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Jobber Length Drill Bits

America´s Finest High–Speed Cutting Tools™

PRODUCT CATALOG >> Jobber Length (Fractional & Metric) Drills

Jobber Length Magnum Super Premium Type 190-AG
    Jobber Length 135° Split Point NAS 907B
    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.
    HSS Jobber Length Heavy Duty Type 190-AG  Download: PDF

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

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

    Recommended for use in work hardening grades of stainless steel and other hard metal drilling application.
    HSS Jobber Length Type 128-AG - 3/8" Reduced Shank  Download: PDF

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

    135° split point provides fast penetration and accurate starting without a center punch.

    Recommended for use in work hardening grades of stainless steel and other hard metal drilling applications.
    HSS Jobber Length Heavy Duty Type 170-AG  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