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Our Design Catalogue

Wedge Anchor


Welfast Wedge Anchors are fully threaded, stud type, high-grade steel anchors for use in solid concrete or grout-filled concrete masonry. It is assembled with a three-segment expansion clip and supplied complete with nut and washer. Expansion clip ensures uniform holding capacity that increases as tension is applied. The threaded stud version is available in six diameters and multiple lengths. Threaded studs are set by tightening the nut. Wedge anchors are best suited to static applications.



  • Non bottom bearing: No need for exact hole depth - Hole bottom not required to set anchor
  • Dual embossments on each clip segment: Enables clip to undercut into the concrete thereby increasing follow-up expansion should a crack occur.
  • Type 316 stainless-steel clip on stainless steel anchors: In addition to superior corrosion resistance, a stainless-steel clip offers "memory" that contributes to the anchor's performance if the hole increases in size because of a crack.
  • High Performance: Anchorage occurs near bottom of hole giving a true 360° of contact.

  • Curtain Wall
  • Barriers
  • Handrails
  • Racking
  • Structural Steel/ Steel Base Plates
  • Hand Rails
  • Heavy Plant
  • Passenger Lifts
  • Seating
  • Cable Trays
  • Pipe Support
  • Brick Shelf Angle

How to Install :

  • Drill a hole in the base material using a carbide drill bit of same diameter as the nominal diameter of the anchor to be installed. To ensure proper and secure fit, the hole drilled in the concrete should be the same diameter as the thread on the concrete wedge anchor.
  • Drill the hole to the specified embedment depth and blow it clean using compressed air blower or a brush. Overhead installations need not be blown clean. Alternatively, drill the hole deep enough to accommodate embedment depth and dust from drilling.
  • Assemble the anchor with nut and washer so that the top of the nut is flush with the top of the anchor. Place the Welfast Wedge Anchor in the fixture and drive into the hole using a hammer until washer and nut are tight against the fixture. The anchor must be driven until at least six threads are below the surface of the fixture.
  • Tighten the nut to the recommended installation torque.


Suitable for :

  • Concrete
  • Dense Natural Stone

Also known as :
Expansion Anchor Stud Anchor Redi Bolt
Through Bolt Power Bolt Kwik Bolt


Wedge Anchor with Spring Steel Ring :
Sr. No. Size Anchor Length Quantity
Pcs / Box Box / Carton Pcs / Carton
1 6 x 50 50 90 8 720
2 6 x 75 75 90 8 720
3 8 x 75 75 90 8 720
4 8 x 100 100 80 8 640
5 10 x 75 75 50 8 400
6 10 x 100 100 50 8 400
7 10 x 120 120 40 8 320
7 10 x 150 150 35 8 280
8 12 x 75 75 40 8 320
8 12 x 80 80 40 8 320
9 12 x 100 100 30 8 240
10 12 x 120 120 30 8 240
11 12 x 150 150 20 8 160
12 12 x 200 200 20 6 120
13 16 x 100 100 20 8 160
14 16 x 120 120 15 8 120
15 16 x 150 150 12 8 96
16 16 x 200 200 12 6 72
17 16 x 250 250 10 4 40
18 16 x 300 300 15 4 60
19 20 x 125 125 12 8 96
20 20 x 150 150 12 8 96
21 20 x 200 200 12 6 72
22 20 x 250 250 15 4 60
23 20 x 300 300 10 4 40


Wedge Anchor with Stainless Steel (S.S.) Ring :
Sr. No. Size Anchor Length Quantity
Pcs / Box Box / Carton Pcs / Carton
1 10 x 80 80 50 8 400
2 10 x 100 100 50 8 400
3 10 x 120 120 40 8 320
4 12 x 80 80 40 8 320
5 12 x 100 100 30 8 240
6 12 x 120 120 30 8 240
7 12 x 140 140 25 8 200
7 12 x 180 180 25 6 150
8 16 x 100 100 15 8 120
8 16 x 125 125 15 8 120
9 16 x 140 140 12 8 96
10 16 x 1800 180 15 6 90

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