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Grade 75 All-Thread Rebar Accessories
Threaded
Bar Types		 Grade 75
Information		 Grade 75
Accessories		 Case
Histories		 Corrosion
Protection

We offer a number of component parts and accessories for our Grade 75 All-Thread Rebar. All Hex Nuts and Couplings develop 100% of the bar's ultimate strength.

Hex Nuts Stop-Type Couplings
Hardened Washers Spherical Washers
Jam Nuts Bevel Washers
Steel Plates

R63 Hex Nuts - ASTM A108
Hex Nut
Nominal
Bar
Diameter
 Across
Flats		 Across
Corners
Thickness
Part
Number
#6 - 3/4"
(20 mm)		 1-1/4"
(31.8 mm)		 1.44"
(36.7 mm)		 1-5/8"
(41.4 mm)		 R63-06
#7 - 7/8"
(22 mm)

1-7/16"
(36.5 mm)

1.66"
(42.2 mm)

1-3/4"
(44.5 mm)

R63-07
#8 - 1"
(25 mm)

1-5/8"
(41.3 mm)

1.88"
(47.7 mm)

2"
(50.8 mm)

R63-08
#9 - 1-1/8"
(28 mm)

1-7/8"
(47.8 mm)

2.17"
(55.0 mm)

2"
(55.5 mm)

R63-09
#10 - 1-1/4"
(32 mm)

2"
(50.8 mm)

2.31"
(58.6 mm)

2-3/16"
(55.6 mm)

R63-10
#11 - 1-3/8"
(35 mm)

2-1/4"
(57.2 mm)

2.53"
(64.2 mm)

2-13/32"
(61.1 mm)

R63-11
#14 - 1-3/4"
(45 mm)

2-3/4"
(73.0 mm)

3.18"
(80.6 mm)

3-1/4"
(82.6 mm)

R63-14
#18 - 2-1/4"
(55 mm)

3-1/2"
(88.9 mm)

4.04"
(103 mm)

3-1/2"
(88.9 mm)

R63-18
#20 - 2-1/2"
(64 mm)

4"
(102 mm)

4.62"
(117 mm)

4"
(102 mm)

R63-20
* #28 - 3-1/2"
(89 mm)

5-1/2"
(140 mm)

6"
(142 mm)

6"
(142 mm)

R64-28
* Rounded Collar Nut

R62 Stop-Type Couplings - ASTM A108
Stop Type Coupling
Nominal
Bar
Diameter		 Outside
Diameter		 Overall
Length
Part
Number
#6 - 3/4"
(20 mm)		 1-1/4"
(31.8 mm)		 3-1/2"
(88.9 mm)		 R62-06
#7 - 7/8"
(22 mm)

1-3/8"
(35.1 mm)

4"
(102 mm)

R62-07
#8 - 1"
(25 mm)

1-5/8"
(41.4 mm)

4-1/2"
(114 mm)

R62-08
#9 - 1-1/8"
(28 mm)

1-7/8"
(47.7 mm)

5"
(127 mm)

R62-09
#10 - 1-1/4"
(32 mm)

2"
(50.8 mm)

5-1/2"
(140 mm)

R62-10
#11 - 1-3/8"
(35 mm)

2-1/4"
(57.2 mm)

6"
(152 mm)

R62-11
#14 - 1-3/4"
(45 mm)

2-7/8"
(73.0 mm)

7-7/8"
(200 mm)

R62-14
#18 - 2-1/4"
(55 mm)

3-1/2"
(88.9 mm)

9-1/8"
(233 mm)

R62-18
#20 - 2-1/2"
(64 mm)

4"
(102 mm)

9-1/2"
(241 mm)

R62-20
#28 - 3-1/2"
(89 mm)

5-1/2"
(140 mm)

12"
(305 mm)

