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OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/16"-24 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 3-flute design, and modified bottoming chamfer (MPN 1650502208). 3G Electric interprets…

SKU 3G-OTH-219140

Brand
OSG
Item
Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1650502208
Type
H4 / 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"-24 UNF) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance, 3-flute design, and modified bottoming chamfer (MPN 1650502208). 3G Electric interprets demand and sources this genuine industrial cutting tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16-24 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 5/16-24 UNF spiral flute tap?

This tap has a 5/16-24 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The OSG part number is 1650502208. It is designed for threading blind holes in steel and stainless steel materials.

Where to buy OSG spiral flute taps worldwide?

3G Electric supplies OSG spiral flute taps worldwide. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. As a global industrial distributor, we source and deliver genuine OSG tooling to support your production needs.

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. The H4 / 2B-3B tolerance ensures proper fit. Ensure the tap matches your thread size (5/16-24 UNF) and material hardness. Use appropriate cutting fluid and speed for best results.

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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