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Ground Anchor Systems
Concrete Anchor Systems
Post Tensioning Systems
Threaded Bars with Fasteners
Tie Rods & Tie Backs
Micro Piles
Concrete Forming Hardware Systems
Williams products are made in the USA

Post Tensioning System Accessories

Post Tension
Information
Parts &
Accessories
Post Tension
Installation
Installation Equipment Case
Histories
Corrosion
Protection
150 KSI All-Thread-Bar Hex Nuts
Stop-Type Couplings Hardened Washers
Spherical Hex Nuts Jam Nuts
Beveled Washers Steel Bearing Plates
End Caps Local Zone Reinforcing
Pocket Former Plastic Spacer Nut
Galvanized Metal Corrugated Duct Polypropylene & Polyethylene Corrugated Duct
Wil-X Cement Grout Heavy Duty Plastic Grout Tube
Grout Saddle Super Plasticizer
150 KSI All-Thread-Bar
Grade 150 KSI All-Thread-Bar
R71 150 KSI All-Thread-Bar - ASTM A722*
Nominal Bar
Diameter
& Pitch
Minimum
Net Area
Thru Threads
Minimum
Ultimate
Strength
Prestressing Force
Nominal
Weight
Approx.
Thread
Major Dia.
Part
Number
0.80f pu A 0.70f pu A 0.60f pu A
1" - 4
(26 mm)
0.85 in2
(549 mm2)
128 kips
(567 kN)
102 kips
(454 kN)
89.3 kips
(397 kN)
76.5 kips
(340 kN)
3.09 lbs./ft.
(4.6 Kg/M)
1-1/8"
(28.6 mm)
R71-08
1-1/4" - 4
(32 mm)
1.25 in2
(807 mm2)

188 kips
(834 kN)

150 kips
(667 kN)

131 kips
(584 kN)

113 kips
(500 kN)

4.51 lbs./ft.
(6.71 Kg/M)

1-7/16"
(36.5 mm)
R71-10
1-3/8" - 4
(36 mm)
1.58 in2
(1019 mm2)

237 kips
(1054 kN)

190 kips
(843 kN)

166 kips
(738 kN)

142 kips
(633 kN)

5.71 lbs./ft.
(8.50 Kg/M)

1-9/16"
(39.7 mm)
R71-11
1-3/4" - 3-1/2
(46 mm)
2.60 in2
(1664 mm2)

390 kips
(1734 kN)

312 kips
(1388 kN)

273 kips
(1214 kN)

234 kips
(1041 kN)

9.06 lbs./ft.
(13.5 Kg/M)
2"
(50.8 mm)
R71-14
2-1/4"" - 3-1/2
(57 mm) **
4.08 in2
(2632 mm2)

613 kips
(2727 kN)

490 kips
(2181 kN)

429 kips
(1909 kN)

368 kips
(1636 kN)

14.1 lbs./ft.
(20.8 Kg/M)

2-1/2"
(63.5 mm)
R71-18
2-1/2" - 3
(65 mm)
5.19 in2
(3350 mm2)

778 kips
(3457 kN)

622 kips
(2766 kN)

545 kips
(2422 kN)

467 kips
(2074 kN)

18.2 lbs./ft.
(27.1 Kg/M)

2-3/4"
(69.9 mm)
R71-20
3" - 3
(75 mm)
6.85 in2
(4419 mm2)

1027 kips
(4568 kN)

822 kips
(3656 kN)

719 kips
(3198 kN)

616 kips
(2740 kN)

24.1 lbs./ft.
(35.8 Kg/M)

3-1/8"
(79.4 mm)
R71-24
** The 2-1/4” diameter bar is not covered under ASTM A722.