R62-28

R9F Hardened Washers - ASTM F436
Hardened Washer
Nominal
Bar
Diameter		 Outside
Diameter		 Inside
Diamter		 Thickness
Part
Number
#6 - 3/4"
(20 mm)		 1-3/4"
(45 mm)		 15/16"
(24 mm)		 5/32"
(3.4 mm)		 R9F-07-436
#7 - 7/8"
(22 mm)

2"
(51 mm)

1-1/8"
(28 mm)

5/32"
(4.0 mm)

R9F-08-436
#8 - 1"
(25 mm)

2-1/4"
(57 mm)

1-1/4"
(32 mm)

5/32"
(4.0 mm)

R9F-09-436
#9 - 1-1/8"
(28 mm)

2-1/4"
(57 mm)

1-1/4"
(32 mm)

5/32"
(4.0 mm)

R9F-09-436
#10 - 1-1/4"
(32 mm)

2-1/2"
(64 mm)

1-3/8"
(35 mm)

5/32"
(4.0 mm)

R9F-10-436
#11 - 1-3/8"
(35 mm)

3"
(76 mm)

1-5/8"
(41 mm)

7/32"
(5.6 mm)

R9F-12-436
#14 - 1-3/4"
(45 mm)

3-3/8"
(86 mm)

1-7/8"
(48 mm)

9/32"
(7.1 mm)

R9F-14-436
#18 - 2-1/4"
(55 mm)

4-1/2"
(114 mm)

2-5/8"
(67 mm)

9/32"
(7.1 mm)

R9F-20-436
#20 - 2-1/2"
(64 mm)

5"
(127 mm)

2-7/8"
(73 mm)

9/32"
(7.1 mm)

R9F-22-436
#28 - 3-1/2"
(89 mm)

7"
(178 mm)

3-7/8"
(98 mm)

5/16"
(7.9 mm)

R9F-30-436

R81 Spherical Washers - ASTM A536
Spherical Washer
Nominal
Bar
Diameter
 Thickness Outside
Dome		 Part
Number
#6 - 3/4"
(20 mm)		 35/64”
(13.9 mm)		 2"
(51 mm)		 R81-0675
#7 - 7/8"
(22 mm)

39/64”
(15.5 mm)

2-1/4"
(57 mm)

 R81-0775
#8 - 1"
(25 mm)

5/8”
(15.9 mm)

2-1/2"
(64 mm)

 R81-0875
#9 - 1-1/8"
(28 mm)

3/4”
(19.1 mm)

2-3/4"
(70 mm)

 R81-0975
#10 - 1-1/4"
(32 mm)

53/64”
(21.0 mm)

3-1/8"
(79.4 mm)

 R81-1075
#11 - 1-3/8"
(35 mm)

29/32”
(23.0 mm)

3-1/8"
(79.4 mm)

 R81-1175
#14 - 1-3/4"
(45 mm)

1-7/64”
(28.2 mm)

4"
(102 mm)

 R81-1475
#18 - 2-1/4"
(55 mm)

1-13/32”
(35.7 mm)

5"
(127 mm)

 R81-1875
#20 - 2-1/2"
(64 mm)

1-1/2”
(38.1 mm)

5-1/4"
(133 mm)

 R81-2075
#28 - 3-1/2"
(89 mm)

1-1/2”
(38.1 mm)

7"
(178 mm)

 R81-2875

R63-JN Jam Nuts - ASTM A108
These Jam Nuts can't be substituted for full strength nuts anc can't be used on bars other than Williams Grade 75 All-Thread Rebars of the same diameter.
Jam Nut
Nominal
Bar
Diameter
 Across
Flats		 Overall
Length		 Part
Number
#6 - 3/4"
(20 mm)		 1-1/4"
(32 mm)		 13/16"
(20.6 mm)		 R63-06JN
#7 - 7/8"
(22 mm)

1-7/16"
(36.5 mm)

7/8"
(22.2 mm)

R63-07JN
#8 - 1"
(25 mm)

1-5/8"
(41 mm)

1"
(25 mm)

R63-08JN
#9 - 1-1/8"
(28 mm)

1-7/8"
(47.6 mm)

