Grade 75 & Grade 80 All-Thread Rebar
| Bar Designation Nominal Diameter & Pitch |
Minimum Net Area Thru Threads |
Minimum Ultimate Strength |
Grade 75 Minimum Yield Strength |
Grade 80 Minimum Yield Strength |
Nominal Weight |
Approximate Thread Major Diameter |
Part Number |
|---|---|---|---|---|---|---|---|
| #6 – 3/4” – 5 (19 mm) |
0.44 in2 (284 mm2) |
44 kips (196 kN) |
33 kips (147 kN) |
35 kips (156 kN) |
1.5 lbs/ft (2.4 kg/m) |
7/8” (22 mm) |
R61-06 |
| #7 – 7/8” – 5 (22 mm) |
0.60 in2 (387 mm2) |
60 kips (267 kN) |
45 kips (200 kN) |
48 kips (214 kN) |
2.0 lbs/ft (3.0 kg/m) |
1” (25 mm) |
R61-07 |
| #8 – 1” – 3-1/2 (25 mm) |
0.79 in2 (510 mm2) |
79 kips (351 kN) |
59 kips (264 kN) |
63 kips (280 kN) |
2.7 lbs/ft (3.9 kg/m) |
1-1/8” (29 mm) |
R61-08 |
| #9 – 1-1/8” – 3-1/2 (29 mm) |
1.00 in2 (645 mm2) |
100 kips (445 kN) |
75 kips (334 kN) |
80 kips (356 kN) |
3.4 lbs/ft (5.1 kg/m) |
1-1/4” (32 mm) |
R61-09 |
| #10 – 1-1/4” – 3 (32 mm) |
1.27 in2 (819 mm2) |
127 kips (565 kN) |
95 kips (424 kN) |
102 kips (454 kN) |
4.3 lbs/ft (5.5 kg/m) |
1-3/8” (35 mm) |
R61-10 |
| #11 – 1-3/8” – 3 (36 mm) |
1.56 in2 (1006 mm2) |
156 kips (694 kN) |
117 kips (521 kN) |
125 kips (556 kN) |
5.3 lbs/ft (7.9 kg/m) |
1-1/2” (38 mm) |
R61-11 |
| #14 – 1-3/4” – 3 (43 mm) |
2.25 in2 (1452 mm2) |
225 kips (1001 kN) |
169 kips (750 kN) |
180 kips (801 kN) |
7.65 lbs/ft (11.8 kg/m) |
1-7/8” (48 mm) |
R61-14 |
| #18 – 2-1/4” – 3 (57 mm) |
4.00 in2 (2581 mm2) |
400 kips (1780 kN) |
300 kips (1335 kN) |
320 kips (1423 kN) |
13.6 lbs/ft (19.6 kg/m) |
2-7/16” (62 mm) |
R61-18 |
| #20 – 2-1/2” – 2-3/4 (64 mm) |
4.91 in2 (3168 mm2) |
491 kips (2184 kN) |
368 kips (1637 kN) |
393 kips (1748 kN) |
16.7 lbs/ft (24.8 kg/m) |
2-3/4” (70 mm) |
R61-20 |
| #24 – 3” – 2-3/4 (76 mm) * |
6.82 in2 (4400 mm2) |
682 kips (3034 kN) |
512 kips (2277 kN) |
546 kips (2429 kN) |
24.0 lbs/ft (35.8 kg/m) |
3-3/16” (81 mm) |
R61-24 |
| #28 – 3-1/2” – 2-3/4 (89 mm) * |
9.61 in2 (6200 mm2) |
961 kips (4274 kN) |
720 kips (3206 kN) |
769 kips (3421 kN) |
32.7 lbs/ft (48.6 kg/m) |
3-3/4” (95 mm) |
R61-28 |
| #32 – 4” – 2-3/4 (102 mm) * |
12.56 in2 (8103 mm2) |
1256 kips (5587 kN) |
942 kips (4190 kN) |
1004 kips (4466 kN) |
43.0 lbs/ft (64.0 kg/m) |
4-1/4” (108 mm) |
R61-32 |
* The #24 and #28 diameter bars are not covered under ASTM A615.
#32 Bar availability may be limited. Please contact Williams for specific lead times.
