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OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer - General Purpose Spiral-Point Taps
OSGGeneral Purpose Spiral-Point Taps

OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Spiral Point Tap (1/4"-20 UNC, MPN 1230205) is a general-purpose spiral-point tap with a plug chamfer, TiN-coated high-speed steel construction, and three flutes. It is specified as H3 / 2B-3B class of fit…

SKU 3G-OTH-215081

Brand
OSG
Item
Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
Category
General Purpose Spiral-Point Taps
Available to Order
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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
1230205
Type
H3 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Point Tap (1/4"-20 UNC, MPN 1230205) is a general-purpose spiral-point tap with a plug chamfer, TiN-coated high-speed steel construction, and three flutes. It is specified as H3 / 2B-3B class of fit, designed for through-hole threading in a range of materials.

Frequently Asked Questions

What is the OSG Spiral Point Tap 1/4"-20 UNC used for?

This OSG spiral point tap is designed for threading through-holes in metal, steel, and alloys. Its plug chamfer and TiN coating reduce friction and extend tool life, making it suitable for general-purpose tapping in automotive, aerospace, and industrial manufacturing applications.

What are the specifications of the OSG Spiral Point Tap 1/4"-20 UNC?

The OSG spiral point tap has a 1/4"-20 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, plug chamfer, and TiN coated high speed steel construction. The manufacturer part number is 1230205. It is designed for through-hole tapping in ferrous and non-ferrous materials.

Where to buy the OSG Spiral Point Tap 1/4"-20 UNC worldwide?

3G Electric supplies the OSG spiral point tap 1/4"-20 UNC (MPN 1230205) worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time.

How to select the correct OSG spiral point tap for through-hole threading?

Select an OSG spiral point tap with the correct thread size (e.g., 1/4"-20 UNC), tolerance class (H3 / 2B-3B), and coating (TiN) for your material. For through-holes, a plug chamfer and 3-flute design provide efficient chip evacuation. Always match the tap to the hole depth and material 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 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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Cross-referenced by specification & description
OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230005)
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OSG Spiral Point Tap: 1/4"-20 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230005)
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OSG Spiral Point Tap: 5/16"-18 UNC, H3 / 2B-3B, 2 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1230805)
OSG Spiral Point Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1231605)
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OSG Spiral Point Tap: 3/8"-16 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1231605)
OSG Spiral Point Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1226605)
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OSG Spiral Point Tap: 3/8"-16 UNC, H2 / 2B-3B, 3 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1226605)

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