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OSG Spiral Point Tap: 3/8"-24 UNF, H1 / 2B-3B, 3 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 3/8"-24 UNF, H1 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Spiral Point Tap (3/8"-24 UNF) is a general-purpose spiral-point tap with a TiCN-coated high-speed steel construction, featuring a plug chamfer and 3-flute design. It is specified as H1 / 2B-3B (MPN 1221808)…

SKU 3G-OTH-216163

Brand
OSG
Item
Spiral Point Tap: 3/8"-24 UNF, H1 / 2B-3B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
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Technical Specifications

OSG
Manufacturer Part Number
1221808
Type
H1 / 2B-3B, Plug Chamfer, TiCN Coated High Speed Steel
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Point Tap (3/8"-24 UNF) is a general-purpose spiral-point tap with a TiCN-coated high-speed steel construction, featuring a plug chamfer and 3-flute design. It is specified as H1 / 2B-3B (MPN 1221808), delivering a reliable threading solution for industrial applications.

Frequently Asked Questions

What is the OSG spiral point tap 3/8-24 UNF used for?

This OSG spiral point tap is designed for threading blind or through holes in ferrous and non-ferrous materials. Its TiCN coating and plug chamfer make it suitable for general-purpose tapping in production environments, delivering efficient chip evacuation and extended tool life.

What are the specifications of the OSG 1221808 tap?

The OSG 1221808 is a 3/8-24 UNF spiral point tap with H1 / 2B-3B tolerance, 3 flutes, plug chamfer, and TiCN coated high speed steel. It is designed for general-purpose threading and is manufactured under part number 1221808.

Where to buy OSG taps in worldwide?

You can source OSG taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 1221808 spiral point tap.

How to select the right OSG tap for threading?

Select an OSG tap based on thread size, pitch, material, and hole type. For through holes, a spiral point tap like the 3/8-24 UNF with plug chamfer works well. Ensure the tap tolerance (H1 / 2B-3B) matches your required thread class. Always use proper cutting fluid 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 general purpose 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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