Wej-It B2229365 User Manual

POWER-Skru™ Large Diameter

USA ENGINEERED

Concrete Screw

Description

The POWER-Skru Large Diameter Concrete Screw is a high­strength screw anchor with self-tapping threads that oer a

unique undercutting design for anchoring into concrete and
masonry. No secondary setting is needed. The POWER-Skru
Large Diameter Concrete Screw provides high-strength
performance with low installation torque. A heavy­duty mechanically-galvanized nish is available to enhance
corrosion resistance.

Key Features & Benets

 Electroplated zinc or heavy-duty mechanically

galvanized nish available

 Heat treatment provides surface and core hardness

 One-piece design with nished washer head

underhead

serrations

special
thread
design

– No nuts and washers to assemble prior to installation

 Serrated head facilitates a 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

– Reduces required installation torque

 Can be removed and reinstalled – ideal for temporary

anchoring applications and those requiring service

 Anchor length is stamped on head to ease identication

pre- and post-installation

 Easier and faster installation than mechanical

expansion anchors

– Bolt Size is Hole Size®

– Prepare hole with lower-cost ANSI B212.15 standard bit –

no metric or o-size bits needed

 Less spacing and edge distance requirements - no

expansion forces applied to base material

Specications, Listings

and Approvals

Diameters: 1/4" – 3/4"

Anchor Body: Heat-treated

carbon steel

Finish:

– Electroplated zinc-plated to ASTM

B633, Type III, SC1 (1/4" dia. only)

– Mechanically galvanized to ASTM

B695, Class 65, Type 1 (all sizes)

Threads: Self-tapping threads with
special undercutting design

Head Style: One-piece hex washer
head with locking serrations

Application Materials: Normal
weight concrete, lightweight concrete,
solid masonry; may be suitable for
hollow masonry

Specs: Tested in accordance with
ASTM E488

Applications

 Racking

 Railing Sill Plates

 Stadium Seating

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 Tilt-Up Braces

 Formwork

 Anchoring Equipment

POWER-Skru™ Large Diameter Concrete Screw

Installation

(ft-lbs.)

Min.

Hole (in.)

Critical

(in.)

Washer

(in.)

Installation Information

Installation Instructions

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 xture into hole and tighten
anchor until fully seated. If using an electric impact wrench, start
on light torque setting to prevent over-torquing or damaging
threads.

3b. 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.

1

2

3 3b

Installation Data

Anchor

Drill Bit
Dia.
(in.)

1/4 1/4 8 7/16 3/8 2 3/4 3 1 1/4 1/2

3/8 3/8 25 9/16 1/ 2 3 1-1/8 4-1/2 1-1/2 3/8 3/4

1/2 1/2 55 3/4 5/8 4 1-1/2 6 2 31/64 1

5/8 5/8 95 15/16 3/4 5 1-7/8 7-1/2 2-1/2 19/32 1-5/32

3/4 3/4 150 1-1/8 7/8 6 2-1/4 9 3 45/64 1-3/8

Dia.
(in.)

Torque

Approx.

Wrench

Socket

Size (in.)

Baseplate
Clearance

Edge

Distance

Min.Edge

Distance

(in.)

Critical

Spacing

(in.)

Min.

Spacing

(in.)

Head &
Washer

Height (in.)

Outer Dia.,

Approx.

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