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OSG Straight Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer - General Purpose Hand Taps
OSGGeneral Purpose Hand Taps

OSG Straight Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer

The OSG Straight Flute Tap (1/4"-28 UNF) is a general-purpose hand tap with a plug chamfer, TiN-coated high-speed steel construction, and H3/2B-3B tolerance. It features 4 flutes (MPN 1120405). 3G Electric interprets…

SKU 3G-OTH-221822

Brand
OSG
Item
Straight Flute Tap: 1/4"-28 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer
Category
General Purpose Hand 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
1120405
Type
H3 / 2B-3B, Plug Chamfer, TiN Coated High Speed Steel
Flute
4

Technical Documents

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

Product Description

The OSG Straight Flute Tap (1/4"-28 UNF) is a general-purpose hand tap with a plug chamfer, TiN-coated high-speed steel construction, and H3/2B-3B tolerance. It features 4 flutes (MPN 1120405). 3G Electric interprets your threading needs and sources this genuine OSG tap, backed by specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is OSG Straight Flute Tap 1/4"-28 UNF used for?

This OSG tap is used for cutting internal threads in through or blind holes. It is ideal for general-purpose threading in steel, aluminum, and other metals, delivering precise UNF threads with a TiN coating for extended tool life.

What are the specifications of OSG Straight Flute Tap 1/4"-28 UNF?

This OSG tap has a 1/4"-28 UNF thread size, H3 / 2B-3B tolerance, 4 flutes, plug chamfer, and TiN coated high speed steel. The manufacturer part number is 1120405. It is designed for general-purpose hand tapping.

Where to buy OSG Straight Flute Tap 1/4"-28 UNF worldwide?

3G Electric supplies and delivers this OSG tap worldwide. We handle full logistics and customs clearance, ensuring you receive the correct tool for your threading application. Contact us for availability and lead time.

How to select the right tap for UNF threads?

Select a tap with the correct thread size (e.g., 1/4"-28 UNF) and tolerance class (H3 for 2B-3B fit). Choose plug chamfer for through holes or bottoming for blind holes. TiN coating improves wear resistance. OSG taps are a reliable choice for precision threading.

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

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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Straight Flute Tap: 3/8"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121605)
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OSG Straight Flute Tap: 3/8"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121605)
OSG Straight Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120105)
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OSG Straight Flute Tap: 1/4"-20 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120105)
OSG Straight Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121005)
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OSG Straight Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1121005)
This general purpose hand tap is used for cutting internal UNF threads in metal. It features a plug chamfer for through or blind holes, a TiN coating to reduce friction, and H3 tolerance for class 2B/3B fit. The 4-flute design aids chip evacuation
OSG
This general purpose hand tap is used for cutting internal UNF threads in metal. It features a plug chamfer for through or blind holes, a TiN coating to reduce friction, and H3 tolerance for class 2B/3B fit. The 4-flute design aids chip evacuation
General purpose hand tap for threading internal threads in metal components. Features TiN coated high speed steel construction, H3 tolerance for 2B/3B class fit, plug chamfer, and 4 flutes. Suitable for ferrous and non-ferrous materials in manufacturing applications
OSG
General purpose hand tap for threading internal threads in metal components. Features TiN coated high speed steel construction, H3 tolerance for 2B/3B class fit, plug chamfer, and 4 flutes. Suitable for ferrous and non-ferrous materials in manufacturing applications
OSG Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120705)
OSG
OSG Straight Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 4 Flute, Plug Chamfer, TiN Coated High Speed Steel (MPN 1120705)

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