Structural Properties
| Minimum Yield |
Ultimate Tensile |
Typical Elongation in 8″ Bar |
|---|---|---|
| 75 KSI (517 MPa) |
100 KSI (689 MPa) |
7% – 9% |
Threads
Williams All-Thread Rebar has a cold rolled, continuous, rounded course thread form. Williams special thread (deformation) pattern projects ultra high relative rib area at 3 times that of conventional rebar. This provides for superior bond performance in concrete. Because of the high thread pitch and the full 360 degree concentric thread form, Williams All-Thread Rebar should only bent under special provisions using larger bend diameters than typical ACI minimums. As an alternative to bending, Williams recommends use of a steel plate or a threaded terminator disc to reduce development length. Threads are available in both right and left hand. Grades up to 100 are available upon request.
Sizes
All-Thread Rebar is available in 12 diameters from #6 through #32. Diameters #6 to #24 are available in continuous lengths up to 50-foot, larger diameters up to 40-foot.
Welding
Welding of All-Thread Rebar should be approached with caution since no specific provisions have been included to enhance its weldability. Refer to ANSI/AWS D1.4 for proper selections and procedures.
Grade 75 & Grade 80 All-Thread Rebar Accessories
All Couplings and Hex/Collar Nuts exceed 100% of the bar’s published ultimate strength and couplings will meet ACI 318 Section 25.5.7.1 for mechanical rebar connections.
R62 Stop-Type Couplings
| Bar Diameter |
Outside Diameter |
Overall Length |
Part Number |
|---|---|---|---|
| #6 – 3/4” (19 mm) |
1-1/4” (32 mm) |
3-1/2” (89 mm) |
R62-06 |
| #7 – 7/8” (22 mm) |
1-3/8” (35 mm) |
4” (102 mm) |
R62-07 |
| #8 – 1” (25 mm) |
1-5/8” (41 mm) |
4-1/2” (114 mm) |
R62-08 |
| #9 – 1-1/8” (29 mm) |
1-7/8” (48 mm) |
5” (127 mm) |
R62-09 |
| #10 – 1-1/4” (32 mm) |
2” (51 mm) |
5-1/2” (140 mm) |
R62-10 |
| #11 – 1-3/8” (36 mm) |
2-1/4” (57 mm) |
6” (152 mm) |
R62-11 |
| #14 – 1-3/4” (43 mm) |
2-7/8” (73 mm) |
6” (152 mm) |
R62-14 |
| #18 – 2-1/4” (57 mm) |
3-1/2” (89 mm) |
7-1/8” (181 mm) |
R62-18 |
| #20 – 2-1/2” (64 mm) |
4” (102 mm) |
8” (203 mm) |
R62-20 |
| #24 – 3” (76 mm) |
5” (127 mm) |
9-3/4” (248 mm) |
R62-24 |
| #28 – 3-1/2” (89 mm) |
5-1/2” (140 mm) |
12” (305 mm) |
R62-28 |
| #32 – 4” (102 mm) |
5-3/4” (146 mm) |
15” (381 mm) |
R62-32 |
Couplings are available as tap thru upon request
R63 Hex/Collar Nuts
Hex Nut Rounded Collar Nut
| Bar Diameter |
Across Flats |
Across Corners |
Thickness | Part Number |
|---|---|---|---|---|
| #6 – 3/4” (19 mm) |
1-1/4” (32 mm) |
1.44” (37 mm) |
1-1/8” (29 mm) |
R63-06 |
| #7 – 7/8” (22 mm) |
1-7/16” (37 mm) |
1.66” (42 mm) |
1-1/4” (32 mm) |
R63-07 |
| #8 – 1” (25 mm) |
1-5/8” (41 mm) |
1.88” (48 mm) |
1-3/8” (35 mm) |
R63-08 |
| #9 – 1-1/8” (29 mm) |
1-7/8” (48 mm) |
2.17” (55 mm) |
1-1/2” (38 mm) |
R63-09 |
| #10 – 1-1/4” (32 mm) |
2” (51 mm) |
2.31” (59 mm) |
