Counterbores N with a diameter of 50mm and larger are all made with a driving lip. These sizes should be used in the appropriate type M toolholder.

Dimensions (mm) N, NA & W
Counterbores N, and NA with Ø of 50 mm and larger are all made with a driving lip. These sizes should be used in the appropriate type M toolholder
d: 14.0; d1: 6.0; L: 48.0; L1: 28.0.

Series L100 HSS straight shank long series drills are excellent general purpose drills which are designed to drill steels with tensile strength up to 1,000N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite.

Features and Benefits
• Manufactured from HSS for improved toughness
• Black oxide coating for greater heat and wear resistance
• Ideal for general purpose drilling

Typical Applications
• Drilling
• Steels
• Grey cast iron
• Malleable cast iron
• Nickel brass
• Graphite

Standards
• Manufactured to BS 328; Part 1: 1986, DIN 340 RN, ISO 494

This range of metric thread repair inserts includes 1xD, 1.5xD and 2xD lengths (ISO Metric threads). Our quality inserts are now supplied in packs of 10 or 50.

Features and Benefits
• Available in packs of 10 or 50 depending on your selection
• Easy and effective way of repairing threads
• Available in a range of sizes to suit your needs

Typical Applications
• Construction
• Automotive
• Engineering

FC40 - T-Slot Bolt
Material: Medium Carbon Steel.
Hardness: HRC 32 - 38.
Surface Finish: Black Oxide.