AMC 2026 catalogue

Machining

Drill Bits

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MACHINING

Maintenance Grade Mechanics Length Left-Hand Cobalt Drill Bits, 135°

▪Split point ▪Straw finish Left-hand helix for use where machine spindles rotate counterclockwise. Reverse action allows tools to be substituted for screw extractors. 8% cobalt HSS allows drill bit to run cooler and last longer. Shorter length provides superior rigidity for portable drilling.

GNF1880-30505

List Number Drill Bit Size

Decimal Equivalent Flute Length Overall Length

Item

No.

1880

5⁄64 in 0.0781 1 in 2 in GNF1880-30505 7⁄64 in 0.1094 1 in 2 3⁄8 in GNF1880-30507 1⁄8 in 0.125 1 7⁄16 in 2 1⁄2 in GNF1880-30508 5⁄32 in 0.1563 1 11⁄16 in 2 3⁄4 in GNF1880-30510 3⁄16 in 0.1875 1 7⁄8 in 3 in GNF1880-30512 7⁄32 in 0.2188 2 in 3 1⁄4 in GNF1880-30514 1⁄4 in 0.25 2 in 3 1⁄2 in GNF1880-30516 9⁄32 in 0.2813 2 1⁄4 in 3 3⁄4 in GNF1880-30518 19⁄64 in 0.2969 2 3⁄8 in 3 7⁄8 in GNF1880-30519 5⁄16 in 0.3125 2 1⁄2 in 4 in GNF1880-30520 11⁄32 in 0.3438 2 5⁄8 in 4 1⁄8 in GNF1880-30522 3⁄8 in 0.375 2 11⁄16 in 4 1⁄4 in GNF1880-30524 13⁄32 in 0.4063 2 13⁄16 in 4 3⁄8 in GNF1880-30526 7⁄16 in 0.4375 2 15⁄16 in 4 1⁄2 in GNF1880-30528 15⁄32 in 0.4688 3 1⁄8 in 4 3⁄4 in GNF1880-30530 1⁄2 in 0.5 3 3⁄8 in 5 in GNF1880-30532

CLE-LINE

1⁄2" Reduced Shank Drills (Silver & Deming)

▪High-speed steel, 118° point, black oxide finish ▪Shank reduced to fit 1⁄2" drill chucks ▪Three flats on shank for use with 3-jaw chucks ▪Standard 6" overall length, 3 1⁄8" flute length GNF1892-20676

Size (in.) Flute Length (in.) Length (in.)

Item

No. 1⁄2 3 1⁄8 6 GNF1892-20670 33⁄64 3 1⁄8 6 GNF1892-20671 17⁄32 3 1⁄8 6 GNF1892-20672 35⁄64 3 1⁄8 6 GNF1892-20673 9⁄16 3 1⁄8 6 GNF1892-20674 37⁄64 3 1⁄8 6 GNF1892-20675 19⁄32 3 1⁄8 6 GNF1892-20676 39⁄64 3 1⁄8 6 GNF1892-20677 5⁄8 3 1⁄8 6 GNF1892-20678 41⁄64 3 1⁄8 6 GNF1892-20679 21⁄32 3 1⁄8 6 GNF1892-20680 43⁄64 3 1⁄8 6 GNF1892-20681 11⁄16 3 1⁄8 6 GNF1892-20682 45⁄64 3 1⁄8 6 GNF1892-20683 23⁄32 3 1⁄8 6 GNF1892-20684

Size (in.) Flute Length (in.) Length (in.)

Item

No. 47⁄64 3 1⁄8 6 GNF1892-20685 3⁄4 3 1⁄8 6 GNF1892-20686 49⁄64 3 1⁄8 6 GNF1892-20687 25⁄32 3 1⁄8 6 GNF1892-20688 13⁄16 3 1⁄8 6 GNF1892-20689 27⁄32 3 1⁄8 6 GNF1892-20690 7⁄8 3 1⁄8 6 GNF1892-20691 29⁄32 3 1⁄8 6 GNF1892-20692 15⁄16 3 1⁄8 6 GNF1892-20693 31⁄32 3 1⁄8 6 GNF1892-20694 1 3 1⁄8 6 GNF1892-20695 1 1⁄16 3 1⁄8 6 GNF1892-20696 1 1⁄8 3 1⁄8 6 GNF1892-20697 1 3⁄16 3 1⁄8 6 GNF1892-20698 1 1⁄4 3 1⁄8 6 GNF1892-20699

CLE-LINE

Production Grade Screw Machine Length Slow Spiral Carbide Drill Bits

▪118° 4-facet point ▪Uncoated Manufactured from solid submicron grain carbide with exacting tolerances. Stub lengths allow rigid setups, which minimizes deflection. Slow spiral drills provide a curled chip with excellent chip flow and removal. 4-facet point helps eliminate walking and requires less force.

GNF759-78704

List Number Drill Bit Size

Decimal Equivalent Flute Length Overall Length

Item

No.

759

1⁄8 in 0.125 5⁄8 in 2 in GNF759-

78704

3⁄16 in 0.1875 3⁄4 in 2 3⁄16 in GNF759-

78708

1⁄4 in 0.25 10 in 2 1⁄2 in GNF759-

78712

5⁄16 in 0.3125 1 1⁄4 in 2 1⁄2 in GNF759-

78716

3⁄8 in 0.375 1 1⁄4 in 2 3⁄4 in GNF759-

78720

1⁄2 in 0.5 1 1⁄4 in 3 in GNF759-

78728

CHICAGO-LATROBE