More detailed information on Williams 150 KSI All-Thread-Bar

R73 Hex Nuts - ASTM A29 or A576

Hex Nut
Nominal
Bar
Diameter
Across
Flats
Across
Corners
Thickness
Part
Number
1"
(26 mm)
1-3/4"
(44.5 mm)
2.02"
(51.3 mm)
2"
(50.8 mm)
R73-08
1-1/4"
(32 mm)
2-1/4"
(57.2 mm)

2.60"
(66.0 mm)

2-1/2"
(63.5 mm)
R73-10
1-3/8"
(36 mm)
2-1/2"
(63.5 mm)

2.89"
(73.4 mm)

2-3/4"
(69.9 mm)
R73-11
1-3/4"
(46 mm)
3"
(76.2 mm)

3.46"
(87.9 mm)

3-1/2"
(88.9 mm)
R73-14
2-1/4"
(57 mm)
3-1/2"
(88.9 mm)

4"
(102 mm)

4-1/4"
(108 mm)
R73-18
2-1/2"
(65 mm)
4-1/4"
(108 mm)

4.9"
(124 mm)

4-3/4"
(121 mm)
R73-20
3" *
(75 mm)
4-1/4"
(108 mm)
5"
(127 mm)
6-1/8"
(156 mm)
R74-24
*Rounded collar nut with outside diameter of 5" (127 mm)

R72 Stop-Type Couplings - ASTM A29, Grade C1045
Stop Type Coupling
Nominal
Bar
Diameter
Outside
Diameter
Overall
Length
Part
Number
1"
(26 mm)
1-3/4"
(44.5 mm)
4-1/4"
(108 mm)
R72-08
1-1/4"
(32 mm)
2-1/8"
(54.0 mm)
5-1/4"
(133 mm)
R72-10
1-3/8"
(36 mm)
2-3/8"
(60.3 mm)
5-3/4"
(146 mm)
R72-11
1-3/4"
(46 mm)
3"
(76.2 mm)
8-1/2"
(216 mm)
R72-14
2-1/4"
(57 mm)
3-1/2"
(88.9 mm)
9"
(229 mm)
R72-18
2-1/2"
(65 mm)
4-1/4"
(108 mm)
9-3/8"
(238 mm)
R72-20
3"
(75 mm)
5"
(127 mm)
11-7/8"
(302 mm)
R72-24

R9F Hardened Washers - ASTM F436
Hardened Washer
Nominal
Bar
Diameter
Outside
Diameter
Inside
Diamter
Thickness
Part
Number
1"
(26 mm)
2-1/4"
(57.2 mm)
1-1/4"
(31.8 mm)
5/32"
(3.97 mm)
R9F-09-436
1-1/4"
(32 mm)

2-3/4'
(69.9 mm)

1-1/2"
(38.1 mm)
5/32"
(
3.97 mm)
R9F-11-436
1-3/8"
(36 mm)
3"
(76.2 mm)
1-5/8"
(41.3 mm)
5/32"
(3.97 mm)
R9F-12-436
1-3/4"
(46 mm)
3-3/4"
(95.3 mm)
2-1/8"
(54.0 mm)
7/32"
(5.56 mm)
R9F-16-436
2-1/4"
(57 mm)

4-1/2"
(114 mm)

2-5/8"
(66.7 mm)

9/32"
(7.14 mm)

R9F-20-436
2-1/2"
(65 mm)

5"
(127 mm)

2-7/8"
(73.0 mm)

9/32"
(7.14 mm)

R9F-22-436
3"
(75 mm)

6"
(152 mm)

3-3/8"
(85.7 mm)

9/32"
(7.14 mm)

R9F-26-436

R88 Spherical Hex Nuts - ASTM A536
Spherical Hex Nut
Nominal
Bar
Diameter
Across
Flats
Thickness Outside
Dome
Part
Number
1"
(26 mm)
1-3/4"
(44.5 mm)
2-1/4"
(57.2 mm)
2-1/2"
(63.5 mm)
R88-08
1-1/4"
(32 mm)
2-1/4"
(57.2 mm)
2-3/4"
(69.9 mm)
3-1/8"
(79.5 mm)
R88-10
1-3/8"
(36 mm)
2-1/2"
(63.5 mm)
3-1/4"
(82.6 mm)
3-5/8"
(90.2 mm)
R88-11
1-3/4"
(46 mm)
3"
(76.2 mm)
3-1/2"
(88.9 mm)
4"
(102 mm)
R88-14
2-1/4" *
(57 mm)
3-1/2"
(88.9 mm)
5-3/4"
(146 mm)
5-1/2"
(140 mm)
R73-18
R81-18
2-1/2" *
(65 mm)
4-1/4"
(108 mm)
6-1/2"
(165 mm)
6"
(152 mm)
R73-20
R81-20
3" **
(75 mm)
4-1/4"
(108 mm)
8-1/8"
(206 mm)
7"
(178 mm)
R74-24
R81-24
*Requires a standard nut with spherical washer.
**Requires
rounded collar nut with spherical washer assembly.

