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OSG Spiral Flute Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (7/8"-14 UNF) is a 4-flute tap with a Modified Bottoming Chamfer, designed for threading steel and stainless steel. It features an H6 / 2B-3B tolerance class (MPN 1645078146). 3G Electric…

SKU 3G-OTH-217919

Brand
OSG
Item
Spiral Flute Tap: 7/8"-14 UNF, H6 / 2B-3B, 4 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645078146
Type
H6 / 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"-14 UNF) is a 4-flute tap with a Modified Bottoming Chamfer, designed for threading steel and stainless steel. It features an H6 / 2B-3B tolerance class (MPN 1645078146). 3G Electric sources this genuine OSG tool as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps, and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 7/8"-14 UNF used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging. It is commonly used in automotive, aerospace, and general manufacturing applications requiring precise UNF threads.

What are the specifications of the OSG spiral flute tap 7/8"-14 UNF?

The OSG spiral flute tap has a thread size of 7/8"-14 UNF, with a tolerance of H6 / 2B-3B. It features 4 flutes and a modified bottoming chamfer. The manufacturer part number is 1645078146. This tap is suitable for threading steel and stainless steel.

Where to buy the OSG spiral flute tap 7/8"-14 UNF worldwide?

You can source the OSG spiral flute tap 7/8"-14 UNF 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.

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, use a tap with H6 / 2B-3B tolerance and modified bottoming chamfer for blind holes. Ensure the tap matches your hole depth and machine capability. OSG taps are engineered for precision threading.

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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