Crossarm Mounting Brackets

CMB Type (NEMA BRACKETS), Cutout & Arrester Mounts

CATALOG NUMBER Description

Dimensions (inches)

A B C Steel Size
Angle Bkt. Back Strap
CMB-1 NEMA Type A 2-3/4 to 4 4-1/8 to 5-1/4 2-1/4 5/16 x 1-1/2  

1/4 x 1-1/4

CMB-2 NEMA Type B 2-1/4 3/8 x 1-3/4
CMB-3 NEMA Modified 4-15/16 3/8 x 1-3/4
CMB-4 NEMA Modified 5-1/2 3/8 x 2

CMB-A TYPE, Cutout & Arrester Mounts for larger crossarms

CATALOG NUMBER Description

Dimensions (inches)

A B C Steel Size
Angle Bkt. Back Strap
CMB-1A

With extra
7/16″ square
hole at top and
7″ carriage bolts

2-3/4 to 4 4-1/8 to 6 2-1/4 5/16 x 1-1/2  

1/4 x 1-1/4

CMB-2A 2-1/4 3/8 x 1-3/4
CMB-3A 4-15/16 3/8 x 1-3/4
CMB-4A 5-1/2 3/8 x 2

CMB-L TYPE (angle only)

CATALOG NUMBER

Description

Dimensions (inches)

C

Steel Size

CMB-1-L NEMA Type A 2-1/4 5/16 x 1-1/2
CMB-2-L NEMA Type B 2-1/4 3/8 x 1-3/4
CMB-3-L NEMA Modified 4-15/16 3/8 x 1-3/4
CMB-4-L NEMA Modified 5-1/4 3/8 x 2
CMB-1A-L

With extra
7/16″ square
hole at top

2-1/4 5/16 x 1-1/2
CMB-2A-L 2-1/4 3/8 x 1-3/4
CMB-3A-L 4-15/16 3/8 x 1-3/4
CMB-4A-L 5-1/4 3/8 x 2

BACK STRAPS & HARDWARE SETS

CATALOG NUMBER Description
CMB-BS NEMA back strap, 1/4″ x 1-1/4″ steel
CMB-ABS A-type back strap, 1/4″ x 1-1/4″ steel
CMB-HS-6 Hardware set, NEMA strap with 6″ carriage bolts
CMB-AHS-7 Hardware set, A-type with 7″ carriage bolts
Category:

Description

MATERIAL: A36 hot rolled steel. All bolts, nuts and washers are steel.
FINISH: Hot dip galvanized per ASTM A-153.