Grade B7 High Impact Bar
ASTM A193
Williams ground anchors can be specified using our high impact Grade B7 material. This product may be desirable in extremely cold temperatures or where rock fall may impact the anchor head. The following diameters are available
| Bar Diameter & Pitch |
Minimum Net Area Thru Threads |
Minimum Ultimate Strength |
Minimum Yield Strength |
Nominal Weight |
Approx. Thread Major Dia. |
Part Number |
|---|---|---|---|---|---|---|
| 3/8” – 16 UNC (9.5 mm) |
0.08 in2 (50.2 mm2) |
9.69 kips (43 kN) |
8.14 kips (36.2 kN) |
0.3 lbs/ft (0.4 kg/m) |
3/8” (9.5 mm) |
B8V-03 |
| 1/2” – 13 UNC (12 mm) |
0.14 in2 (91.6 mm2) |
18 kips (79 kN) |
15 kips (66 kN) |
0.5 lbs/ft (0.8 kg/m) |
1/2” (13 mm) |
B8V-04 |
| 5/8” – 11 UNC (16 mm) |
0.23 in2 (146 mm2) |
28 kips (126 kN) |
24 kips (106 kN) |
0.8 lbs/ft (1.3 kg/m) |
5/8” (16 mm) |
B8V-05 |
| 3/4” – 10 UNC (20 mm) |
0.33 in2 (215 mm2) |
42 kips (186 kN) |
35 kips (156 kN) |
1.2 lbs/ft (1.8 kg/m) |
3/4” (19 mm) |
B8V-06 |
| 7/8” – 9 UNC (22 mm) |
0.46 in2 (298 mm2) |
58 kips (257 kN) |
49 kips (216 kN) |
1.7 lbs/ft (2.5 kg/m) |
7/8” (22 mm) |
B8V-07 |
| 1” – 8 UNC (25 mm) |
0.61 in2 (391 mm2) |
76 kips (337 kN) |
64 kips (283 kN) |
2.1 lbs/ft (3.2 kg/m) |
1” (25 mm) |
B8V-08 |
| 1-1/8” – 7 UNC (29 mm) |
0.76 in2 (492 mm2) |
95 kips (424 kN) |
80 kips (356 kN) |
2.7 lbs/ft (4.0 kg/m) |
1-1/8” (29 mm) |
B8V-09 |
| 1-1/4” – 7 UNC (32 mm) |
0.97 in2 (625 mm2) |
121 kips (539 kN) |
102 kips (453 kN) |
3.4 lbs/ft (5.1 kg/m) |
1-1/4” (32 mm) |
B8V-10 |
| 1-3/8” – 8 UN (35 mm) |
1.23 in2 (794 mm2) |
154 kips (684 kN) |
129 kips (575 kN) |
4.2 lbs/ft (6.2 kg/m) |
1-3/8” (35 mm) |
B8V-11 |
| 1-1/2” – 6 UNC (38 mm) |
1.41 in2 (909 mm2) |
176 kips (784 kN) |
148 kips (658 kN) |
5.1 lbs/ft (7.5 kg/m) |
1-1/2” (38 mm) |
B8V-12 |
| 1-3/4” – 5 UNC (45 mm) |
1.90 in2 (1226 mm2) |
238 kips (1056 kN) |
200 kips (887 kN) |
6.5 lbs/ft (9.6 kg/m) |
1-3/4” (45 mm) |
B8V-14 |
| 2” – 6 UN (51 mm) |
2.65 in2 (1710 mm2) |
331 kips (1473 kN) |
278 kips (1237 kN) |
9.0 lbs/ft (13 kg/m) |
2” (51 mm) |
B8V-16 |
Structural Properties
| Yield Stress |
Ultimate Stress |
Elongation in 20 bar diameters |
Reduction of Area |
Charpy at -20º F (-29º C) |