R73-JN Jam Nuts - ASTM A29, C1045
These Jam Nuts can't be substituted for full strength nuts anc can't be used on bars other than Williams 150 KSI All-Thread-Bars of the same diameter.
Jam Nut
Nominal
Bar
Diameter
Across
Flats
Overall
Length
Part
Number
1"
(26 mm)
1-3/4"
(44.5 mm)
1/2"
(12.7 mm)
R73-08JN
1-1/4"
(32 mm)
2-1/4"
(57.2 mm)
5/8"
(15.9 mm)
R73-10JN
1-3/8"
(36 mm)
2-1/2"
(63.5 mm)
11/16"
(17.5 mm)
R73-11JN
1-3/4"
(46 mm)
3"
(76.2 mm)
7/8"
(22.2 mm)
R73-14JN
2-1/4"
(57 mm)
3-1/4"
(82.6 mm)
1"
(25.4 mm)
R73-18JN
2-1/2"
(65 mm)
4"
(102 mm)
1-3/16"
(30.2 mm)
R73-20JN
3" *
(75 mm)
4-1/2"
(114 mm)
2"
(50.8 mm)
R74-24JN
*Rounded collar nut
R8M Beveled Washers - ASTM A47 or ASTM A536
Nominal
Bar
Diameter
Degree
of Bevel
Outside
Diameter
Inside
Diamter
Maximum
Thickness
Minimum
Thickness
Part
Number
1"
(26 mm)
10° 2-27/32"
(72.2mm)
1-7/16"
(36.5 mm)
7/8"
(22.2 mm)
3/8"
(9.52 mm)
R8M-08-150
1-1/4"
(32 mm)
15° 5-1/4"
(133 mm)
1-21/32"
(42.1 mm)
1-41/64"
(41.7 mm)
19/64"
(7.54 mm)
R8M-10-150
1-3/8"
(36 mm)
15° 5-1/4"
(133 mm)
1-25/32"
(45.2 mm)
1-41/64"
(41.7 mm)
19/64"
(7.54 mm)
R8M-11-150
1-3/4"
(46 mm)
10° 5-1/2"
(140 mm)

2-1/2"
(63.5 mm)

1-23/32"
(43.7 mm)
3/4"
(19.0 mm)
R8M-14-150
2-1/4"
(57 mm)
10° 6-1/2"
(165 mm)

3"
(76.2 mm)

1-7/8"
(47.6 mm)
3/4"
(19.0 mm)
R8M-18-150
2-1/2"
(65 mm)
10°

7-1/2"
(190 mm)

3-1/2"
(88.9 mm)

2.31"
(58.7 mm)

1"
(25.4 mm)

R8M-20-150

3" *
(75 mm)
10°

8"
(203 mm)

3-5/8"
(92.1 mm)

2.43"
(61.7 mm)

1"
(25.4 mm)

R8M-24-150

* Additional USS Hardened Washer Required
Steel Bearing Plates - ASTM A367 or A572
Round Hole Steel Bearing Plate
S1K - Round S3K - Plate w/ Welded Trumpet R80 - Dished
Williams steel bearing plates, available in Grades 36 or 50, are standard with a round hole or dished plates for use with spherical hex nuts. They can be drilled to provide free access for grout tube entry. Bearing plates are customized for each application. Plate dimensions should be specified around the paramete­rs of the project. In addition, corrosion protection should be considered along with specifying hole diameter, bar angle and duct size.
End Caps

Williams offers end caps produced from fiber reinforced nylon or steel to provide corrosion protection at otherwise exposed anchor ends. Most often the caps are packed with corrosion inhibiting wax or grease. The fiber reinforced nylon end cap meets the Florida DOT standards for New Directions of Post Tensioned Bridges.

