Technical specification for T-head bolt and nut assembly (ANSI/AWWA C111/A21.11)
Andrews Fasteners Limited
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Technical specification for T-head bolts (ANSI/AWWA C111/A21.11) image

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.
5/8 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
11⁄4 x 6 2,50 1,250 6,0 3,50 1,250±0,08 2,000 -0,08 1,250 0,625
11⁄4 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
5/8 40,0 9 000
¾ 60,0 13 500
1 111,2 25 000
11⁄4 177,9 40 000

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 5/8 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 11⁄4 163-203 120-150 16 406

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

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