Alloy steel AMERICAN tee-head bolts, studs and nuts are used to secure mechanical joints, mechanical joints with retainer gland, or Mechanical Joint Coupled Joint Pipe. They are supplied in boxes for ease of ordering.
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.
Pipe Size1 | Mechanical Joint | MJ Coupled Joint | |||
|---|---|---|---|---|---|
No. | T-Head Bolt | No. | T-Head Bolt | Stud Size | |
4 | 4 | 3/4 × 3-1/2 | 4 | 3/4 × 4 | 3/4 × 3-1/2 |
6 | 6 | 3/4 × 3-1/2 | 6 | 3/4 × 4 | 3/4 × 3-1/2 |
8 | 6 | 3/4 × 4 | 6 | 3/4 × 4-1/2 | 3/4 × 3-1/2 |
10 | 8 | 3/4 × 4 | 8 | 3/4 × 4-1/2 | 3/4 × 3-1/2 |
12 | 8 | 3/4 × 4 | 8 | 3/4 × 4-1/2 | 3/4 × 3-1/2 |
14 | 10 | 3/4 × 4-1/2 | 10 | 3/4 × 5 | 3/4 × 5 |
16 | 12 | 3/4 × 4-1/2 | 12 | 3/4 × 5 | 3/4 × 5 |
18 | 12 | 3/4 × 4-1/2 | 12 | 3/4 × 5 | 3/4 × 5 |
20 | 14 | 3/4 × 4-1/2 | 14 | 3/4 × 6 | 3/4 × 5 |
24 | 16 | 3/4 × 5 | 16 | 3/4 × 6 | 3/4 × 5 |
30 | 20 | 1 × 6 | 20 | 1 × 7 | 1 × 6 |
36 | 24 | 1 × 6 | 24 | 1 × 7 | 1 × 6 |
42 | 28 | 1-1/4 × 6-1/2 | 28 | 1-1/4 × 7 | 1-1/4 × 7 |
48 | 32 | 1-1/4 × 6-1/2 | 32 | 1-1/4 × 7 | 1-1/4 × 7 |
1.) 14"-48" mechanical joints are furnished on fittings only.
2.) Many retainer gland designs (from vendors) require non-standard length, sometimes longer bolts.