1"
(25 mm)

R63-09JN
#10 - 1-1/4"
(32 mm)

2"
(51 mm)

1-3/16"
(27.7 mm)

R63-10JN
#11 - 1-3/8"
(35 mm)

2-1/4"
(57 mm)

1-1/4"
(31.8 mm)

R63-11JN
#14 - 1-3/4"
(45 mm)

2-3/4"
(70 mm)

1-5/8"
(41.3 mm)

R63-14JN
#18 - 2-1/4"
(55 mm)

3-1/2"
(89 mm)

1-3/4"
(44.5 mm)

R63-18JN
#20 - 2-1/2"
(64 mm)

4"
(102 mm)

2"
(50.8 mm)

R63-20JN
* #28 - 3-1/2"
(89 mm)

5-1/2"
(140 mm)

2-1/2"
(63.5 mm)

R64-28JN
** Round nut with outside diameter of 6" (152 mm)
R8M Beveled Washers - ASTM A47 or ASTM A536
Nominal
Bar
Diameter		 Degree
of
Bevel		 Outside
Diameter		 Inside
Diamter		 Maximum
Thickness		 Minimum
Thickness
Part
Number
#6 - 3/4"
(20 mm)		 9° 2" sq.
(50.8 mm)		 1"
(25.4 mm)		 17/32"
(13.5 mm)		 15/64"
(6.1 mm)		 R8M-07
#7 - 7/8"
(22 mm)

9°

2"
(50.8 mm)

1-3/16"
(30.2 mm)

9/16"
(14.3 mm)

1/4"
(6.4 mm)

R8M-09
#8 - 1"
(25 mm)

15°

2-13/16"
(71.4 mm)

1-5/16"
(33.3 mm)

1"
(25 mm)

5/16"
(7.9 mm)

R8M-09S
#9 - 1-1/8"
(28 mm)

15°

2-13/16"
(71.4 mm)

1-5/16"
(33.3 mm)

1"
(25 mm)

5/16"
(7.9 mm)

R8M-09S
#10 - 1-1/4"
(32 mm)

15°

3-3/8"
(85.7 mm)

1-9/16"
(39.7 mm)

1-15/64"
(43.9 mm)

3/8"
(9.7 mm)

R8M-12S
#11 - 1-3/8"
(35 mm)

15°

3-1/2"
(88.9 mm)

1-3/4"
(44.5 mm)

1-1/4"
(31.8 mm)

3/8"
(9.7 mm)

R8M-13S
#14 - 1-3/4"
(45 mm)

5°

3-9/16"
(90.5 mm)

2-1/16"
(52.4 mm)

13/16"
(20.6 mm)

1/2"
(12.7 mm)

R8M-16
#18 - 2-1/4"
(55 mm)

15°

5"
(127 mm)

3"
(76.2 mm)

5/8"
(41.4 mm)

19/64"
(7.6 mm)

R8M-18
#20 - 2-1/2"
(64 mm)

10°

5-1/2"
(140 mm)

3"
(76.2 mm)

1-23/32"
(43.7 mm)

3/4"
(20 mm)

R8M-20
#28 - 3-1/2"
(89 mm)

10°

8"
(203 mm)

4"
(102 mm)

2-19/64"
(58.1 mm)

7/8"
(22 mm)

-
Steel Plates
Round Hole Steel Bearing Plate Keyhole Steel Bearing Plate Dished Hole Steel Bearing Plate Studded Steel Bearing Plate Domed Steel Bearing Plate
S1K - Round S1K - Keyhole R80 - Dished S1K - Studded S1K - Domed
Williams steel bearing plates are standard with a round hole for non-grouted anchors. Also available are dished plates for use with spherical hex nuts and keyhole plates which 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 and bar angle. Stainless steel plates available upon request.
Williams Form Engineering Corp.
Threaded
Bar Types		 Grade 75
Information		 Grade 75
Accessories		 Case
Histories		 Corrosion
Protection
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