Mechanical Joint Pipe
Assembly Instructions
Mechanical Joint Pipe Assembly Instructions | Accessories
Tee Head Bolts, Studs, Nuts - Alloy Steel, Bolted Joints | To Top of Page
The AMERICAN Mechanical Joint is the Standardized Mechanical Joint per AWWA C111. Assembly of the Mechanical Joint is pictured and described below.
 1
1. Thoroughly clean socket and plain end of all rust or foreign material; slip the gland over plain end with the lip extension toward plain end, followed by the gasket with thick section facing the gland. Gaskets to be installed during very cold weather should be warmed first. (Gaskets not used immediately should be stored in a cool location, out of direct sunlight.)
 2
2. Lubricate socket, gasket and plain end with soapy water or an approved pipe lubricant meeting requirements of AWWA C111.
 3
3. Insert plain end into socket and push gasket into position, making sure it is evenly seated in socket.
 4
4. Slide gland into position, insert bolts and run nuts up finger-tight.
 5
5. Tighten bolts to draw gland toward the pipe flange evenly, maintaining approximately the same distance between the gland and the face of the flange at all points around the joint. This may be achieved by partially tightening the bottom bolt first; then the top bolt; next, the bolts at either side; and, finally, the remaining bolts. This process should be repeated until all bolts are within the range of torques shown. In larger sizes (30"-48"), as many as 5 or more repetitions may be required.
 6
6. The completed joint.
It is recommended that the torque be applied with torque-measuring wrenches. The approximate torque can be applied by a man trained to give an average pull on a specific length regular ratchet wrench; for 5/8" bolt, length of wrench is 8"; for 3/4" bolt, 10"; for 1" bolt, 14"; and for 1 1/4" bolt, 16". Torque so applied should be checked with torque-measuring wrenches. *Gaskets not used immediately should be stored in a cool location, out of direct sunlight.
ADIP Table No. 2-11
Pipe Size +
in. |
Bolt Diameter
in. |
Range of Torque
ft.-lbs |
| 4-24 |
3/4 |
75-90 |
| 30-36 |
1 |
100-120 |
| 42-48 |
1 1/4 |
120-150 |
Notes:
+ 14"-48" Mechanical Joints are provided on fittings and valves only.
AMERICAN Mechanical Joint Accessories
Mechanical Joint Pipe Assembly Instructions | Accessories
Tee Head Bolts, Studs, Nuts - Alloy Steel, Bolted Joints | To Top of Page
Left to right: Gasket, Gland, and Alloy Steel Tee Head Bolt with Hex Nut
ADIP Table No. 2-8
| Size in. |
Bolts |
Weight in Pounds |
| No. Per Joint |
Size in. |
Bolts Total |
Gland |
Gasket + |
One Set Accessories |
| 4 |
4 |
3/4 x 3 1/2 |
3 |
6 |
0.42 |
10 |
| 6 |
6 |
3/4 x 3 1/2 |
5 |
11 |
0.59 |
17 |
| 8 |
6 |
3/4 x 4 |
5 |
18 |
0.75 |
24 |
| 10 |
8 |
3/4 x 4 |
7 |
20 |
0.92 |
28 |
| 12 |
8 |
3/4 x 4 |
7 |
30 |
1.09 |
39 |
| 14 |
10 |
3/4 x 4 1/2 |
9 |
35 |
1.23 |
46 |
| 16 |
12 |
3/4 x 4 1/2 |
11 |
45 |
1.42 |
58 |
| 18 |
12 |
3/4 x 4 1/2 |
11 |
55 |
1.56 |
68 |
| 20 |
14 |
3/4 x 4 1/2 |
13 |
70 |
1.77 |
85 |
| 24 |
16 |
3/4 x 5 |
15 |
90 |
2.13 |
108 |
| 30* |
20 |
1 x 6 |
41 |
180 |
4.16 |
225 |
| 36* |
24 |
1 x 6 |
49 |
235 |
4.81 |
289 |
| 42* |
28 |
1 1/4 x 6 1/2 |
99 |
300 |
5.77 |
405 |
| 48* |
32 |
1 1/4 x 6 1/2 |
113 |
365 |
6.52 |
485 |
| 54** |
36 |
1 1/4 x 6 1/2 |
127 |
360 |
7.3 |
494 |
Notes:
AMERICAN no longer manufactures 2", 2 1/4" and 3" sizes of pipe; bolts required per joint for 2" and 2 1/4" sizes were 2 5/8" x 2 1/2", and for 3" size were 4 5/8" x 3".
Bolts used with mechanical joint retainer glands may be required by the manufacturers of those devices to be longer than shown above.
When required and when used with bell flanges "tapped for studs", stud bolts in lieu of Tee Head bolts are normally ordered of the same length of the Tee Head bolts they replace (See Tee Head Bolts below).
+Gasket weights shown here are for standard SBR rubber; other available rubber types are shown in Table No. 2-6.
*14"-48" Mechanical Joints are for fittings only.
**54" Mechanical Joints are used only with special mechanical joint sleeves. This size is not in AWWA C110.
AMERICAN Tee Head Bolts, Studs and Nuts
Alloy Steel
Mechanical Joint Pipe Assembly Instructions | Accessories
Tee Head Bolts, Studs, Nuts - Alloy Steel, Bolted Joints | To Top of Page
ADIP Table No. 2-15
| Tee Head Bolts and Stud Bolts |
Dimensions in Inches |
Diameter
in. |
Length
in. |
No. of
Threads
Per Inch |
A |
F |
H |
J |
R Max |
X |
Y* |
| 3/4 |
3 1/2 |
10 |
1.75 |
0.75 |
1.25 |
0.75 |
0.375 |
2.5 |
1 |
| 3/4 |
4 |
10 |
1.75 |
0.75 |
1.25 |
0.75 |
0.375 |
3 |
1 |
| 3/4 |
4 1/2 |
10 |
1.75 |
0.75 |
1.25 |
0.75 |
0.375 |
3 |
1.31 |
| 3/4 |
5 |
10 |
1.75 |
0.75 |
1.25 |
0.75 |
0.375 |
3 |
1.63 |
| 3/4 |
5 1/2 |
10 |
1.75 |
0.75 |
1.25 |
0.75 |
0.375 |
3 |
1.63 |
| 1 |
6 |
8 |
2.25 |
1 |
1.625 |
1 |
0.5 |
3 |
1.75 |
| 1 |
7 |
8 |
2.25 |
1 |
1.625 |
1 |
0.5 |
4 |
2 |
| 1 1/4 |
6 |
7 |
2.5 |
1.25 |
2 |
1.25 |
0.625 |
3 |
2 |
| 1 1/4 |
6 1/2 |
7 |
2.5 |
1.25 |
2 |
1.25 |
0.625 |
3.5 |
2 |
| 1 1/4 |
7 |
7 |
2.5 |
1.25 |
2 |
1.25 |
0.625 |
4 |
2 |
| 1 1/4 |
8 1/4 |
7 |
2.5 |
1.25 |
2 |
1.25 |
0.625 |
4.5 |
2 |
Notes:
*The "Y" Dimension is only applicable for standard mechanical joints.
All threads are Coarse-Thread Series Class 2A, External and Class 2B, Internal, per ANSI B1.1.
Threads are the same for bolts and studs.
For tolerances see AWWA C111.
Stud bolts with one nut are furnished when specified in lieu of Tee Head bolts, with the required Stud Bolt length normally equal to the length of the Tee Head bolt it replaces.
Nuts are furnished in accordance with ASTM A563, Standard Specification for Carbon and Alloy Steel Nuts.
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