18 Gaugeable Tube Fittings and Adapter Fittings Straight Fittings Male Connectors
F flat O-ring E D A
O-Seal (SAE/MS Straight Thread) Basic
Tube OD
1/16 1/8
3/16 1/4
5/16 3/8 1/2
SAE/MS Thread Size
Ordering Number
5/16-24 -100-1-OR 5/16-24 -200-1-OR 3/8-24 -300-1-OR 7/16-20 -400-1-OR 1/2-20 -500-1-OR 9/16-18 -600-1-OR 3/4-16 -810-1-OR
A
3/4 1 1/16-12 -1210-1-OR 1
1 5/16-12 -1610-1-OR
Dimensions, in. 1.05 1.29 1.35 1.51 1.60 1.67 1.81 2.06 2.29
D O-Seal (NPT)
Dimensions E➀
D
0.34 0.50 0.54 0.60 0.64 0.66 0.90 0.96 1.23
0.05 0.09 0.12 0.19 0.25 0.28 0.41 0.62 0.88
Basic F
9/16 9/16 5/8 3/4 7/8
15/16 1 1/8 1 1/2 1 3/4
➀ The E dimension is the minimum nominal opening. These fittings may have a larger opening at the pipe/straight thread end.
Tube OD
1/8 1/4
3/8 1/2
NPT Size
1/8
1/8 1/4
1/4 3/8 1/2
1/2
Ordering Number
-400-1-2-OR -400-1-4-OR
-600-1-4-OR -600-1-6-OR -600-1-8-OR
A Dimensions, in. -200-1-2-OR 1.29
1.38 1.51
1.57 1.63 1.85
-810-1-8-OR 1.96
0.50 0.60
0.66 0.90
0.09 0.19
0.28 0.41
3/4 3/4
15/16
15/16 1 1/8
1 5/16 1 5/16
➀ The E dimension is the minimum nominal opening. These fittings may have a larger opening at the pipe/straight thread end.
Dimensions D
E➀ F A F flat O-ring E
Mounting Dimensions for O-Seal Fittings
For a raised surface, see Fig. 1. The minimum diameter allows metal-to-metal contact outside of the O-ring sealing diameter to prevent O-ring extrusion. For a recessed hole that allows the round shoulder of the O-seal fitting into the recess, see Fig. 2. For a recessed hole that allows the hex of the O-seal fitting into the recess, see Fig. 3.
Fig. 1 Fig. 2 D
SAE/MS Thread Size
A
NPT Size
Min Dia
5/16-24 — 0.50 5/16-24
— ➀ A
Fig. 3 1/8 in.
E ➀ C B ➀ ➀ Allow clearance for full thread.
— —
1/8
1/8 1/4
1/4 3/8 1/2
1/2 0.69
3/8-24 — 0.56 7/16-20 — 0.69 0.87
1/2-20 — 0.75 9/16-18 — 0.81 — — —
0.87 1.00 1.22
3/4-16 — 1.00 —
1.22
1 1/16-12 — 1.41 1 5/16-12 — 1.69
B
Min Dia
Dimensions, in. 0.59 0.78
0.66 0.78 0.97
0.91 0.97 1.16
1.34 1.16 1.34 1.53 1.78
C
Min Dia
0.66 0.88
0.75 0.88 1.09
1.03 1.09 1.31
1.53 1.31 1.53 1.75 2.03
D
Max Depth
0.09 0.16
0.09 E
Max Depth
0.16 0.22 0.28 0.22
0.28 0.16 0.31
0.22 0.16
0.22
0.34 0.44 0.34 0.44 0.50 0.56
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