Technical specification for T-head bolts (ANSI/AWWA C111/A21.11)

Dimensions of T-head (tee-head) bolt and nut

Size
in.
A
±0,05
B
+0,030
-0,074
C
+0,25
-0,05
D*
+3
-0
F H
+0,00
–(as spec.)
J
+0,15
-0,03
R
max.
⅝ x 3 1,50 0,625 3,0 2,00 0,625±0,04 1,062 -0,04 0,625 0,312
¾ x 3½ 1,75 0,750 3,5 2,50 0,750±0,06 1,250 -0,06 0,750 0,375
¾ x 4 1,75 0,750 4,0 3,00 0,750±0,06 1,250 -0,06 0,750 0,375
¾ x 4½ 1,75 0,750 4,5 3,00 0,750±0,06 1,250 -0,06 0,750 0,375
¾ x 5 1,75 0,750 5,0 3,00 0,750±0,06 1,250 -0,06 0,750 0,375
1 x 5½ 2,25 1,000 5,5 3,00 1,000±0,08 1,625 -0,08 1,000 0,500
1 x 6 2,25 1,000 6,0 3,00 1,000±0,08 1,625 -0,08 1,000 0,500
1¼ x 6 2,50 1,250 6,0 3,50 1,250±0,08 2,000 -0,08 1,250 0,625
1¼ x 6½ 2,50 1,250 6,5 3,5 1,250±0,08 2,000 -0,08 1,250 0,625

*) Bolts with dimension C longer than listed above are assumed to use the same thread length requirements as the longest specified.

Chemical Properties

Component: C Mn S Ni Cu Ni+Cu+Cr
Min. 0,25 0,20 1,25
Max. 0,20 1,25 0,05

Mechanical Properties

Minimum yield strenght 45,000 psi
(310 MPa)
Minimum elongation in 2 in. 20 %

Proof Load of bolt and nut

Bolt Size
in.
Load
(kN)
Load
lbf
40,0 9 000
¾ 60,0 13 500
1 111,2 25 000
177,9 40 000

tee bolt connection Tee Bolt Connection

Torque Loads

Pipe size
nom. in.
Bolt Size
in.
Range of Torque
(Nm)
Range of Torque
lbf/ft
Length of Wrench
in.
Length of Wrench*
(mm)
3 61-81 45-60 8 203
4-24 ¾ 102-122 75-90 10 254
30-36 1 136-163 100-120 14 256
42-48 163-203 120-150 16 406

*) Applied with torque-measuring or torque-indicating wrenches.

Whilst the information is provided in good faith, Andrews Fasteners Ltd are not under any responsibility or liability in respect of errors or information that was found to be incorrect or for any reliance the user may place on it.

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