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Jobber Drill Bits

America´s Finest High–Speed Cutting Tools™

PRODUCT CATALOG >> HSS Jobber Length Fractional & Metric Drills

Type 190-AG Magnum Super Premium
    HSS 135° Split Point NAS 907B Type 190-AG
    Low temperature stress relief improves lubricity and toughness.

    Manufactured to NAS 907B specification from Premium Hi-Molybdenum steel.

    Magnum will substantially outperform cobalt drills in work hardening stainless steel and other tough drilling applications.
      Download: PDF

Type 128-AG Magnum Super Premium
    HSS 3/8" Reduced Shank Type 128-AG
    135° Split point for fast penetration and accurate starting without center punch.

    Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance.
      Download: PDF

Type 170-AG Magnum Super Premium
    HSS METRIC 135˚ Split Point NAS 907 B Type 170-AG
    Withstands substantially higher drilling temperatures while maintaining sharpness.

    Recommended for use in work hardening grades of stainless steel and other hard metal drilling applications.
    Adobe Acrobat  Download: PDF

Jobber length drill bit: These bits can be measured using a number of different systems including a Basic number range (#1 - 80), Letters (A - Z), Wire (increase by whole number), standard metric sizing or in fractional sizes.

Chips separate in either of THREE ways: 1) They break by themselves
2) They break against the tool
3) They break against the work-piece.

The chips you generally want to aim for are the self-breaking kind.
Chips that break against the tool can cause chip hammering and tool breakage.
Those that break against the workpiece can damage surface finish.

Drill & Tap Products —

18 pc. Spiral Point, NC Tap & Drill Set - Norseman Drill
CN-TECH™ Cryogenic Nitrided HSS Products Set
Taper Pipe Taps - Regular & Interrupted - Norseman Drill and Tool
CAR Reamers Fast Spiral 3-Flats on Shank - Norseman Drill
High Performance Reduced Neck Spiral Point Gold Oxide, Titanium Nitride, Titanium Carbon Nitride, Titanium Aluminum Nitride
Left Hand Heavy Duty Jobber Length - Norseman Drill and Tool
10pc Screw and Bolt Extractor Set - Norseman Drill and Tool
Ultra Bit™ Multi-Diameter 3-flats on Shank - Norseman Drill
29pc. Blaze Orange Ultra Dex 135° Split Point NAS 907B Jobber Length - Norseman Drill