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Galvanized Concrete Stud Anchors

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Stud Anchor Bolts (also known as Wedge Anchors or Quick-Bolts) are used for securing items to Solid Concrete. When the nut is tightened against the washer (or item being mounted), this action pulls the concrete stud anchor up and the tapered end expands the sleeve section, wedging it tightly against the sides of the hole.  The hole diameter required is the same as the diameter of the Stud Anchor being used. Stud Anchors are available in Plated Steel, Galvanized Steel, 18-8 Stainless Steel and 316 Stainless Steel.

Installation Instructions 

1.  Drill the hole, whose diameter equals the anchor diameter, perpendicular to the work surface. To assure full holding power, do not ream the hole or allow the drill to wobble.

Drill the hole deeper than the intended embedment, but not closer than two diameters to the opposite surface of the concrete.

2.  A clean hole is necessary for proper performance. Clean the hole using a nylon brush and compressed air.

3.  Assemble the nut and washer onto the anchor. Drive the anchor through the material to be fastened at the calculated embedment depth.

4.  Tighten the nut, or head, 3 to 5 turns past the hand tight position. Installing with a torque wrench is recommended for optimum performance. Refer to Recommended Setting Torque* in the table below.

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Anchor Dia. (in.)

Drill Bit Dia. (in.)

Fixture Clearance Hole (in.)

Thread Size (UNC)

Nut Height (in.)

Washer Diameter (in.)

Wrench Size (in.)

Recommended Setting Torque (ft-lbs)*

Zinc & Galvanized

Stainless Steel

W/O Inspection Turns to Set

1/4

1/4

      5/16

1/4-20

7/32

      5/8

7/16

6-8

4-8

3-5

3/8

3/8

      7/16

3/8-16

21/64

     13/16

9/16

20-25

20-25

3-5

1/2

1/2

      9/16

1/2-13

7/16

    1-1/16

3/4

50-55

40-50

3-5

5/8

5/8

     11/16

5/8-11

35/64

    1-3/4

15/16

90-95

80-90

3-5

3/4

3/4

     13/16

3/4 -10

41/64

2

1-1/8

165-175

145-155

3-5

7/8

7/8

     15/16

7/8-9

3/4

     2-1/4

1-5/16

240-250

220-230

3-5

1

1

     1-1/8

1-8

55/64

     2-1/2

1-1/2

290-300

255-280

3-5

1-1/4

1-1/4

     1-3/8

11/4-7

1-1/16

3

1-7/8

400-410

390-400

3-5

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