OSG Extension Tap: M5x0.8 Metric, D4 / 4H-6H, 2 Flute, Plug Chamfer
The OSG Extension Tap (M5x0.8 Metric, MPN 1111800501) is a spiral-point extension tap with a D4 / 4H-6H tolerance, 2-flute design, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets…
SKU 3G-OTH-313548
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Product Description
The OSG Extension Tap (M5x0.8 Metric, MPN 1111800501) is a spiral-point extension tap with a D4 / 4H-6H tolerance, 2-flute design, plug chamfer, and black oxide high-speed steel construction. 3G Electric interprets this demand and sources the genuine OSG product, supporting procurement across 14 industrial departments with specialist depth in combustion, pumps, and controls.
Frequently Asked Questions
What is the OSG Extension Tap M5x0.8 used for?
The OSG Extension Tap M5x0.8 is used for threading blind or deep holes in metal parts where a standard tap cannot reach. Its extended length allows access to recessed areas in automotive, aerospace, and general machining applications. The 2-flute spiral-point design pushes chips forward, reducing clogging.
What are the specifications of the OSG Extension Tap M5x0.8?
This OSG extension tap has a metric M5x0.8 thread size, a D4 / 4H-6H tolerance class, 2 flutes, a plug chamfer, and is made from black oxide high-speed steel. The manufacturer part number is 1111800501. It is designed for through-hole or blind-hole threading in steel and non-ferrous materials.
Where to buy the OSG Extension Tap M5x0.8 worldwide?
You can source the OSG Extension Tap M5x0.8 (MPN 1111800501) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we supply genuine OSG tooling for international procurement.
How to select the correct OSG extension tap for deep hole threading?
To select the correct OSG extension tap, match the thread size (M5x0.8) and tolerance class (D4 / 4H-6H) to your workpiece material and hole depth. Ensure the tap's reach exceeds the hole depth. For blind holes, use a plug chamfer; for through holes, a bottoming chamfer may be preferred. Consult OSG's technical data for material-specific speeds.
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3G Electric supplies OSG spiral-point extension taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















