Cut Sheet

Beam Clamps
D-30
Metal Framing, Pipe Hangers and Accessories
Beam Clamps for Hanging Rod
M-777 — Steel Top Beam ClampC-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
ROD
SIZE B C DESIGN STD.
CAT. NO. A (IN.) (IN.) (IN.) LOAD LBS. 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
ROD SIZE A (IN.) DESIGN LOAD LBS.
3
⁄8 400
1
⁄2 500
5
⁄8 850
3
⁄4 900
3
⁄4"
A
1
1
⁄4"
A
C-777, C-788
A
B
C
D
E
ROD DESIGN
SIZE PIPE DIMENSIONS (IN.) LOAD STD.
CAT. NO. A (IN.) SIZE B C D E F LBS. CTN.
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