|---|---|---|---|---|
| 105 KSI (723 MPa) |
125 KSI (861 MPa) |
16% | 50% | 20 ft/lbs (27 Joules) |
C2V Stop-Type Couplings
| Bar Diameter |
Outside Diameter |
Overall Length |
Part Number |
|---|---|---|---|
| 3/8” (9.5 mm) |
3/4” (19 mm) |
1-1/2” (38 mm) |
C2V-03 |
| 1/2” (13 mm) |
3/4” (19 mm) |
1-1/2” (38 mm) |
C2V-04 |
| 5/8” (16 mm) |
1” (25 mm) |
1-3/4” (45 mm) |
C2V-05 |
| 3/4” (19 mm) |
1-1/8” (29 mm) |
2” (51 mm) |
C2V-06 |
| 7/8” (22 mm) |
1-1/4” (32 mm) |
2-1/4” (57 mm) |
C2V-07 |
| 1” (25 mm) |
1-1/2” (38 mm) |
3” (76 mm) |
C2V-08 |
| 1-1/8” (29 mm) |
1-5/8” (41 mm) |
3-1/2” (89 mm) |
C2V-09 |
| 1-1/4” (32 mm) |
1-7/8” (48 mm) |
3-3/4” (95 mm) |
C2V-10 |
| 1-3/8” (35 mm) |
2-1/8” (54 mm) |
4” (102 mm) |
C2V-11 |
| 1-1/2” (38 mm) |
2-1/4” (57 mm) |
5” (127 mm) |
C2V-12 |
| 1-3/4” (45 mm) |
2-1/2” (64 mm) |
5-1/2” (140 mm) |
C2V-14 |
| 2” (51 mm) |
3” (76 mm) |
6” (152 mm) |
C2V-16 |
H1F Heavy Duty Hex Nuts
| Bar Diameter |
Across Flats |
Across Corners |
Thickness | Part Number |
|---|---|---|---|---|
| 3/8” (9.5 mm) |
11/16” (18 mm) |
0.8” (20 mm) |
23/64” (9 mm) |
H1F-03 |
| 1/2” (13 mm) |
7/8” (22 mm) |
1.0” (26 mm) |
31/64” (12 mm) |
H1F-04 |
| 5/8” (16 mm) |
1-1/16” (27 mm) |
1.2” (31 mm) |
39/64” (16 mm) |
H1F-05 |
| 3/4” (19 mm) |
1-1/4” (32 mm) |
1.4” (37 mm) |
47/64” (19 mm) |
H1F-06 |
| 7/8” (22 mm) |
1-7/16” (37 mm) |
1.7” (42 mm) |
55/64” (22 mm) |
H1F-07 |
| 1” (25 mm) |
1-5/8” (41 mm) |
1.9” (48 mm) |
63/64” (25 mm) |
H1F-08 |
| 1-1/8” (29 mm) |
1-13/16” (46 mm) |
2.1” (53 mm) |
1-7/64” (28 mm) |
H1F-09 |
| 1-1/4” (32 mm) |
2” (51 mm) |
2.3” (59 mm) |
1-7/32” (31 mm) |
H1F-10 |
| 1-3/8” (36 mm) |
2-3/16” (56 mm) |
2.5” (64 mm) |
1-11/32” (34 mm) |
H1F-11 |
| 1-1/2” (38 mm) |
2-3/8” (60 mm) |
2.7” (70 mm) |
1-15/32” (37 mm) |
H1F-12 |
| 1-3/4” (43 mm) |
2-3/4” (70 mm) |
3.18” (81 mm) |
1-23/32” (44 mm) |
H1F-14 |
| 2” (51 mm) |
3-1/8” (79 mm) |
3.6” (92 mm) |
1-31/32” (50 mm) |
H1F-16 |
R9F Hardened Washers
| Bar Diameter |
Outside Diameter |
Inside Diameter |
Thickness | Part Number |
|---|---|---|---|---|
| 3/8” (9.5 mm) |
1” (25 mm) |
7/16” (11 mm) |
5/64” (2 mm) |
R9F-03-436 |
| 1/2” (13 mm) |
1-1/16” (27 mm) |
17/32” (14 mm) |
9/64” (3.56 mm) |
R9F-04-436 |
