PN: 1.5THSB Category: .

Product Description

1.5THSB Series Diamond Shank Adapters

For slotted bushings

The 1.5THSB “diamond shank” adapter provides an SMR nest for use with slotted bushings found in many  fixtures and parts.  The cross section of the shank on these adapters is a circle with two flattened sides (see sketch below).

The center of a 1.5″ SMR is held precisely 1.000″ (English unit version) or 25mm (metric unit version) from the surface of the part. It seats on a 3-point conical land and is held in place firmly by a magnet.

Customers may specify any combination of sizes for shank diameter and flat-to-flat width (see table below).

Part Number Configuration
Offset Value “A”
1.000″ 1
125 mm 25MM
Shank Diameter “B”
Customer specify, in English or metric units, max diameter 0.625″ (15.76 mm)
Shank Width “C”
Customer Specify, in English or metric units

Construct your desired part number using the legend and table above. Contact us with your specific requirements for shank diameter and flat-to-flat shank width.


May Be Used With

Any 1.5″ diameter SMR


Target centering:±0.0005″ (±0.013mm)
Offset tolerance:±0.0005″ (±0.013mm)
Shank diameter tolerance:
−0.0001″, −0.0005″ (+0.003mm, −0.013mm)
Flat-to-flat shank width tolerance: 
−0.0001″, −0.0005″ (+0.003mm, −0.013mm)
Material: Stainless steel
Hardness: HRC 42-45


PDF Download Drawing

Brunson 1.5THSB

PN: 1.5THSB Category: .