B7S Spin-Lock Rock Bolt

Williams B7S Coil All-Thread Spin-Lock Rock Anchor Bolt utilizes C-1045 steel which provides high strength capacity and has the advantage of utilizing more common steel for greater availability.

Meets strength of ASTM A325

B7S Structural Properties

Diameter
Range
Yield
Stress
Ultimate
Stress
Elongation in
2” Gauge Length
Reduction
of Area
1/2” to 1”
(13 to 25 mm)
92 KSI
(634 MPa)
120 KSI
(827 MPa)
11% min 20% min
1-1/8” and up
(29 mm)
81 KSI
(558 MPa)
105 KSI
(723 MPa)
11% min 20% min

 

Diameter
& Threads
per Inch
Max Factored
Design Load
(1)
Yield
Strength
(fy)
Ultimate
Strength
(fu)
Drill Hole
Diameter
(2)
Type
Head
Assembly
Torque ft-lbs Minimum
Embedment
(3000 PSI – f’c)
(6)
Minimum
Embedment
(6500 PSI – f’c)
(6)
Part
Number
To Expand
Shell (3)
On Nut for
Tension (4)
1/2” – 13
(13 mm)
11 kips
(48.9 kN)
13 kips
(57.8 kN)
17 kips
(75.6 kN)
1-1/4”
(32 mm)
A 10 50 ft-lbs
(70*)
85 ft-lbs 7”
(178 mm)
5”
(127 mm)
B7S04A10
5/8” – 11
(16 mm)
17.6 kips
(78.3 kN)
20.8 kips
(92.5 kN)
27.1 kips
(121 kN)
1-1/4”
(32 mm)
A 10 125 ft-lbs
(250*)
125 ft-lbs 9”
(229 mm)
7”
(178 mm)
B7S05A10
3/4” – 10
(19 mm)
26.1 kips
(116 kN)
30.7 kips
(137 kN)
40.0 kips
(178 kN)
1-3/4”
(44 mm)
C 14 210 ft-lbs
(250*)
210 ft-lbs 11”
(279 mm)
9”
(229 mm)
B7S06C14
7/8” – 9
(22 mm)
36 kips
(160 kN)
42.5 kips
(189 kN)
55.4 kips
(246 kN)
1-3/4”
(44 mm)
C 14 390 ft-lbs
(410*)
­390 ft-lbs 14”
(356 mm)
11”
(279 mm)
B7S07C14
1” – 8
(25 mm)
47.3 kips
(210 kN)
55.7 kips
(248 kN)
72.7 kips
(323 kN)
1-3/4”
(44 mm)
C 14 500 ft-lbs
(600*)
550 ft-lbs 17”
(432 mm)
13”
(330 mm)
B7S08C14
1-1/8” – 7
(29 mm)
52 kips
(231 kN)
61.8 kips
(275 kN)
80.1 kips
(356 kN)
2-1/4”
(57 mm)
C 18 550 ft-lbs
(600*)
770 ft-lbs 18”
(457 mm)
14”
(356 mm)
B7S09C18
1-1/4” – 7
(32 mm)
66.1 kips
(294 kN)
78.5 kips
(349 kN)
102 kips
(452 kN)
2-1/4”
(57 mm)
C 18 750 ft-lbs
(1200*)
1000 ft-lbs 21”
(533 mm)
16”
(406 mm)
B7S10C18
1-1/2” – 6
(38 mm)
95.9 kips
(427 kN)
114 kips
(506 kN)
148 kips
(656 kN)
3”
(76 mm)
B 24 1000 ft-lbs
(1700*)
Note (5) 27”
(686 mm)
21”
(533 mm)
B7S12B24