2” (51 mm) |
R63-10 |
| #11 – 1-3/8” (36 mm) |
2-1/4” (57 mm) |
2.60” (66 mm) |
2-1/8” (54 mm) |
R63-11 |
| #14 – 1-3/4” (43 mm) |
2-3/4” (70 mm) |
3.18” (81 mm) |
3” (76 mm) |
R63-14 |
| #18 – 2-1/4” (57 mm) |
3-3/4” (95 mm) |
4.04” (103 mm) |
3-3/4” (95 mm) |
R63-18 |
| #20 – 2-1/2” (64 mm) |
4” (102 mm) |
4.62” (117 mm) |
3-3/4” (95 mm) |
R63-20 |
| #24 – 3” (76 mm) * |
4-1/2” (114 mm) |
OD 5” (127 mm) |
4-3/8” (111 mm) |
R64-24 |
| #28 – 3-1/2” (89 mm) * |
5-1/2” (140 mm) |
OD 6” (152 mm) |
5-1/2” (140 mm) |
R64-28 |
| #32 – 4” (89 mm) * |
5-3/42” (146 mm) |
OD 6.25” (159 mm) |
7” (178 mm) |
R64-28 |
*Rounded Collar Nut
R81 Spherical Washers
| Bar Diameter |
Thickness | Outside Dome |
Part Number |
|---|---|---|---|
| #6 – 3/4” (19 mm) |
35/64” (14 mm) |
2” (51 mm) |
R81-0675 |
| #7 – 7/8” (22 mm) |
39/64” (15 mm) |
2-1/4” (57 mm) |
R81-0775 |
| #8 – 1” (25 mm) |
5/8” (16 mm) |
2-1/2” (64 mm) |
R81-0875 |
| #9 – 1-1/8” (29 mm) |
3/4” (19 mm) |
2-3/4” (70 mm) |
R81-0975 |
| #10 – 1-1/4” (32 mm) |
53/64” (21 mm) |
3” (76 mm) |
R81-1075 |
| #11 – 1-3/8” (36 mm) |
29/32” (23 mm) |
3-1/4” (83 mm) |
R81-1175 |
| #14 – 1-3/4” (43 mm) |
1-7/64” (28 mm) |
3-3/4” (95 mm) |
R81-1475 |
| #18 – 2-1/4” (57 mm) |
1-13/32” (36 mm) |
5” (127 mm) |
R81-1875 |
| #20 – 2-1/2” (64 mm) |
1-1/2” (38 mm) |
5-1/4” (133 mm) |
R81-2075 |
| #24 – 3” (76 mm) |
1-7/8” (48 mm) |
6-1/2” (165 mm) |
R81-2475 |
| #28 – 3-1/2” (89 mm) |
1-1/2” (38 mm) |
7” (178 mm) |
R81-2875 |
Provides up to 5 ̊ angle when used with a dished plate.
R63-JN Jam Nuts
These Jam/Collar Nuts can not be substituted for full strength nuts and can not be used on bars other than Williams Grade 75 & 80 All-Thread Rebar of the same diameter.
| Bar Diameter |
Across Flats |
Across Corners |
Thickness | Part Number |
|---|---|---|---|---|
| #6 – 3/4” (19 mm) |
1-1/4” (32 mm) |
1.44” (37 mm) |
9/16” (14 mm) |
R63-06JN |
| #7 – 7/8” (22 mm) |
1-7/16” (37 mm) |
1.66” (42 mm) |
5/8” (16 mm) |
R63-07JN |
| #8 – 1” (25 mm) |
1-5/8” (41 mm) |
1.88” (48 mm) |
11/16” (17 mm) |
R63-08JN |
| #9 – 1-1/8” (29 mm) |
1-7/8” (48 mm) |
2.17” (55 mm) |
3/4” (19 mm) |
R63-09JN |
| #10 – 1-1/4” (32 mm) |
2” (51 mm) |
2.31” (59 mm) |
15/16” (24 mm) |
R63-10JN |
| #11 – 1-3/8” (36 mm) |
2-1/4” (57 mm) |
2.6” (66 mm) |
1” (25 mm) |
R63-11JN |
| #14 – 1-3/4” (43 mm) * |
2-5/8” (67 mm) |
OD 2.88” (73 mm) |
1-3/16” (30 mm) |
R64-14JN |
| #18 – 2-1/4” (57 mm) * |
3-1/4” (83 mm) |
OD 3.5” (89 mm) |
1-11/16” (43 mm) |
R64-18JN |
| #20 – 2-1/2” (64 mm) * |
3-3/4” (95 mm) |
OD 4” (102 mm) |
1-11/16” (43 mm) |
R64-20JN |
| #24 – 3” (76 mm) * |
4-1/2” (114 mm) |
OD 5” (127 mm) |
2” (51 mm) |
R64-24JN |
| #28 – 3-1/2” (89 mm) * |
5” (127 mm) |
OD 5.5” (140 mm) |
2-1/4” (57 mm) |
R64-28JN |
| #32 – 4” (102 mm) * |
5-3/4” (146 mm) |
OD 6.25” (159 mm) |
2-1/2” (64 mm) |
R64-32JN |
*Round Collar Jam Nut – Special Order machined Hex Nut available.
