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S-7 Reusable Concrete Anchor System

S7 Anchor
Information
S7 Anchor
Design
S7 Anchor
Applications
Parts &
Accessories
S7 Anchor
Installation
Installation
Equipment
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The S-7 anchor consists of a reliable torque controlled expansion anchor assembly similar to the Spin-Lock, however the S-7 drill hole diameter is the same size as the anchor stud diameter. This non-grouted anchor system is easy for contractors to install and the fast setting procedure saves time and money on important anchor installations. S-7 anchors are ideal for conditions that do not require cement grout as a corrosion protection barrier and are generally specified as a multi-purpose product with re-usable capabilities. The head assembly boasts a full 300? bearing area. S-7 anchors come complete with outer hex nut and washer. Zinc plating for corrosion protection is standard up to 1” diameter bolts and optional on larger sizes. Anchors are also available in stainless up to 1” in diameter. S-7 Reusable Spin-Lock Concrete Anchors

S-7 Advantages
  • Smaller drill holes
  • Removable outer stud for reuse 
  • Field proven expansion anchor 
  • Convenient patching after removal
  • Prestressable
  • Anchor outer studs & heads can be purchased separately

S-7 Reusable Concrete Anchor Studs

S-7 anchors are available with a variety of removable outer studs for special applications.

Type A Typical for outer stud diameters over 1”.
Type B For applications where a recessed, tapped hole is required. Type B anchors are usually flush with the concrete surface and installed with a special Williams setting tool.
Type C For stringing cable or wire though the anchor end. This anchor is often used for wire hangers or guy type anchorages.
Type D Typical for outer stud diameters of 1” or smaller. Outer stud end has flats which allow for easy anchor removal.
Type E When type A, B, C or D anchor studs are removed, a type E stud can be used as a temporary hole plug. The outer stud end has a notch to fit a flat head screwdriver.
S-7 Reusable Concrete Anchor - Standard Carbon Steel Grade
Diameter
& Threads
per Inch
Ultimate Strength
Inner Stud
(fu)
Ultimate Strength
Outer Stud
(fu)
Nominal
Shear
Strength of
Outer Thread
(Vsa)
Torque Ft-Lbs Minimum
Embedment
(3000 PSI - f’c)
Minimum
Embedment
(6500 PSI - f’c)
Cone
& Shell
Length
(B)
Exterior
Thread
Length
(C)
Part
Number
To
Expand
Shell
On Nut
for
Tension
1/2"-13
(12 mm)
6.28 kips
(28.0 kN)
9.9 kips
(44 kN)
5.96 kips
(26.5 kN)
15 30 4-1/2”
(114 mm)
3-1/2”
(89 mm)
1-1/4”
(32 mm)
1-1/2”
(38 mm)
S7T-04
3/4"-10
(20 mm)
17.0 kips
(75.7 kN)
23.4 kips
(104 kN)
14 kips
(62.3 kN)
70 100 7-3/4”
(197 mm)
6”
(153 mm)
1-3/4”
(45 mm)
1-7/8”
(48 mm)
S7T-06
1"-8
(25 mm)
27.1 kips
(121 kN)
42.4 kips
(189 kN)
25.4 kips
(113 kN)
85 200 8-1/2”
(216 mm)
6-1/2”
(165 mm)
2-9/16”
(65 mm)
2-1/2”
(64 mm)
S7T-08
1-1/4"-7
(32 mm)
27.1 kips
(121 kN)
67.8 kips
(302 kN)
40.7 kips
(181 kN)
125 240 8-1/2”
(216 mm)
6-1/2”
(165 mm)
3-1/4”
(83 mm)
3-1/4”
(83 mm)
S7T-10
1-3/4"-5
(45 mm)
72.7 kips
(323 kN)
133 kips
(592 kN)
79.8 kips
(355 kN)
500 900 16-1/2”
(419 mm)
12-3/4”
(324 mm)
6-1/4”
(159 mm)
4”
(102 mm)
S7T-14
2"-6
(51 mm)
102 kips
(454 kN)
175 kips
(778 kN)
105 kips
(467 kN)
500 1,500 20-1/2”
(521 mm)
16”
(406 mm)
6-3/4”
(171 mm)
4”
(102 mm)
S7T-16
(1) Maximum recommended working load is based on 1/2 of ultimate strength.
* Recommended for type B only, to achieve full embedment.
Stainless S-7 Reusable Concrete Anchor - ASTM A193 (304) B8 Class1
Diameter
& Threads
per Inch
Ultimate Strength
Inner Stud
(fu)
Ultimate Strength
Outer Stud
(fu)
Nominal
Shear
Strength of
Outer Thread
(Vsa)
Torque Ft-Lbs Minimum
Embedment
(3000 PSI - f’c)
Minimum
Embedment
(6500 PSI - f’c)
Cone
& Shell
Length
(B)
Exterior
Thread
Length
(C)
Part
Number
To
Expand
Shell
On Nut
for
Tension
1/2"-13
(12 mm)
3.93 kips
(17.5 kN)
10.6 kips
(47.3 kN)
6.38 kips
(28.4 kN)
10 10 3”
(77 mm)
2”
(51 mm)
1-1/4”
(32 mm)
1-1/2”
(38 mm)
S7U-3041-04
3/4"-10
(20 mm)
10.6 kips
(47.2 kN)
25 kips
(111 kN)
15 kips
(66.7 kN)
50 60 5”
(127 mm)
4”
(102 mm)
1-3/4”
(45 mm)
1-7/8”
(48 mm)
S7U-3041-06
1"-8
(25 mm)
17.0 kips
(75.6 kN)
45.5 kips
(202 kN)
27.3 kips
(121 kN)
75 170 7”
(178 mm)
6”
(153 mm)
2-9/16”
(65 mm)
2-1/2”
(64 mm)
S7U-3041-08
(1) Maximum recommended working load is based on 1/2 of ultimate strength.
* Recommended for type B only, to achieve full embedment.
Stainless S-7 Reusable Concrete Anchor - ASTM A193 (304) B8 Class1
Shear through hex headed Grade 8 bolt
Diameter
& Threads
per Inch
Average Unfactored
Ultimate Strength
Grade 8 Bolt
(fu)
Nominal Shear
Strength of
Grade 8 Bolt
(Vsa)
5/16” - 18
(8 mm)
6.55 kips
(29 kN)
3.93 kips
(17.5 kN)
1/2” - 13
(13 mm)
17.7 kips
(78.7 kN)
10.6 kips
(47 kN)
5/8” - 11
(16 mm)
28.3 kips
(126 kN)
17 kips
(75.6 kN)
1” - 8
(25 mm)
75.8 kips
(337 kN)
45.5 kips
(202 kN)
1-1/4” - 7
(32 mm)
121 kips
(538 kN)
72.6 kips
(323 kN)
Williams Form Engineering Corp.
S7 Anchor
Information
S7 Anchor
Design
S7 Anchor
Applications
Parts &
Accessories
S7 Anchor
Installation
Installation
Equipment
Case
Histories
Corrosion
Protection
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