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Technical Services
Tel: [phone]
B-134
Metal Framing & Cable Tray — Superstrut
®
Metal Framing System
Beam Clamps
M-777 — Steel Top Beam Clamp
C-777 — Steel Top Beam Clamp &
C-778 — Steel Wide JawTop Beam Clamp
M-775L — Clamp with Lock Nut
M-778 — Steel Wide Jaw Top Clamp
Cat. No.
Rod Size
a (iN.) B (iN.) C (iN.)
deSigN
Load LBS.
Std.
CtN.
M-775L-3/8
3
⁄8
3
⁄4 1
3
⁄4 400 100
M-775L-1/2
1
⁄2
3
⁄4 1
3
⁄4 400 100
M-775L-5/8
5
⁄8
3
⁄4 2 440 50
M-775L-3/4
3
⁄4
3
⁄4 2 500 50
Available in Electro-Galvanized (EG) or Black (B).
M-775L
B
C
A
Rod Size a (iN.) deSigN Load LBS.
3
⁄8 350
1
⁄2 470
5
⁄8 550
3
⁄4 700
7
⁄8 1,000
3
⁄4"
A
1
1
⁄4"
A
C-777, C-788
A
B
C
D
E
Cat. No.
Rod Size
a (iN.)
pipe
Size
diMeNSioNS (iN.)
deSigN
Load LBS.
Std.
CtN.B C d e f
C777 3/8
3
⁄8
1
⁄2–4 1
3
⁄16
3
⁄4 1
7
⁄16 1 900 100
C-777-1/2
1
⁄2 5–8 1
1
⁄2
3
⁄4 1
9
⁄16 1
1
⁄4 2,430 50
C-778-3/8
3
⁄8
1
⁄2–4 1
3
⁄16 1
1
⁄4 1
7
⁄16 1 900 100
C-778-1/2
1
⁄2 5–8 1
1
⁄2 1
1
⁄4 1
9
⁄16 1
1
⁄4 2,430 50
Standard Finish – GoldGalv
®
, Black (B) and Electro-Galvanized (EG).
• Top Beam C-Clamp
• Rod Size:
3
⁄8",
1
⁄2",
5
⁄8" and
3
⁄4"
• Available in Electro-Galvanized
(EG) or Black (B) Malleable Iron
• Provides clamping under roof
installations with bar joist
type construction
• Order by Cat. No. and rod size
M-778
M-777
• Junior Top Beam C-Clamp
• Standard finish is Gold-Galv
®
• Available in Electro-Galvanized
(EG) or Black (B) Malleable Iron
• Provides clamping under
roof installations with bar
joist construction (max. joist
thickness
5
⁄8")
• Order by Cat. No., rod size
Rod Size a (iN.) deSigN Load LBS.
3
⁄8 400
1
⁄2 500
5
⁄8 850
3
⁄4 900