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OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1650502108) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance class, designed for threading steel and stainless steel. 3G Electric interprets your…

SKU 3G-OTH-217827

Brand
OSG
Item
Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650502108
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 (5/16"-18 UNC, MPN 1650502108) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance class, 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 cutting tools and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16"-18 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its modified bottoming chamfer and 3-flute design efficiently evacuate chips upward, making it ideal for CNC and manual tapping applications where chip clearance is critical.

What are the specifications of the OSG 5/16"-18 UNC spiral flute tap?

The tap has a 5/16"-18 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650502108. It is classified as a spiral-flute tap for steel and stainless steel, ensuring reliable thread formation in demanding materials.

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 facility. Contact us for availability and lead time on the OSG spiral flute tap 5/16"-18 UNC (MPN 1650502108) and other threading tools.

How to select the correct OSG tap for steel threading?

For steel and stainless steel blind holes, choose a spiral flute tap like this OSG model with a modified bottoming chamfer. Ensure the thread size (5/16"-18 UNC) and tolerance (H3 / 2B-3B) match your application. Use appropriate cutting fluid and machine speed per OSG recommendations 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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