A Robertson, also known as a square or Scrulox screw drive is specified as ANSIType III Square Centre and has a square-shaped socket in the screw head and a squareprotrusion on the tool. Both the tool and the socket have a slight taper.
As patents expired and awareness of their advantages spread, Robertson fastenershave become popular in woodworking and in general construction. Robertson screwbits are easy to use one-handed, because the tapered socket tends to retain thescrew, even if it is shaken.
Universal hexagonal shaft in 6,35 mm (¼ inch)
Based on the Standard Bit, the other bits are optimized by means of various hardening and coating methods. It provides a consistent hardness of ~700HV and features a highly accurate fit in the screw.
The Classic Robertson Bit is hardened using a special procedure. The tough version resulting from this method meets the demands across all areas of industry and craft.
Tip: | SQUARE RECESS | ROBERTSON |
Tip Size: | No. 2 |
Hex Shank Size: | ¼' |
Length: | 25 mm |
Packaging | 2 Pack (Carded packaging) |