| 5/8” (16 mm) |
1-5/16” (33 mm) |
11/16” (17 mm) |
9/64” (3.6 mm) |
R9F-05-436 |
| 3/4” (19 mm) |
1-7/16” (37 mm) |
13/16” (21 mm) |
9/64” (3.6 mm) |
R9F-06-436 |
| 7/8” (22 mm) |
1-3/4” (45 mm) |
15/16” (24 mm) |
5/32” (4 mm) |
R9F-07-436 |
| 1” (25 mm) |
2” (51 mm) |
1-1/16” (29 mm) |
5/32” (4 mm) |
R9F-08-436 |
| 1-1/8” (29 mm) |
2-1/4” (57 mm) |
1-3/16” (30 mm) |
5/32” (4 mm) |
R9F-09-436 |
| 1-1/4” (32 mm) |
2-1/2” (64 mm) |
1-3/8” (35 mm) |
5/32” (4 mm) |
R9F-10-436 |
| 1-3/8” (36 mm) |
2-3/4” (70 mm) |
1-1/2” (38 mm) |
5/32” (4 mm) |
R9F-11-436 |
| 1-1/2” (38 mm) |
3” (76 mm) |
1-5/8” (41 mm) |
5/32” (4 mm) |
R9F-12-436 |
| 1-3/4” (43 mm) |
3-3/8” (86 mm) |
1-7/8” (48 mm) |
7/32” (5.6 mm) |
R9F-14-436 |
| 2” (51 mm) |
3-3/4” (95 mm) |
2-1/8” (54 mm) |
7/32” (5.6 mm) |
R9F-16-436 |
R8M Beveled Washers
| Bar Diameter |
Degree of Bevel |
Outside Diameter |
Inside Diameter |
Maximum Thickness |
Minimum Thickness |
Part Number |
|---|---|---|---|---|---|---|
| 3/8” (9.5 mm) |
14° | 1-1/4” (32 mm) |
9/16” (14 mm) |
7/16” (11 mm) |
1/8” (3 mm) |
R8M-03 |
| 1/2” (13 mm) |
14° | 1-1/4” (32 mm) |
9/16” (14 mm) |
7/16” (11 mm) |
1/8” (3 mm) |
R8M-04 |
| 5/8” (16 mm) |
11° | 1-9/16” (40 mm) |
13/16” (21 mm) |
1/2” (13 mm) |
3/16” (5 mm) |
R8M-06 |
| 3/4” (19 mm) |
11° | 1-9/16” (40 mm) |
13/16” (21 mm) |
1/2” (13 mm) |
3/16” (5 mm) |
R8M-06 |
| 7/8” (22 mm) |
15° | 2-1/16” (52 mm) |
1” (25 mm) |
3/4” (19 mm) |
1/4” (6 mm) |
R8M-08S |
| 1” (25 mm) |
15° | 2-1/16” (52 mm) |
1” (25 mm) |
3/4” (19 mm) |
1/4” (6 mm) |
R8M-08S |
| 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 |
| 1-1/4” (32 mm) |
15° | 3-3/8” (86 mm) |
1-9/16” (40mm) |
1-15/64” (31 mm) |
3/8” (9.5 mm) |
R8M-12S |
| 1-3/8” (36 mm) |
15° | 3-3/8” (86 mm) |
1-9/16” (40 mm) |
1-15/64” (31 mm) |
3/8” (9.5 mm) |
R8M-12S |
| 1-1/2” (38 mm) |
15° | 3-1/2” (89 mm) |
1-3/4” (45 mm) |
1-1/4” (32mm) |
3/8” (9.5 mm) |
R8M-13S |
| 1-3/4” (43 mm) |
5° | 3-9/16” (91 mm) |
2-1/16” (52 mm) |
13/16” (21 mm) |
1/2” (13 mm) |
R8M-16 |
| 2” (51 mm) |
5° | 3-9/16” (91 mm) |
2-1/16” (52 mm) |
13/16” (21 mm) |
1/2” (13 mm) |
R8M-16 |
To achieve full strength of the system, beveled washers must be used in conjunction with a hardened washer.
