3/8 - 16

240

3/4 - 10

650

1/2 - 13

480

5/8 - 11

660

3/4 - 10

1,050

Aluminum connectors generally have aluminum

alloy hardware. The bolts are 2024T4 and

anodized to resist corrosion. The nuts are 6061T6,

which is resistant to corrosion and does not require

anodizing. Both nuts and bolts are lubricated

to eliminate galling and to provide consistent

clamping forces.

To reduce or greatly exceed the recommended

torque can adversely affect the performance of the

connector.

bronze is per ASTM B99.

D-2

BURNDY

Canada: 1-800-387-6487

www.burndy.com

US: 1-800-346-4175

Hardware

DURIUM™ NUTS

SILICON BRONZE

DURIUM™ hexagon regular nuts are non-

magnetic and are made to American Standard

dimensions. American National Coarse Series

threads. #2 fit.

Catalog Number

Thread Size

25CHENBOX

1/4-20

31CHENBOX

5/16-18

38CHENBOX

3/8-16

44CHENBOX

7/16-14

50CHENBOX

1/2-13

62CHENBOX

5/8-11

75CHENBOX

3/4-10

100CHENBOX

1-8

DURIUM™ FLAT WASHERS

SILICON BRONZE

High strength DURIUM™ Flat Washers are non-

magnetic and free from galvanic action when in

contact with copper. Conforms to SAE standards.

DURIUM™ SPLIT

LOCKWASHERS

SILICON BRONZE

DURIUM™ spring type lockwasher has high

resiliency and exerts constant pressure on the

face of the nut, preventing vibration from loosening

the nut.

DURIUM™ INTERNAL TOOTH

LOCKWASHERS

SILICON BRONZE

DURIUM™ Internal Tooth Lockwashers are

available as illustrated. The teeth are twisted

slightly and present biting edges which grip the

nut and the part being clamped, preventing the nut

from backing off.

Catalog Number

For Bolt Size

Nominal Dimensions in Inches

25FWBOX

1/4

1/16

5/8

31FWBOX

5/16

1/16

11/16

38FWBOX

3/8

1/16

13/16

44FWBOX

7/16

1/16

15/16

50FWBOX

1/2

3/32

1-1/16

62FWBOX

5/8

3/32

1-5/16

75FWBOX

3/4

9/64

1-15/32

Catalog Number

For Bolt Size

25SWBOX

1/4

31SWBOX

5/16

38SWBOX

3/8

44SWBOX

7/16

50SWBOX

1/2

62SWBOX

5/8

75SWBOX

3/4

Catalog Number

For Bolt Size

25NWBOX

1/4

31NWBOX

5/16

38NWBOX

3/8

44NWBOX

7/16

50NWBOX

1/2

62NWBOX

5/8

75NWBOX

3/4

D-3

BURNDY

US: 1-800-346-4175

www.burndy.com

Canada: 1-800-387-6487

Hardware

ALUMINUM HARDWARE

BOLTS

BURNDY

aluminum hexagon head bolts are

manufactured of alloy 2024-T4 and are finished

with anodic coating and lubricated. Threads are

coarse series, class 2A fit.

Catalog

Number

Thread

Size

Length

(Inches)

50X150HABBOX

1/2-13

1-1/2

50X175HABBOX

1/2-13

1-3/4

50X200HABBOX

1/2-13

50X225HABBOX

1/2-13

2-1/4

50X250HABBOX

1/2-13

2-1/2

50X275HABBOX

1/2-13

2-3/4

50X300HABBOX

1/2-13

50X325HABBOX

1/2-13

3-1/4

50X350HABBOX

1/2-13

3-1/2

50X375HABBOX

1/2-13

3-3/4

50X400HABBOX

1/2-13

50X425HABBOX

1/2-13

4-1/4

50X450HABBOX

1/2-13

4-1/2

Catalog

Number

Thread

Size

Length

(Inches)

50X500HABBOX

1/2-13

50X550HABBOX

1/2-13

5-1/2

62X175HABBOX

5/8-11

1-3/4

62X200HABBOX

5/8-11

62X225HABBOX

5/8-11

2-1/4

62X250HABBOX

5/8-11

2-1/2

62X300HABBOX

5/8-11

62X350HABBOX

5/8-11

3-1/2

62X400HABBOX

5/8-11

62X450HABBOX

5/8-11

4-1/2

62X500HABBOX

5/8-11

62X550HABBOX

5/8-11

5-1/2

62X600HABBOX

5/8-11

NUTS

BURNDY

aluminum nuts are manufactured of

alloy 6061-T6, are finished type, coarse thread,

class 2B fit.

