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OSG Spiral Flute Tap: 1 1/4"-8 8UN, H9 / 2B-3B, 4 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1 1/4"-8 8UN, H9 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (1 1/4"-8 8UN) is a spiral-flute tap for steel and stainless steel, featuring an H9 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 1650507508). 3G Electric interprets…

SKU 3G-OTH-218770

Brand
OSG
Item
Spiral Flute Tap: 1 1/4"-8 8UN, H9 / 2B-3B, 4 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650507508
Type
H9 / 2B-3B, Modified Bottoming Chamfer
Flute
4
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (1 1/4"-8 8UN) is a spiral-flute tap for steel and stainless steel, featuring an H9 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 1650507508). 3G Electric interprets demand and sources this genuine OSG tap across 14 industrial departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is the OSG Spiral Flute Tap 1 1/4"-8 8UN used for?

This OSG spiral flute tap is designed for threading steel and stainless steel. Its modified bottoming chamfer and 4-flute geometry efficiently evacuate chips, making it suitable for through-hole and blind-hole applications in industrial manufacturing and maintenance.

What are the specifications of the OSG Spiral Flute Tap 1 1/4"-8 8UN?

The tap has a thread size of 1 1/4"-8 8UN, with a tolerance class of H9 / 2B-3B. It features 4 flutes and a modified bottoming chamfer. The manufacturer part number is 1650507508, and the SKU is 54MG11.

Where to buy the OSG Spiral Flute Tap 1 1/4"-8 8UN worldwide?

3G Electric supplies this OSG spiral flute tap worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct OSG spiral flute tap for steel?

For steel and stainless steel, choose a spiral flute tap with a modified bottoming chamfer like this OSG model. Ensure the thread size (1 1/4"-8 8UN) and tolerance (H9 / 2B-3B) match your application. Consult OSG's technical data for material-specific recommendations.

Used in

Common applications for OSG
Automotive 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 taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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