Irwin Tools 585-54009 9-piece bolt extractor set pneumatic accessory
- Drill Bits
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A 7/16 inch high-speed steel jobber drill bit with a 135-degree split point and TiCN coating
The Chicago-Latrobe 43628 is a jobber length drill bit built for production drilling in metal. Its 135 degree split point reduces walking and lowers thrust force, while the TiCN coating on high speed steel extends edge life in abrasive or high-heat applications.
Machinists and maintenance technicians who need repeatable hole accuracy in steel, stainless or cast iron will benefit from the split-point geometry and wear-resistant coating. Buyers who require coolant-through capability or a different point angle for specialised materials should look at other options.
The 135 degree split point is the single feature that determines suitability; it centres the cut instantly and enables higher feed rates in hard materials compared with conventional point geometries.
Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.
| Product | |
|---|---|
| Brand name | CHICAGO-LATROBE |
| Product type | Drill Bits |
| Size & build | |
| Main material | HAWA |
Yes, the jobber length shank fits standard 1/2-inch chucks, and the 135-degree split point reduces walking so it starts cleanly in steel without needing a centre punch.
The split point should produce short, curled chips and a round hole measuring .4375 inch; excessive heat or long stringy chips indicate dullness or wrong speed.
Only the single TiCN-coated high-speed steel drill bit is supplied; cutting fluid and a case must be purchased separately.
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