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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		 Case
Histories		 Corrosion
Protection
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
Outer
Stud
Diameter
(A)		 Maximum
Allowable
Working
Load in
Tension
(1)		 Ultimate
Strength		 Allowable
Shear of
Outer
Thread		 Torque Ft.-Lbs. D
Minimum
Embedment
in 3000 PSI
Concrete
(D)		 Cone
& Shell
Length
(B)		 Exterior
Thread
Length
(C)		 Overall
Length
(E)		 Standard
Style Part
Number
To
Expand
Shell		 On Nut
for
Tension
1/2"-13
(12 mm)		 3.13 kips
(140 kN)		 6.25 kips
(27.8 kN)		 1.6 kips
(7.1 kN)		 15 30 3-3/4"
(95 mm)		 1-1/4"
(32 mm)		 1-1/2"
(38 mm)		 *4-1/4" - (108 mm)
5-1/2" - (140 mm)
7" - (178 mm)		 S7T-04
3/4"-10
(20 mm)		 8.5 kips
(37.8 kN)		 17 kips
(75.6 kN)		 3.9 kips
(17.3 kN)		 70 100 5-1/4"
(133 mm)		 1-3/4"
(45 mm)		 1-3/4"
(45 mm)		 *5-3/4" - 146 mm)
7" - (178 mm)
8-1/2" - (216 mm)
10" - (254 mm)		 S7T-06
1"-8
(25 mm)		 11.25 kips
(50 kN)		 22.5 kips
(100 kN)		 7.2 kips
(32.0 kN)		 85 200 7-1/4"
(184 mm)		 2-9/16"
(65 mm)		 2-1/2"
(64 mm)		 *7-3/4" - (197 mm)
9" - (229 mm)
12" - (305 mm)		 S7T-08
1-1/4"-7
(32 mm)		 11.25 kips
(50 kN)		 22.5 kips
(100 kN)		 11.5 kips
(51.1 kN)		 125 240 7-3/4"
(197 mm)		 3-1/4"
(83 mm)		 3-1/4"
(83 mm)		 *9" - (229 mm)
12" - (305 mm)		 S7T-10
1-3/4"-5
(45 mm)		 37.5 kips
(167 kN)		 75 kips
(334 kN)		 22.6 kips
(101 kN)		 500 900 12-1/2"
(318 mm)		 6-1/4"
(159 mm)		 4"
(102 mm)		 *15" - (381 mm)
18" - (457 mm)		 S7T-14
2"-6
(51 mm)		 60 kips
(267 kN)		 120 kips
(534 kN)		 31.5 kips
(140 kN)		 500 2,400 16"
(406 mm)		 6-3/4"
(171 mm)		 4"
(102 mm)		 *18" - (457 mm)
24" - (610 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
Outer
Stud
Diameter
(A)		 Maximum
Allowable
Working
Load in
Tension
(1)		 Ultimate
Strength		 Allowable
Shear of
Outer
Thread		 Torque Ft.-Lbs. D
Minimum
Embedment
in 3000 PSI
Concrete
(D)		 Cone
& Shell
Length
(B)		 Exterior
Thread
Length
(C)		 Overall
Length
(E)		 Standard
Style Part
Number
To
Expand
Shell		 On Nut
for
Tension
1/2"-13
(12 mm)		 .943 kips
(4.2 kN)		 3.93 kips
(17.5 kN)		 1.81 kips
(8.0 kN)		 10 10 3-3/4"
(95 mm)		 1-1/4"
(32 mm)		 1-1/2"
(38 mm)		 *4-1/4" - (108 mm)
5-1/2" - (140 mm)
7" - (178 mm)		 S7U-3041-04
3/4"-10
(20 mm)		 2.55 kips
(11.4 kN)		 10.64 kips
(47.3 kN)		 4.26 kips
(18.9 kN)		 50 60 5-1/4"
(133 mm)		 1-3/4"
(45 mm)		 1-3/4"
(45 mm)		 *5-3/4" - 146 mm)
7" - (178 mm)
8-1/2" - (216 mm)
10" - (254 mm)		 S7U-3041-06
1"-8
(25 mm)		 4.07 kips
(18.1 kN)		 16.95 kips
(75.4 kN)		 7.73 kips
(34.4 kN)		 75 170 7-1/4"
(184 mm)		 2-9/16"
(65 mm)		 2-1/2"
(64 mm)		 *7-3/4" - (197 mm)
9" - (229 mm)
12" - (305 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.
Williams Form Engineering Corp.
S7 Anchor
Information		 S7 Anchor
Design		 S7 Anchor
Applications		 Parts &
Accessories		 S7 Anchor
Installation
Installation
Equipment		 Case
Histories		 Corrosion
Protection		 Contact Us Home
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