AMI / ARC MACHINE CASSETTES / COLLETS
For Tube and Pipe Orbital Welding Applications
We custom engineer aftermarket collets compatible with AMI. Read here to understand why our collets are improvements
All our collets are made from 18-8 stainless steel to give you better wear over aluminum type collets.
Our compliant grips will hold oversize, undersized tubing and prevent maring. The 500 heads now offer gate screws with springs to hold the latch up to make closing the upper gate easier. Our one-piece construction on the lower head will give you better alignment on both sides of your tubing.

Note: All Aftermarket collets are manufactured by Elite Industrial Sales and are not genuine Tri Tool, George Fisher, Orbitalum, AMI, Arc Machine or Swagelok products. Each is a trademark of its own.
9-500 Weld Head
Tube Size
.125" Tube
.25" Tube
.375" Tube
.5" Tube
Accessories and Parts
Replacement Window
Replacement Window Screws
Replacement Thumb Screw (old) 9-500
Replacement Thumb Screw (new) 9-500
Orbital Welding Head Holders
P/N
500-125
500-25
500-375
500-5
500-Window
500-WI
500-Screw
500-Screw-1
500-Holder

9-750 Weld Head
Tube Size
.125" Tube
.25" Tube
.375" Tube
.5" Tube
.625" Tube
.75" Tube
Accessories and Parts
Replacement Window
Replacement Window Screws
Replacement SS Collet Screws
Replacement Thumb Screw 9-750 Head
Orbital Welding Head Holders
P/N
753-125
753-25
753-375
753-5
753-625
753-75
750-Window
750-WI
750-SI
750-Screw
750-Holder
Note: We also carry various metric sizes. Contact us for stock availability.

9-1500 Weld Head
Tube Size
.25" Tube
.375" Tube
.5" Tube
.625" Tube
.75" Tube
1" Tube
1.125" Tube
1.25" Tube
1.375" Tube
1.5" Tube
Pipe Size
.5 Pipe
.75 Pipe
1" Pipe
P/N
1503-25
1503-375
1503-5
1503-625
1503-75
1503-1
1503-1.125
1503-1.25
1503-1.375
1503-1.5
1503-5P
1503-75P
1503-1P

Note: We also carry various metric sizes. Contact us for stock availability.
8-2000 Weld Head
Tube Size
.5" Tube
.625" Tube
.75" Tube
1" Tube
1.25" Tube
1.375" Tube
1.5" Tube
1.625" Tube
2" Tube
Pipe Size
.5" Pipe
.625" Pipe
.375" Pipe
.75" Pipe
1" Pipe
1.5" Pipe
P/N
2003-5
2003-625
2003-75
2003-1
2003-1.25
2003-1.375
2003-1.5
2003-1.625
2003-2
2003-5P
2003-625P
2003-375P
2003-75P
2003-1P
2003-1.5P

9-2500 Weld Head
Tube Size
.75" Tube
1" Tube
1.25" Tube
1.5" Tube
1.65" Tube
2" Tube
2.5" Tube
Pipe Size
.75" Pipe
1" Pipe
1.5" Pipe
2" Pipe
P/N
2503-75
2503-1
2503-1.25
2503-1.5
2503-1.65
2503-2
2503-2.5
2503-375P
2503-1P
2503-1.5P
2503-2P
9-3500 Weld Head
Tube Size
1" Tube
1.5" Tube
2" Tube
2.5" Tube
3" Tube
Pipe Size
1.5" Pipe
2" Pipe
2.5" Pipe
3.5" Tube (3" Pipe)
P/N
3503-1
3503-1.5
3503-2
3503-2.5
3503-3
3503-1.5P
3503-2P
3503-2.5P
3503-3.5P

8-4000 Weld Head
Tube Size
1" Tube
1.5" Tube
2" Tube
2.5" Tube
3" Tube
Pipe Size
3.5" Tube (3" Pipe)
4" Tube (3.5 Pipe)
4.5" Tube (4" Pipe)
2" Pipe
2.5" Pipe
P/N
4003-1
4003-1.5
4003-2
4003-2.5
4003-3
4003-3.5
4003-4
4003-4.5
4003-2P
4003-2.5P
9-4500 Weld Head
Tube Size
1" Tube
1.5" Tube
2" Tube
2.5" Tube
3" Tube
Pipe Size
3.5" Tube (3" Pipe)
4" Tube (3.5 Pipe)
4.5" Tube (4" Pipe)
2" Pipe
2.5" Pipe
P/N
4503-1
4503-1.5
4503-2
4503-2.5
4503-3
4503-3.5
4503-4
4503-4.5
4503-2P
4503-2.5P
9-7500 Weld Head
Tube and Pipe Size
3.5" Tube (3" Pipe)
4" Tube (3.5" Pipe)
4.5" Tube (4" Pipe)
6" Tube
6" Pipe
P/N
7503-3.5
7503-4
7503-4.5
7503-6
7503-6P