29PC 135 Degree Heavy-Duty Cobalt Jobber Length Drill Set Chicago-Latrobe 550-TN TiN HSS-CO 1/16-1/2x1/64

The CHICAGO-LATROBE 69870 is a jobber-length drill bit set consisting of 29 cobalt bits with sizes ranging from 1/16 inch to 1/2 inch in fractional increments. Intended for machining applications; see specifications for applicable material groups and ISO groups. These drill bits feature P3 split points with a 135-degree angle and a right-hand spiral direction. Includes a metal index case. Rated as NAS 907 Type J, Type J straight shank drill bits. Rated as NAS 907 Type J. Compatible with ISO material groups H, K, M, N, P, S (as specified). Overall length: 1 7/8 in to 6 in (by bit size). The set accommodates multiple materials including aluminum, cast iron, hardened steel, stainless steel, steel, and titanium. It includes a metal index case for bit storage and organization. The drill bits have a straight shank diameter of 1/6 inch.

Key Features:

• Material: cobalt (grade as specified).
• Drill bit sizes include incrementals from 1/16" up to 1/2".
• Number of flutes: 2, spiral design with right-hand direction.
• Overall length: 1 7/8 in to 6 in (by bit size).
• Shank type: Straight, shank diameter 1/6 inch.
• Drill length class: Jobber length.
• Finish: Titanium Nitride (TiN) coating.
• Includes a metal index case.
• Rated as NAS 907 Type J.
• Compatible with ISO material groups H, K, M, N, P, S.