TAMPIN® BRAND
MACHINE SCREW ANCHOR

Description:

The open bottom nut Tampin® Machine Screw Anchor is made up of an antimonial lead alloy sleeve and a zinc alloy (Zamak 5) internally threaded cone with a series of integral ribs, serrations, or lugs. The ribs or serrations prevent the cone shaped nut from turning in the sleeve. All bolt size anchors, except the 3/4" size, are preassembled into a single unit, self-contained anchor. All units are made of 100% rust proof material. (The 3/4" bolt size is sometimes furnished as three separate units, a cone shaped nut and two sleeves. The volume of lead alloy required for the proper installation of this bolt size is broken into two units to ensure the ease and thoroughness of caulking the nut into the concrete hole.) Tampin® anchors are also available in select sizes with a brass cone for the storm shutter industry.

Potential Uses:

• Storm Shutters
• Conduit Clips
• Pipe Hangers & Straps
• Electrical Switch Gear
• Air Conditioning Units
• Air Duct Hangers
• Temperature Control Tubes
• Conveyor Systems
• Machinery
• Metal Window Sashes
• Handrails

Description:

The closed bottom nut Tampin® anchor is an improved redesign of the original. The bottom of the threaded hole in the cone shaped nut is closed by a thin section of metal. This further identifies the proper end of the anchor to be inserted first into the hole in the concrete. It makes it impossible to fasten an object to the anchor if a workman has mistakenly installed the anchor wrong end out. It also prevents concrete dust or cutting that might remain in the hole from working up into and fouling the anchor threads during installation.

Potential Uses:

• Same as open bottom plus
• Tile and marble applications

Determining Anchor Spacing:

The forces on a Tampin® Machine Screw Anchor are transferred to the 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 condition, spacing between anchors should be increased.

Note: All weights and load conditions described or referenced in this material were determined under laboratory conditions. Material and installation conditions vary in the field. To determine your holding factors, test product in actual conditions and materials.

Determining Correct Bolt Length:

Installation:

1. Drill hole of recommended diameter into the concrete to a depth equal to the length of the anchor. Place Tampin® anchor, base end of the conical nut first, into the hole. The anchor should be flush or slightly deeper than the surface of the concrete. A deeper hole should be used when making attachments to poor masonry or when additional holding power is needed.

    

2. Position the pilot of the Tampin® Setting Tool into the threaded bore of the anchor and press firmly against the lead alloy sleeve of the anchor. Using a hand hammer, strike the end of the setting tool with repeated sharp blows. Anchoring is complete when the lead alloy sleeve cannot be further tamped or caulked down around the conical nut.

    

3. Position the object to be fastened over the anchor and bolt into place. The length of the screw or bolt should equal the thickness of the material being fastened, plus the additional length required to ensure that the screw engages a major portion of the internal threads of the anchor.