Machine screw anchors are used in light to medium duty applications in concrete, brick, block or stone. The machine screw anchor is flush internal threaded female anchor that requires a setting tool to expand the anchor.

Description

The machine screw anchor has two parts. The sleeve and the internal threaded cone. The machine screw anchor requires the use of a setting tool. Each diameter machine screw anchor has its own unique setting tool.

Also Known as:

Hollow wall anchor, Caulkin anchor, Sup-r-caulk, Hollow set, drop-in anchor, Caulkin anchor, AJS, Hollow set, Caulk-in, Steel drop-in anchor, Calk-in

Machine Screw anchor Features

• Light to medium loads under dead or variable conditions in a variety of base material.
• Highly corrosive resistant
• Can remove or replace fixture and refasten without loss of holding values.
• Can be used in concrete, brick, block or stone
• Use with machine screw or bolt
• Fits into irregular holes

Machine Screw Anchor Listings

G.S.A Spec FF-S-325C, Group I, type 1, Class 1

Machine Screw Anchor Sizes

Machine screw anchors come in six (6) different sizes, #10, 1/4”, 5/16”, 3/8”, 1/2”,5/8” and 3/4”. The size refers to the inside diameter.

Machine Screw Anchor Spacing

The forces on a machine screw anchor are transferred to the base material that it is installed in. If the anchors are installed too close together, it can cause an interaction of the forces, thus reducing the holding power of the anchor. As a rule of thumb, the expansion industry has established a minimum standard of ten (10) anchor diameters for spacing between anchors and five (5) anchor diameters from the edge. When vibration or sudden impact are part of the load conditions, spacing between anchors should be increased.

Bolt Length

Thickness of material to be fastened plus anchor length equals bolt length.

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