Selection Table for “A” Dimension of Fixed Length Bayonet Type Thermocouple

"C" Hole Depth

7/8" Long Adapter

1 1/2" Long Adapter

2 1/2" Long Adapter

1/4" to 1/2"
(6.4 mm to 12.7 mm)

1 3/4"
(44.4 mm)

2 3/8"
(60.3 mm)

3 3/8"
(85.7 mm)

1/2" to 1"
<(12.7 mm to 25.4 mm)

2"
(50.8 mm)

2 5/8"
(66.7 mm)

3 5/8"
(92.1 mm)

1" to 1 1/2"
(25.4 mm to 38.1 mm)

2 1/2"
(63.5 mm)

3 1/8"
(79.4 mm)

4 1/8"
(104.8 mm)

1 1/2" to 2"
(38.1 mm to 50.8mm)

3"
(76.2 mm)

3 5/8"
(92.1 mm)

4 5/8"
(117.4 mm)

2" to 2 1/2"
(50.8 mm to 63.5 mm)

3 1/2"
(88.9 mm)

4 1/8"
(104.8 mm)

5 1/8"
(130.2 mm)

2 1/2" to 3"
(63.5 mm to 76.2 mm)

4"
(101.6 mm)

4 5/8"
(117.5 mm)

5 5/8"
(142.9 mm)

3" to 3 1/2"
(76.2 mm to 88.9 mm)

4 1/2"
(114.3 mm)

5 1/8"
(130.2 mm)

6 1/8"
(155.6 mm)

3 1/2" to 4"
(88.9 mm to 101.6 mm)

5"
(127.0 mm)

5 5/8"
(142.9 mm)

6 5/8"
(168.3 mm)

4" to 4 1/2"
(101.6 mm to 114.3 mm)

5 1/2"
(139.7 mm)

6 1/8"
(155.6 mm)

7 1/8"
(181.0 mm)

4 1/2" to 5"
(114.3 mm to 127.0 mm)

6"
(152.4 mm)

6 5/8"
(168.3 mm)