Catalog

Number

Thread

Size

50HANBOX

1/2-13

62HANBOX

5/8-11

FLAT WASHERS

BURNDY

aluminum flat washers are

manufactured of alloy 2024-T4 and are medium

design.

Catalog

Number

Description

For Bolt

Size

50FWABOX

Flat Washer

1/2

62FWABOX

Flat Washer

5/8

SPLIT LOCKWASHERS

BURNDY

aluminum split lockwashers are

manufactured of alloy 7075-T6 and are regular

design.

Catalog

Number

Description

For Bolt

Size

50SWALBOX

Split Washer

1/2

62SWALBOX

Split Washer

5/8

D-4

BURNDY

Canada: 1-800-387-6487

www.burndy.com

US: 1-800-346-4175

Hardware

GALVANIZED

STEEL HARDWARE

Galvanized bolts, nuts, flatwashers, and internal

tooth lockwashers are manufactured per

ASTM307 Grade A. Nut surfaces and bolt heads

have American Standard dimensions, and the

Catalog

Number

Thread

Size

Length

(B)

38X125HGSBBOX

3/8-16

1.25

38X275HGSBBOX

3/8-16

2.75

38X225HGSBBOX

3/8-16

2.25

50X100HGSBBOX

1/2-13

1.00

50X150HGSBBOX

1/2-13

1.50

50X200HGSBBOX

1/2-13

2.00

62X100HGSBBOX

5/8-11

1.00

Catalog

Number

Thread

Size

31CHGSNBOX

5/16-18

38HGSN009BOX

3/8-16

38HGSNBOX

3/8-16

50HGSNBOX

1/2-13

Catalog

Number

For Bolt

Size

Nominal Dimensions (Inches)

I.D.

O.D

38X81FWGSBOX

3/8

0.41

0.81

50X106FWGSBOX

1/2

0.53

1.06

62X131FWGSBOX

5/8

0.66

1.31

threads are per American National Coarse Series,

Class #2 fit. Galvanizing is per ASTM A153.

Catalog

Number

Bolt

Size

38NWGSBOX

3/8

50NWGSBOX

1/2

62NWGSBOX

5/8

75NWGSBOX

3/4

NUTS

BOLTS

FLAT WASHERS

INTERNAL TOOTH

LOCKWASHERS

D-5

Catalog

Number

Thread

Size

Length

(B)

62X175HGSBBOX

5/8-11

1.75

75X125HGSBBOX

3/4-11

1.25

75X200HGSBBOX

3/4-10

2.00

75X500HGSBBOX

3/4-10

5.00

75X600HGSBBOX

3/4-10

6.00

100X200HGSBBOX

1-8

2.00

Catalog

Number

Thread

Size

62HGSNBOX

5/8-11

75HGSNBOX

3/4-10

BURNDY

US: 1-800-346-4175

www.burndy.com

Canada: 1-800-387-6487

Hardware

STAINLESS STEEL

HARDWARE

Stainless steel bolts, nuts, flatwashers and split

lockwashers are manufactured from 18-8 non-

magnetic material. Nut surfaces and bolt heads

have American National Coarse Series, Class #2

fit.

Catalog

Number

Thread

Size

Length

38X125HSSBBOX

3/8-16

1-1/4

38X225HSSBBOX

3/8-16

2-1/4

38X250HSSBBOX

3/8-16

2-1/2

38X275HSSBBOX

3/8-16

2-3/4

50X200HSSBBOX

1/2-13

BOLTS

NUTS

SPLIT LOCKWASHERS

FLAT WASHERS

Catalog

Number

Thread

Size

25HSSNBOX

1/4-20

38HSSNBOX

3/8-16

50HSSNBOX

1/2-13

62HSSNBOX

5/8-11

75HSSNBOX

3/4-10

Catalog

Number

For Bolt

Size

25SWSSLTBOX

1/4

38SWSSMDBOX

3/8

50SWSSMDBOX

1/2

62SWSSMDBOX

5/8

Catalog

Number

For Bolt

Size

Nominal Dimensions (Inches)

I.D.

O.D.