(*)Do not exceed these numbers
(1) Max factored design load is based on steel strength and shall not excede yield strength.***Note – ACI 318 limits the nominal strength of the anchor rod to 1.9*fy or 125 KSI, whichever is less***
(2) Care should be taken to drill a straight and properly sized hole.
(3) More torque may be required on long anchors or if the head assembly is next to rebar. Consult your Williams Representative for more specific details.
(4) All above torque values are for greased (MolyKote GN) threads.
(5) Stress to desired tensile load using a hollow ram hydraulic jack. Consult your Williams Representative.
(6) Full ultimate strength of anchor can be achieved at listed embedment depth, provided there are no edge or spacing effects on the anchor.
(7) WILLIAMS reserves the right to ship full length or coupled units as necessary

Head Assemblies

The Williams Spin-Lock anchor assembly gives full 300 degree bearing area. The smooth shell design allows for maximum shell to rock contact and eliminates “point of contact” created by serrated designs. The cone design supports the shell 300°, thereby eliminating any possible collapse of the shell under high load conditions. The thrust ring stop in front of the shell prevents any possible rebound of the expanded shell down the cone when subjected to nearby blasting.The Williams Spin-Lock anchor has been field proven on the world’s largest projects to far exceed in tension capacity any other mechanical anchor on the market.

 

Head
Assembly
Drill Hole
Diameter
Diameter
& Threads
per Inch
Cone Shell Thrust Ring Slip
Rings
Overall
Assembly
Length
Length Part No. Length Part No. Diameter Thickness
A10 1-1/4”
(32 mm)
1/2” – 13 NC
(13 mm)
1-7/8”
(48 mm)
SC-114-4 1-7/8”
(48 mm)
SS-114 1-1/8”
(29 mm)
9/16”
(14 mm)
1/16”
(1.6 mm)
4-7/16”
(112 mm)
5/8” – 11 NC
(16 mm)
1-7/8”
(48 mm)
SC-114-5 1-7/8”
(48 mm)
SS-114 1-1/8”
(29 mm)
9/16”
(14 mm)
1/16”
(1.6 mm)
4-7/16”
(112 mm)
B14 1-3/4”
(44 mm)
1” – 8 NC
(25 mm)
3-3/4”
(95 mm)
LC-158-8 3-3/4”
(95 mm)
LS-175 1-5/8”
(41 mm)
15/16”
(24 mm)
1/16”
(1.6 mm)
8-1/2”
(216 mm)
B16 2”
(51 mm)
7/8” – 9 NC
(22 mm)
2-1/2”
(64 mm)
LC-200-7 4”
(102 mm)
LS-200 1-7/8”
(48 mm)
15/16”
(24 mm)
1/16”
(1.6 mm)
7-3/8”
(187 mm)
1” – 8 NC
(25 mm)
2-1/2”
(6 mm)
LC-200-8 4”
(102 mm)
LS-200 1-7/8”
(48 mm)
15/16”
(24 mm)
1/16”
(1.6 mm)
7-3/8”
(187 mm)
1-1/8” – 7 NC
(29 mm)
2-1/2”
(6 mm)
LC-200-9 4”
(102 mm)
LS-200 1-7/8”
(48 mm)
1-1/8”
(29 mm)
1/16”
(1.6 mm)
7-1/2”
(191 mm)
B20 2-1/2”
(65 mm)
1-1/4” – 7 NC
(32 mm)
4”
(102 mm)
LC-250 4”
(102 mm)
LS-250 2-1/8”
(54 mm)
1-1/4”
(32 mm)
9/64”
(3.6 mm)
9-1/2”
(241 mm)
1-3/8” – 8 NC
(35 mm)
4”
(102 mm)
LC-250 4”
(102 mm)
LS-250 2-1/8”
(54 mm)
1-3/8”
(35 mm)
9/64”
(3.6 mm)
9-5/8”
(244 mm)
B24 3”
(76 mm)
1-1/2” – 6 NC
(38 mm)
5-1/2”
(140 mm)
LC-300 5-1/2”
(140 mm)
LS-300 2-3/4”
(70 mm)
1-1/2”
(38 mm)
1/2”
(12.7 mm)
12-7/8”
(325 mm)
1-3/4” – 5 NC
(45 mm)
5-1/2”
(140 mm)
LC-300 5-1/2”
(140 mm)
LS-300 2-3/4”
(69.9 mm)
1-3/4”
(45 mm)
1/8”
(3.2 mm)
13”
(330 mm)
C14 1-3/4”
(44 mm)
3/4” – 10 NC
(19 mm)
4-1/4”
(108 mm)
LCF-175-6 3-3/4”
(95 mm)
LS-175 1-5/8”
(41 mm)
1-1/4”
(32 mm)
1/16”
(1.6 mm)
9-3/8”
(238 mm)
7/8” – 9 NC
(22 mm)
4-1/4”
(108 mm)
LCF-175-7 3-3/4”
(95 mm)
LS-175 1-5/8”
(41 mm)
1-3/8”
(35 mm)
1/16”
(1.6 mm)
9-1/2”
(241 mm)
1” – 8 NC
(25 mm)
4-1/4”
(108 mm)
LCF-175-8 3-3/4”
(95 mm)
LS-175 1-5/8”
(41 mm)
1-1/2”
(38 mm)
1/16”
(1.6 mm)
9-5/8”
(244 mm)
C18 2-1/4”
(57 mm)
1-1/8” – 7 NC
(30 mm)
4-7/8”
(124 mm)
LCF-225-9 4”
(102 mm)
LS-225 2”
(51 mm)
1-1/4”
(32 mm)
1/16”
(1.6 mm)
10-1/4”
(260 mm)
1-1/4” – 7 NC
(32 mm)
4-7/8”
(124 mm)
LCF-225-10 4”
(102 mm)
LS-225 2”
(51 mm)
1-1/4”
(32 mm)
1/16”
(1.6 mm)
10-1/4”
(260 mm)
C28 3-1/2”
(89 mm)
1-7/8” – 8 UN
(48 mm)
7”
(178 mm)
LCF-350-16 6”
(152 mm)
LS-350 2-7/8”
(73 mm)
1-7/8”
(48 mm)
1/8”
(3.2 mm)
15-1/8”
(384 mm)
2” – 6 UN
(51 mm)
7”
(178 mm)
LCF-350-16 6”
(152 mm)
LS-350 2-7/8”
(73 mm)
2”
(51 mm)
1/8”
(3.2 mm)
15-1/4”
(387 mm)

