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OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute

The OSG Spiral Flute Tap (#12-28 UNF, MPN 1645012283) is a spiral-flute tap for steel and stainless steel, featuring a H3 / 2B-3B tolerance, 2-flute design, and modified bottoming chamfer. 3G Electric interprets this…

SKU 3G-OTH-218008

Brand
OSG
Item
Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 2 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645012283
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
2
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (#12-28 UNF, MPN 1645012283) is a spiral-flute tap for steel and stainless steel, featuring a H3 / 2B-3B tolerance, 2-flute design, and modified bottoming chamfer. 3G Electric interprets this demand and sources genuine industrial equipment across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor for brands like OSG, Schneider, ABB, Siemens, SKF, Festo, Fluke, Interpump, and FBR.

Frequently Asked Questions

What is OSG spiral flute tap #12-28 UNF used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the bottom of the hole, making it ideal for precision tapping in industrial manufacturing and maintenance applications.

What are the specifications of OSG spiral flute tap 1645012283?

The OSG spiral flute tap has a #12-28 UNF thread size, H3 / 2B-3B tolerance, 2 flutes, and a modified bottoming chamfer. It is designed for threading blind holes in steel and stainless steel. The manufacturer part number is 1645012283, and it is classified as a spiral-flute tap for steel and stainless steel.

Where to buy OSG spiral flute tap 1645012283 worldwide?

You can source the OSG spiral flute tap 1645012283 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide reliable sourcing for this precision threading tool.

How to select the right OSG spiral flute tap for steel?

Select an OSG spiral flute tap based on thread size, tolerance class, and material. For steel and stainless steel blind holes, use a tap with a modified bottoming chamfer and H3 / 2B-3B tolerance. Ensure the tap matches the required UNF thread specification, such as #12-28 UNF, for proper thread fit and performance.

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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