Wej-it Fastening Systems
POWER-Skru SS
POWER-Skru SS

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POWER-Skru™ Large Diameter Concrete Screw

This heavy-duty bolt anchor with self-tapping threads offers a unique undercutting design for anchoring into concrete and masonry. No secondary setting in needed. This large diameter concrete screw provides high-strength performance with low installation torque.

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Materials / Finishes

  • Zinc-electroplated, heat-treated carbon steel
  • Mechanically galvanized, heat treated carbon steel
  • Type 316 stainless steel with bi-metal carbon steel threads

Features and Benefits

  • Serrated washer head facilitates positive lock between bolt and application surface for enhanced vibration and shock resistance
  • Hardened self-tapping threads feature a revolutionary undercutting design — allows for immediate load application and reduces required installation torque
    • Can be removed and reinstalled
    • Anchor length is stamped on the head to ease identification pre and post-installation
    • Easier and faster installation than mechanical expansion anchors
    • Prepare hole with lower cost ANSI B212.15 standard bit: no metric or off-sized bits needed
    • Heat treatment provides surface and core hardness
    • No expansion forces being applied to base material means shorter spacing and edge distance requirements
Installation
Part Numbers
Catalog Number
Anchor Size
Drill Bit Dia.
Baseplate Clearance Hole
Box Quantity
Carton Quantity
ATEZG1413
1/4 x 1-3/4
1/4
3/8
100
800
ATEZG1421
1/4 x 2-1/4
1/4
3/8
100
800
ATEZG1430
1/4 x 3
1/4
3/8
100
800
ATEZG3813
3/8 x 1-3/4
1/4
1/2
50
400
ATEZG3830
3/8 x 3
3/8
1/2
50
400
ATEZG3840
3/8 x 4
3/8
1/2
50
400
ATEZG3850
3/8 x 5
3/8
1/2
25
200
ATEZG3860
3/8 x 6
3/8
1/2
25
200
ATEZG1230
1/2 x 3
1/2
5/8
20
160
ATEZG1240
1/2 x 4
1/2
5/8
20
160
ATEZG1250
1/2 x 5
1/2
5/8
20
160
ATEZG1260
1/2 x 6
1/2
5/8
20
160
ATEZG1270
1/2 x 7
1/2
5/8
20
80
ATEZG1280
1/2 x 8
1/2
5/8
20
80
ATEZG5840
5/8 x 4
5/8
3/4
10
80
ATEZG5850
5/8 x 5
5/8
3/4
10
80
ATEZG5860
5/8 x 6
5/8
3/4
10
80
ATEZG5870
5/8 x 7
5/8
3/4
10
80
ATEZG5880
5/8 x 8
5/8
3/4
10
80
ATEZG3440
3/4 x 4
3/4
7/8
10
80
ATEZG3450
3/4 x 5
3/4
7/8
10
60
ATEZG3460
3/4 x 6
3/4
7/8
10
60
ATEZG3470
3/4 x 7
3/4
7/8
5
30
power skru installation
  1. Using the proper size carbide bit, drill a pilot hole at least 1/2" deeper than the desired anchor embedment.
  2. Clean the hole using a nylon brush and compressed air.
  3. Solid Concrete: Using an electric impact wrench, or socket wrench, insert anchor through the fixture into hole and tighten anchor until fully seated. If using an electric impact wrench, start on light torque setting to prevent over-torqueing or damaging threads.
  4. Concrete Block (CMU) Using a socket wrench insert anchor into hole and hand tighten anchor until fully seated. Do not use an impact wrench for installation into CMU walls.

NOTE: Always wear safety glasses.