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OSG Spiral Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (7/8"-9 UNC, MPN 1650504908) is a 4-flute, modified-bottoming-chamfer tap with H4 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for…

SKU 3G-OTH-217915

Brand
OSG
Item
Spiral Flute Tap: 7/8"-9 UNC, H4 / 2B-3B, 4 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650504908
Type
H4 / 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 (7/8"-9 UNC, MPN 1650504908) is a 4-flute, modified-bottoming-chamfer tap with H4 / 2B-3B tolerance, designed for threading steel and stainless steel. 3G Electric interprets your demand for this OEM-specified tool, sourcing it across our 14 industrial departments — with specialist depth in combustion, pumps, and controls as an authorised distributor — to deliver the right solution, not just a catalog.

Frequently Asked Questions

What is the OSG spiral flute tap 7/8"-9 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging, making it ideal for automotive, aerospace, and general manufacturing applications requiring precise internal threads.

What are the specifications of the OSG spiral flute tap 7/8"-9 UNC?

The OSG spiral flute tap has a 7/8"-9 UNC thread size, H4 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. It is designed for threading blind holes in steel and stainless steel. The manufacturer part number is 1650504908.

Where to buy OSG spiral flute taps worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this OSG tap.

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

Select an OSG spiral flute tap based on thread size, pitch, and material. For steel and stainless steel blind holes, use a tap with H4 / 2B-3B tolerance and modified bottoming chamfer. Ensure the tap matches your hole depth and machine capability for optimal thread quality.

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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