25FWSBOX

1/4

0.27

0.69

38FWSSBOX

3/8

0.41

1.00

50FWSSBOX

1/2

0.59

1.13

62FWSSBOX

5/8

0.66

1.31

D-6

Catalog

Number

Thread

Size

Length

50X250HSSBBOX

1/2-13

2-1/2

50X300HSSBBOX

1/2-13

62X300HSSBBOX

5/8-11

75X300HSSBBOX

3/4-10

BURNDY

US: 1-800-346-4175

www.burndy.com

Canada: 1-800-387-6487

Hardware

TYPE TMH

DURIUM™ SILICON BRONZE

HARDWARE KITS

Type TMH are DURIUM™ silicon bronze

hardware kits. The kits can be ordered for specific

applications ensuring the proper type and amount

of hardware for each installation. Packaged in

separate sealed bags, they are convenient to use,

eliminating mismatched quantities. DURIUM™

silicon bronze material provides long lasting

corrosion resistance Grade 2.

Catalog

Number

Size

Each TMH Kit Includes:

Working

Range (R)

Installation

Torque

(In-lbs)

Bolt

Flat

Washer

Split

Washer

Hex

Nut

Length Qty

TMH262

1/4-20

0.75

0.09 - 0.34

TMH263

1.00

0.34 - 0.59

TMH264

1.25

0.59 - 0.84

TMH265

1.50

0.84 - 1.09

TMH266

3/8-16

0.75

0.00 - 0.19

240

TMH267

1.00

0.19 - 0.44

TMH268

1.25

0.44 - 0.69

TMH269

1.50

0.69 - 0.94

TMH270

1.75

0.94 - 1.19

TMH271

2.00

1.19 - 1.44

TMH332

2.75

TMH261 †

3.00

2.15 - 2.40

TMH289 ††

1.25

0.02 - 0.27

TMH295

1/2-13

1.25

0.27 - 0.49

480

TMH272

1.50

0.49 - 0.74

TMH294

1.75

0.74 - 0.99

TMH69

2.00

0.99 - 1.24

TYPE TMH-SS

STAINLESS STEEL

HARDWARE KITS

Type TMH-SS are stainless steel hardware kits.

Just like the standard TMH kits, these kits can

be ordered for specific applications ensuring the

proper type and amount of hardware for each

installation. They are packaged in separate sealed

bags and convenient for use and ordering.

Catalog

Number

Size

Each TMH Kit Includes:

Working

Range (R)

Installation

Torque

(In-lbs)

Bolt

Flat

Washer

Split

Washer

Hex

Nut

Length Qty

TMH322SS

10-32

0.88

TMH262SS

1/4-20

0.75

0.09 - 0.34

TMH263SS

1.00

0.34 - 0.59

TMH264SS

1.25

0.59 - 0.84

TMH265SS

1.50

0.84 - 1.09

—

TMH267SS

3/8-16

1.00

0.19 - 0.44

240

TMH268SS

1.25

0.44 - 0.69

TMH269SS

1.50

0.69 - 0.94

TMH270SS

1.75

0.94 - 1.19

TMH271SS

2.00

1.19 - 1.44

TMH261SS †

3.00

2.15 - 2.40

TMH295SS

1/2-13

1.25

0.27 - 0.49

480

TMH272SS

1.50

0.49 - 0.74

TMH294SS

1.75

0.74 - 0.99

TMH69SS

2.00

0.99 - 1.24

† For use with CUSA750-2TC38 copper spacer adaptor,

(2) terminals and °” thick equipment bus bar. For other

combinations contact BURNDY

†† For use with all GAR-TC connectors. “R” dimension is

allowable pad thickness of terminal

* For other combinations contact BURNDY

“L” dimension never exceeds 0.25

For use with CUSA442TC38 on 1/4

bus bar and

HYLUG™ 4/0 - 750 kcmil.

1
2

D-8

BURNDY

Canada: 1-800-387-6487

www.burndy.com

US: 1-800-346-4175

Hardware

TYPE UB

DURIUM™

SILICON BRONZE U-BOLTS

DURIUM™ U-BOLTS are specifically designed

for electrical connections to pipe and rod. The

U-BOLTS are threaded on the straight portion of

the legs only allowing for more contact surface on

the pipe or rod. American National Coarse Threads

Class #2 fit. The silicon bronze is per ASTM B99.

