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OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/8"-18 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3-flute design, and modified bottoming chamfer (MPN 1645058183). 3G Electric interprets…

SKU 3G-OTH-219014

Brand
OSG
Item
Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645058183
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (5/8"-18 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3-flute design, and modified bottoming chamfer (MPN 1645058183). 3G Electric interprets your demand for this OEM-specified tool, sourcing it across our 14 industrial departments with specialist depth in cutting tools and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 5/8"-18 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 1645058183 tap?

The OSG tap has a thread size of 5/8"-18 UNF, with a H3 / 2B-3B tolerance class. It features 3 flutes and a modified bottoming chamfer, allowing threading close to the bottom of blind holes. The manufacturer part number is 1645058183.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 1645058183 spiral flute tap.

How to select the correct OSG tap for stainless steel?

For stainless steel, choose a spiral flute tap with a modified bottoming chamfer, like this OSG model, to manage chip evacuation. Ensure the thread class (H3 / 2B-3B) matches your hole tolerance. Use appropriate cutting fluid and reduce speed to prevent work hardening.

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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