Part NumberSize (inches)AB (I.D) (min.)C (min.)STP File

S31SK-.75X.50

3/4 X 1/2 2.625 0.375 1 STP

S31SK-1.5X.75

1 1/2 X 3/4 3.500 0.375 1 STP

S31SK-1.5X1

1 1/2 X 1 3.000 0.375 1 STP

S31SK-1X.50

1 X 1/2 3.000 0.375 1

S31SK-1X.75

1 X 3/4 2.625 0.375 1 STP

S31SK-2.5X1.5

2 1/2 X 1 1/2 3.875 0.375 1

S31SK-2.5X2

2 1/2 X 2 3.000 0.375 1

S31SK-2X1

2 X 1 3.875 0.375 1 STP

S31SK-2X1.5

2 X 1 1/2 3.000 0.375 1 STP

S31SK-3X1.5

3 X 1 1/2 4.750 0.375 1 STP

S31SK-3X2

3 X 2 3.875 0.375 1 STP

S31SK-3X2.5

3 X 2 1/2 3.125 0.375 1 STP

S31SK-4X2

4 X 2 5.750 0.375 1 STP

S31SK-4X2.5

4 X 2 1/2 4.875 0.375 1 STP

S31SK-4X3

4 X 3 4.500 0.375 1.5 STP

S31SK-6X3

6 X 3 8.000 0.375 1.5

S31SK-6X4

6 X 4 6.375 0.375 1.5