Catalog

Number

Thread

Size

UB101

1/4-20

1.38

0.75

0.88

UB104

1/4-20

1.81

1.12

0.88

1.12

UB105

1/4-20

2.03

1.31

1.00

1.25

UB106

1/4-20

2.31

1.62

1.12

1.38

UB107

1/4-20

2.66

1.94

1.31

1.56

UB336

3/8-16

1.50

0.88

0.62

0.88

UB178

3/8-16

2.00

0.88

0.75

1.38

UB354

3/8-16

2.44

1.25

1.00

1.62

UB187

3/8-16

2.47

1.16

1.06

1.69

UB271

3/8-16

2.50

1.00

1.19

1.81

UB222

3/8-16

2.69

1.50

1.12

1.75

UB242

3/8-16

2.72

1.16

1.31

1.94

UB383

3/8-16

2.75

0.94

1.47

2.09

UB269

3/8-16

2.78

1.19

1.38

2.00

UB357

3/8-16

2.78

1.69

1.12

1.75

UB384

3/8-16

2.91

1.44

1.38

2.00

UB249

3/8-16

3.00

1.50

1.44

2.06

UB1031

3/8-16

3.31

1.75

1.90

2.25

UB244

3/8-16

3.31

1.75

1.62

2.25

UB199

3/8-16

3.41

2.34

1.44

2.05

UB204

3/8-16

3.47

2.06

1.62

2.25

UB124

3/8-16

3.50

2.75

1.31

1.94

UB268

3/8-16

3.97

2.34

2.00

2.62

UB257

3/8-16

4.16

2.81

1.94

2.56

UB1032

3/8-16

4.41

2.81

2.56

2.81

UB310

3/8-16

4.41

2.81

2.19

2.81

UB266

3/8-16

4.97

3.31

2.50

3.12

UB267

3/8-16

5.53

3.94

2.75

3.38

UB258

3/8-16

5.56

4.00

2.75

3.38

UB264

3/8-16

6.16

4.44

3.12

3.75

UB1033

3/8-16

6.16

4.44

3.50

3.75

UB261

3/8-16

6.34

4.94

3.06

3.69

UB422

3/8-16

7.69

6.00

3.88

4.50

UB1027

3/8-16

8.12

7.12

2.88

4.38

UB1028

3/8-16

9.62

9.12

2.88

4.88

UB1029

3/8-16

11.20

11.25

2.88

5.38

Catalog

Number

Thread

Size

UB1030

3/8-16

12.70

13.25

2.88

5.88

UB224

1/2-13

2.44

1.12

0.88

1.62

UB358

1/2-13

2.66

1.31

1.00

1.75

UB291

1/2-13

2.81

1.19

1.97

UB293

1/2-13

2.81

1.75

1.69

UB464

1/2-13

3.12

1.81

1.96

UB540

1/2-13

3.19

1.38

2.25

UB254

1/2-13

3.41

1.31

2.50

UB328

1/2-13

3.41

2.94

1.69

UB400

1/2-13

4.03

1.31

3.12

UB230

1/2-13

4.34

2.94

2.62

UB311

1/2-13

4.44

1.88

3.25

UB302

1/2-13

4.62

2.47

3.12

UB232

1/2-13

4.97

3.44

3.00

UB260

1/2-13

5.34

2.94

3.62

UB390

1/2-13

5.38

2.50

3.88

UB263

1/2-13

5.78

4.56

3.25

UB282

1/2-13

6.31

4.12

4.00

UB236

1/2-13

6.41

5.06

3.62

UB399

1/2-13

6.66

1.31

5.75

UB436

1/2-13

6.66

4.56

4.12

UB262

1/2-13

6.78

5.06

4.00

UB392

1/2-13

7.06

1.62

6.00

UB416

1/2-13

7.53

5.06

4.75

UB300

1/2-13

7.62

6.12

4.31

UB306

1/2-13

7.88

6.12

4.56

UB275

1/2-13

8.16

7.19

3.54

4.31

UB437

1/2-13

8.56

6.12

5.25

UB294

5/8-11

3.50

1.38

2.50

UB314

5/8-11

3.66

2.09

2.31

UB425

5/8-11

3.72

2.31

2.25

UB317

5/8-11

4.97

1.81

3.75

UB315

5/8-11

5.56

2.09

4.19

UB318

3/4-10

4.22

2.44

2.62

UB344

3/4-10

4.72

1.94

3.38

UB319

3/4-10

6.34

2.44

4.75

D-9