OSGSpiral-Flute Extension Taps
OSG Extension Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Bottoming Chamfer
The OSG Extension Tap (#4-40 UNC, MPN 1296100) is a spiral-flute extension tap with a bottoming chamfer, made from high-speed steel. It features a 2-flute design and is rated H2 / 2B-3B for thread class compatibility.
SKU 3G-OTH-310981
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore
Product Description
The OSG Extension Tap (#4-40 UNC, MPN 1296100) is a spiral-flute extension tap with a bottoming chamfer, made from high-speed steel. It features a 2-flute design and is rated H2 / 2B-3B for thread class compatibility.
Used in
Common applications for OSGAutomotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts
OSG Products
3G Electric supplies OSG spiral-flute extension taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