* Hollow-Core Spin-Lock only


Coupled Head Assemblies

Williams can manufacture Spin-Lock Anchor systems with the use of a transition coupling, which allows the anchor to be designed with a continuously workable thread-form. This is advantageous when the anchor length may need to be adjusted in the field due to variable site conditions. The transition coupling engages a continuously threaded U.N. bar into the head assembly and the All-Thread Bar (typically Grade 75 All-Thread Rebar or 150 KSI All-Thread-Bar) is attached to the other end of the coupling.


 

C2T Stopy-Type & Flange Couplings

Bar
Diameter
Outside
Diameter
Overall
Length
Stop-Type
Part Number
Flange Coupling
Flange Size Part Number
1/4”
(6.4 mm)
1/2”
(13 mm)
7/8”
(22 mm)
C2T-02
3/8”
(9.5 mm)
3/4”
(19 mm)
1-1/2”
(38 mm)
C2T-03 2” x 2”
(51 x 51 mm)
C2D-03
1/2”
(13 mm)
3/4”
(19 mm)
1-1/2”
(38 mm)
C2T-04 2” x 2”
(51 x 51 mm)
C2D-04
5/8”
(16 mm)
1”
(25 mm)
1-3/4”
(45 mm)
C2T-05 2” x 2”
(51 x 51 mm)
C2D-05
3/4”
(19 mm)
1-1/8”
(29 mm)
2”
(51 mm)
C2T-06 2” x 2”
(51 x 51 mm)
C2D-06
7/8”
(22 mm)
1-1/4”
(32 mm)
2-1/4”
(57 mm)
C2T-07 3” x 3”
(76 x 76 mm)
C2D-07
1”
(25 mm)
1-1/2”
(38 mm)
3”
(76 mm)
C2T-08 3” x 3”
(76 x 76 mm)
C2D-08
1-1/8”
(29 mm)
1-5/8”
(41 mm)
3-1/2”
(89 mm)
C2T-09 3” x 3”
(76 x 76 mm)
C2D-09
1-1/4”
(32 mm)
1-7/8”
(48 mm)
3-3/4”
(95 mm)
C2T-10 3” x 3”
(76 x 76 mm)
C2D-10
1-3/8”
(35 mm)
2-1/8”
(54 mm)
4”
(102 mm)
C2T-11 3” x 3”
(76 x 76 mm)
C2D-11
1-1/2”
(38 mm)
2-1/4”
(57 mm)
5”
(127 mm)
C2T-12 3” x 3”
(76 x 76 mm)
C2D-12
1-3/4”
(45 mm)
2-1/2”
(64 mm)
5-1/2”
(140 mm)
C2T-14 4” x 4”
(102 x 102 mm)
C2D-14
1-7/8”
(48 mm)
2-7/8”
(73 mm)
6”
(152 mm)
C2T-15
2”
(51 mm)
3”
(76 mm)
6”
(152 mm)
C2T-16
2-1/4”
(57 mm)
3-1/2”
(89 mm)
8”
(203 mm)
C2T-18

