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OSG Spiral Point Tap: 5/16"-24 UNF, 2B+, 2 Flute, Plug Chamfer - Oversized Spiral-Point Taps
OSGOversized Spiral-Point Taps

OSG Spiral Point Tap: 5/16"-24 UNF, 2B+, 2 Flute, Plug Chamfer

The OSG Spiral Point Tap (5/16"-24 UNF, MPN 1591208) is an oversized spiral-point tap with a 2B+ thread class, plug chamfer, and TiCN-coated high-speed steel construction. It features 2 flutes and is designed for…

SKU 3G-OTH-251200

Brand
OSG
Item
Spiral Point Tap: 5/16"-24 UNF, 2B+, 2 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

OSG
Manufacturer Part Number
1591208
Type
2B+, Plug Chamfer, TiCN Coated High Speed Steel
Flute
2

Technical Documents

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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Point Tap (5/16"-24 UNF, MPN 1591208) is an oversized spiral-point tap with a 2B+ thread class, plug chamfer, and TiCN-coated high-speed steel construction. It features 2 flutes and is designed for through-hole tapping in industrial applications.

Frequently Asked Questions

What is the OSG 1591208 spiral point tap used for?

The OSG 1591208 is a 5/16"-24 UNF spiral point tap designed for through-hole threading in steel and other materials. Its TiCN coating reduces friction and extends tool life, making it suitable for high-speed production environments where chip evacuation is critical.

What are the specifications of the OSG 1591208 tap?

This OSG tap has a 5/16"-24 UNF thread size, 2B+ tolerance class, 2 flutes, and a plug chamfer. It is made from TiCN coated high speed steel. The manufacturer part number is 1591208, and it is classified as an oversized spiral-point tap for precise thread fit.

Where to buy the OSG 1591208 tap worldwide?

3G Electric supplies the OSG 1591208 tap worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we source and deliver this item to any country.

How to select the correct OSG spiral point tap for UNF threads?

Select an OSG spiral point tap by matching thread size (e.g., 5/16"-24 UNF), tolerance class (2B+ for oversized fit), and chamfer type (plug for through-holes). TiCN coating is ideal for abrasive materials. Always verify the tap's flute count and coating against your workpiece hardness.

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 oversized spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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