Fiber Reinforced Nylon End Cap Steel Tube End Cap with Jam Nut Steel Tube End Cap welded on flange with threaded screw connections
Fiber Reinforced Nylon Cap Steel Tube
with Jam Nut
Steel Tube Welded on Flange with Threaded Screw Connections
R85 Pocket Former
Pocket Former
Nominal Bar
Diameter Range
Minimum
Diameter
Maximum
Diameter
Length Part
Number
1" to 1-3/8"
(26 to 36 mm)
5-5/16"
(135 mm)
6-1/4"
(159 mm)
8-1/2"
(216 mm)
R85-K
1-3/4"
(46 mm)
7"
(178 mm)
8-1/4"
(210 mm)
10-1/2"
(267 mm)
R85-2K
R86 Plastic Spacer Nut for Pocket Former
Plastic Spacer Nut
Bar
Diameter
Part
Number
1"
(26 mm)
R8606
1-1/4"
(32 mm)
R8610
1-3/8"
(36 mm)
R8611
1-3/4"
(46 mm)
R73-14JN
Local Zone Reinforcing
Spiral Rebar The compressive strength of the concrete in the local zone (area directly under the bearing plate) can be enhanced when necessary by use of lateral confinement of spiral reinforcement. The rebar spirals are available in #3 through #5 diameters of Grade 60 Rebar and made to the project design requirements for diameter, pitch, and length. They are also available with or without a deformation pattern.
R82 Galvanized Metal Corrugated Duct - ASTM A653
Galvanized Metal Corrugated Duct Williams Galvanized Spiral Metal Duct meets all physical and structural recommendations for post tensioning duct as indicated by the Post Tensioning Institute. The Duct is available in 2”, 3”, and 4” diameter with couplings and reducer couplings for all sizes.

Polypropylene Corrugated Duct - ASTM D4104
Polyethylene Corrugated Duct
- ASTM F405

Polypropylene Corrugated Duct The stable characteristics of Williams polypropylene & polyethylene duct are normally preferred where additional corrosion protection is desirable. Polypropylene Duct has been approved by the Florida DOT for internal tendons and is available in 2-3/8” internal diameter. Polyethylene Duct is available in 2”, 3”, and 4” diameters. Couplings are available for all sizes.
S5Z Wil-X Cement Grout
Conforms to ASTM C 845-76 Type K
Wil-X is chemically compensated for shrinkage. It has a high bond value and is crack resistant for permanent installations. Because it is a cement-grout, it is non-explosive and has a long shelf life when kept dry.
Wil-X may be used to build up leveling pads by simply mixing with sand or pea gravel. This mixture should not be run through the grout pump.
Setting Time: Gilmore Needles (ASTM C266). Initial set 45 minutes; final set 10 hours.
Comparative compressive strength test in PSI (modified ASTM C109) Actual strengths as mixed according to Williams Instructions range from 6,000 to 9,500 PSI depending on water content. Copy of ASTM Modification available upon request.
Note: Results based on a controlled laboratory environment. Jobsite results may vary based on temperature and w/c ratio.
Wil-X Cement Grout - Bag
Compressive Strength
(73° F Dry Environment)
0.44 w/c Ratio
Time PSI MPa
1 Day 2,800 19.3
3 Days 6,400 44.1
7 Days 7,700 53.1
28 Days 9,500 65.5
Wil-X Cement Grout - Bucket 5 gallon
resealable,
moisture proof,
polyporpylene
pails
94 lbs. bag
T3P Heavy Duty Plastic Grout Tube
Furnished in product lengths
for the anchors or in rolls.
Heavy Duty Plastic Grout Tube
O.D. I.D. Part No.
3/8"
(9.5 mm)
1/4"
(6.4 mm)
T3P03002
1/2"
(12.7 mm)
3/8"
(9.5 mm)
T3P04003
5/8"
(15.9 mm)
1/2"
(12.7 mm)
T3P05004
3/4"
(19.1 mm)
5/8"
(15.9 mm)
T3906005
1" Nom.
(25.4 mm)
3/4" Nom
(19.1 mm)
T3P06
R87 Grout Saddle
For quick attachment and release of tendons to grout hose Groute Saddle

Super Plasticizer

Plasticizer is available and is used as a water reducer for ease of pumping grout through tubes at lower water to cement ratios.
Williams Form Engineering Corp.
Post Tension
Information
Parts &
Accessories
Post Tension
Installation
Installation Equipment Case
Histories
Corrosion
Protection
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