Appleton Clamps and Clamp Backs Data Sheet
1.34
Applications
• Used to secure long runs of rigid
metal conduit and IMC.
Features
• Malleable iron clamps and clamp
backs are exceptionally rugged and
strong.
• Steel clamps offer economy and
have integrally formed fillets for excellent strength.
Standard Material
• Malleable iron or steel.
Standard Finish
• Malleable iron clamps and clamp
backs—zinc electroplate, dichromate
and aluminum polymer enamel.
• Steel one-hole clamps—zinc elec-
troplate.
Size Range
• Malleable iron clamps and clamp
backs—1/2" thru 6".
• Steel one-hole clamps—1/4" thru 4".
Compliances
• UL listing not applicable.
• CSA Standard C22.2 No. 18-M1987
applies to malleable iron clamps and
clamp backs thru 4".
NOTE: 2-1/2" thru 4" sizes also suit-
able for EMT
Clamps and Clamp Backs for
Rigid Metal Conduit and IMC
Malleable Iron One-Hole Clamps and Clamp Backs
and Steel One-Hole Clamps.
Catalog
Number
Size
One-Hole Clamps—Malleable Iron
CL-50M
CL-75M
CL-100M
CL-125M
CL-150M
CL-200M
CL-250M
CL-300M
CL-350M
CL-400M
CL-500M
CL-600M
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5
6
15/16
1-1/16
1-3/16
1-19/32
1-25/32
2-9/16
3
3-5/16
3-5/8
4-1/2
5-1/8
5-11/16
Clamp Backs—Malleable Iron
CLB-50M
CLB-75M
CLB-100M
CLB-125M
CLB-150M
CLB-200M
CLB-250M
CLB-300M
CLB-350M
CLB-400M
CLB-500M
CLB-600M
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5
6
2-1/4
2-15/32
2-29/32
3-5/8
4-1/32
5
5-3/4
7-9/32
8-1/8
8-15/16
10
10-15/16
One-Hole Clamps—Steel
CL-25
CL-38
CL-50
CL-75
CL-100
CL-125
CL-150
CL-200
CL-250
CL-300
CL-350
CL-400
1/4
3/8
1/2
3/4
1
1-1/4
1-1/2
2
2-1/2
3
3-1/2
4
5/8
13/16
1
1-5/32
1-11/32
1-11/16
1-15/16
2-11/32
2-13/16
3-5/16
3-7/16
3-25/32
Dimensions
B
15/16
1-1/8
1-15/32
1-7/8
2-3/32
2-23/32
3-9/32
3-29/32
4-3/8
5-3/32
6-9/32
7-3/8
31/32
1-1/8
1-5/16
1-19/32
1-19/32
2-1/16
2-7/16
2-13/16
3-1/4
3-7/16
3-7/8
4-1/4
15/32
5/8
3/4
3/4
7/8
1
1-1/8
1-3/16
1-1/4
1-1/4
1-1/2
1-1/2
3/16
3/16
7/32
1/4
5/16
7/16
9/16
21/32
3/4
3/4
7/8
1
7/16
1/2
1/2
9/16
9/16
5/8
3/4
3/4
15/16
1
1-7/32
1-11/32
19/32
11/16
15/16
1-1/8
1-7/16
1-25/32
2
2-17/32
3-1/32
3-21/32
4-5/32
4-21/32
Hole
Dia.
9/32
9/32
9/32
11/32
11/32
7/16
9/16
9/16
11/16
11/16
11/16
11/16
—
—
—
—
—
—
—
—
—
—
—
—
1/4
9/32
9/32
9/32
11/32
13/32
13/32
15/32
9/16
9/16
11/16
11/16
Refer to Cat. Sect. CH, pages 4 and 5
for price, weight, and standard package
PAGE 34, Effective Jan. 1988
Appleton
• I ELECTRIC COMPANY
1701 West Wellington Avenue
Chicago, Illinois 60657
Copyright 1988 Printed in U.S.A.
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