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OSG Spiral Flute Tap: 7/8"-14 UNF, 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"-14 UNF, H4 / 2B-3B, 4 Flute

The OSG Spiral Flute Tap (7/8"-14 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 1645078144). 3G Electric interprets your…

SKU 3G-OTH-217918

Brand
OSG
Item
Spiral Flute Tap: 7/8"-14 UNF, H4 / 2B-3B, 4 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645078144
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"-14 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer (MPN 1645078144). 3G Electric interprets your demand for this OEM threading tool, sources it across 14 industrial departments, and provides specialist support to ensure you get the right solution.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

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?

This tap has a 7/8"-14 UNF thread size, H4 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. The OSG part number is 1645078144. It is designed for threading steel and stainless steel, providing accurate thread depth and finish.

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 from 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 a tap with the correct thread size, pitch, and tolerance for your application. For blind holes in steel, a spiral flute tap with a modified bottoming chamfer, like this OSG model, is ideal. Ensure the tap matches the material hardness and thread class required.

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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