R9F Hardened Washers
| Bar Diameter |
Outside Diameter |
Inside Diameter |
Thickness | Part Number |
|---|---|---|---|---|
| #6 – 3/4” (19 mm) |
1-3/4” (44 mm) |
15/16” (24 mm) |
5/32” (4 mm) |
R9F-07-436 |
| #7 – 7/8” (22 mm) |
2” (51 mm) |
1-1/16” (29 mm) |
5/32” (4 mm) |
R9F-08-436 |
| #8 – 1” (25 mm) |
2-1/4” (57 mm) |
1-3/16” (30 mm) |
5/32” (4 mm) |
R9F-09-436 |
| #9 – 1-1/8” (29 mm) |
2-1/4” (57 mm) |
1-3/16” (30 mm) |
5/32” (4 mm) |
R9F-09-436 |
| #10 – 1-1/4” (32 mm) |
2-1/2” (64 mm) |
1-3/8” (35 mm) |
5/32” (4 mm) |
R9F-10-436 |
| #11 – 1-3/8” (36 mm) |
3” (76 mm) |
1-5/8” (41 mm) |
5/32” (4 mm) |
R9F-12-436 |
| #14 – 1-3/4” (43 mm) |
3-3/8” (86 mm) |
1-7/8” (48 mm) |
7/32” (6 mm) |
R9F-14-436 |
| #18 – 2-1/4” (57 mm) |
4-1/2” (114 mm) |
2-5/8” (67 mm) |
9/32” (7 mm) |
R9F-20-436 |
| #20 – 2-1/2” (64 mm) |
5” (127 mm) |
2-7/8” (73 mm) |
9/32” (7 mm) |
R9F-22-436 |
| #24 – 3” (76 mm) |
6” (142 mm) |
3-3/8” (86 mm) |
9/32” (7 mm) |
R9F-26-436 |
| #28 – 3-1/2” (89 mm) |
7” (178 mm) |
3-7/8” (98 mm) |
9/32” (7 mm) |
R9F-30-436 |
| #32 – 4” (102 mm) |
7-3/4” (197 mm) |
4-3/8” (111 mm) |
5/16” (8 mm) |
R9F-34-436 |
R8M Beveled Washers
| Bar Diameter |
Degree of Bevel |
Outside Diameter |
Inside Diameter |
Maximum Thickness |
Minimum Thickness |
Part Number |
|---|---|---|---|---|---|---|
| #6 – 3/4” (19 mm) |
15° | 2-1/16″ (52 mm) |
1” (25 mm) |
3/4” (19 mm) |
1/4” (6 mm) |
R8M-08S |
| #7 – 7/8” (22 mm) |
15° | 2-1/16″ (52 mm) |
1” (25 mm) |
3/4” (19 mm) |
1/4” (6 mm) |
R8M-08S |
| #8 – 1” (25 mm) |
15° | 2-13/16” (71 mm) |
1-5/16” (33 mm) |
1” (25 mm) |
5/16” (8 mm) |
R8M-09S |
| #9 – 1-1/8” (29 mm) |
15° | 2-13/16” (71 mm) |
1-5/16” (33 mm) |
1” (25 mm) |
5/16” (8 mm) |
R8M-09S |
| #10 – 1-1/4” (32 mm) |
15° | 3-3/8” (86 mm) |
1-9/16” (40 mm) |
1-15/64” (44 mm) |
3/8” (10 mm) |
R8M-12S |
| #11 – 1-3/8” (36 mm) |
15° | 3-1/2” (89 mm) |
1-3/4” (44 mm) |
1-1/4” (32 mm) |
3/8” (10 mm) |
R8M-13S |
| #14 – 1-3/4” (43 mm) |
15° | 4-1/2” (114 mm) |
2-1/8” (54 mm) |
1-5/8” (41 mm) |
15/32” (12 mm) |
R8M-14S |
| #18 – 2-1/4” (57 mm) |
15° | 5” (127 mm) |
3” (76 mm) |
1-5/8” (41 mm) |
19/64” (7.5 mm) |
R8M-18 |
| #20 – 2-1/2” (64 mm) |
10° | 5-1/2” (140 mm) |
3” (76 mm) |
1-23/32” (44 mm) |
3/4” (19 mm) |
R8M-20 |
| #24 – 3” (76 mm) |
10° | 7” (178 mm) |
3-5/8” (92 mm) |
2” (51 mm) |
3/4” (19 mm) |
R8M-24 |
| #28 – 3-1/2” (89 mm) |
10° | 8” (203 mm) |
4-1/4” (108 mm) |
2-19/64” (58 mm) |
7/8” (22 mm) |
R8M-28 |
To achieve full strength of the system, beveled washers must be used in conjunction with a hardened washer.
