Often used in corrosive environments to support pipe passing through walls and floors, these collars are 303 stainless steel and sized specifically for a tight fit around pipe. They can also easily be machined to hang signs. Because they’re two pieces, you don’t need to have access to the ends of your pipe to install them. Tighten the clamping screws to secure.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Clamping Screw

For Pipe

Size ID OD Width

Type Thread

Size Hex Key

Size No.

Included Each

303 Stainless Steel

3/8 0.69" 1 1/2" 1/2" Socket Head Screw 1/4"-28 3/16" 2 4124N11 $46.80

1/2 0.857" 1 3/4" 1/2" Socket Head Screw 1/4"-28 3/16" 2 4124N12 51.41

3/4 1.065" 2" 1/2" Socket Head Screw 1/4"-28 3/16" 2 4124N13 54.79

1 1.33" 2 1/4" 1/2" Socket Head Screw 1/4"-28 3/16" 2 4124N14 55.97

1 1/4 1.67" 2 1/2" 1/2" Socket Head Screw 1/4"-28 3/16" 2 4124N15 64.43

1 1/2 1.915" 3" 1/2" Socket Head Screw 1/4"-28 3/16" 2 4124N16 69.23

Steel Clamping Two-Piece Pipe Collars with Wrench Flats

To avoid gouging and marring your pipe while making adjustments, these collars have flats where you can grab and rotate the pipe with a wrench. They're sized precisely for a tight fit around pipe, so they're often used to support pipe passing through floors and walls. They can also easily be machined to hang signs. Since they’re two pieces, you don’t need to have access to the ends of your pipe to install them. Tighten the clamping screws to secure. They’re black-oxide steel, so they have some corrosion resistance.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Clamping Screw

For Pipe

Size ID OD Width Flat-to-Flat

Height Type Thread

Size Hex Key

Size No.

Included Each

Black-Oxide 1215 Carbon Steel

3/8 0.69" 1 1/2" 1/2" 1.312" Socket Head Screw 1/4"-28 3/16" 2 4127N11 $25.31

1/2 0.857" 1 3/4" 1/2" 1.562" Socket Head Screw 1/4"-28 3/16" 2 4127N12 25.72

3/4 1.065" 2" 1/2" 1.812" Socket Head Screw 1/4"-28 3/16" 2 4127N13 27.08

1 1.33" 2 1/4" 1/2" 2.062" Socket Head Screw 1/4"-28 3/16" 2 4127N14 28.54

1 1/4 1.675" 2 1/2" 1/2" 2.312" Socket Head Screw 1/4"-28 3/16" 2 4127N15 35.03

1 1/2 1.915" 3 1/4" 5/8" 2.812" Socket Head Screw 5/16"-24 1/4" 2 4127N16 36.10

Steel Clamping Two-Piece Pipe Collars