H1F Heavy Duty Hex Nuts

Bar
Diameter
Across
Flats
Across
Corners
Thickness Part
Number
1/4”
(6.4 mm)
1/2”
(13 mm)
0.6”
(15 mm)
15/64”
(6 mm)
H1F-02
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
1-7/8”
(48 mm)
2-15/16”
(75 mm)
3.4”
(86 mm)
1-27/32”
(47 mm)
H1F-15
2”
(51 mm)
3-1/8”
(79 mm)
3.6”
(92 mm)
1-31/32”
(50 mm)
H1F-16
2-1/4”
(57 mm)
3-1/2”
(89 mm)
4”
(103 mm)
2-1/4”
(57 mm)
H1F-18

R9F Hardened Washers

Bar
Diameter
Outside
Diameter
Inside
Diameter
Thickness Part
Number
1/4”
(6.4 mm)
5/8”
(16 mm)
9/32”
(7 mm)
1/16”
(1.5 mm)
R9F-02-436
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)
9/16”
(14 mm)
9/64”
(3.56 mm)
R9F-04-436
5/8”
(16 mm)
1-3/4”
(45 mm)
11/16”
(17 mm)
9/64”
(3.6 mm)
R9F-05-436
3/4”
(19 mm)
1-15/32”
(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)
1-1/8”
(29 mm)
5/32”
(4 mm)
R9F-08-436
1-1/8”
(29 mm)
2-1/4”
(57 mm)
1-1/4”
(32 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
1-7/8”
(48 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2”
(51 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2-1/4”
(57 mm)
4”
(102 mm)
2-3/8”
(60 mm)
9/32”
(7 mm)
R9F-18-436

R8M Beveled Washers

Bar
Diameter
Outside
Diameter
Inside
Diameter
Thickness Part
Number
1/4”
(6.4 mm)
5/8”
(16 mm)
9/32”
(7 mm)
1/16”
(1.5 mm)
R9F-02-436
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)
9/16”
(14 mm)
9/64”
(3.56 mm)
R9F-04-436
5/8”
(16 mm)
1-3/4”
(45 mm)
11/16”
(17 mm)
9/64”
(3.6 mm)
R9F-05-436
3/4”
(19 mm)
1-15/32”
(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)
1-1/8”
(29 mm)
5/32”
(4 mm)
R9F-08-436
1-1/8”
(29 mm)
2-1/4”
(57 mm)
1-1/4”
(32 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
1-7/8”
(48 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2”
(51 mm)
3-3/4”
(95 mm)
2-1/8”
(54 mm)
7/32”
(5.6 mm)
R9F-16-436
2-1/4”
(57 mm)
4”
(102 mm)
2-3/8”
(60 mm)
9/32”
(7 mm)
R9F-18-436

To achieve full strength of the nut, beveled washers must be used in conjunction with a hardened washer.

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