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OSG Spiral Flute Tap: 1/2"-13 UNC, H5 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/2"-13 UNC, H5 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (1/2"-13 UNC) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 3 flutes (MPN 1645012135). 3G Electric interprets…

SKU 3G-OTH-217865

Brand
OSG
Item
Spiral Flute Tap: 1/2"-13 UNC, H5 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
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Technical Specifications

OSG
Manufacturer Part Number
1645012135
Type
H5 / 2B-3B, Modified Bottoming Chamfer
Flute
3
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (1/2"-13 UNC) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 3 flutes (MPN 1645012135). 3G Electric interprets your demand for this OEM threading tool, sources it across our 14 industrial departments, and provides specialist support to ensure you get the right solution.

Frequently Asked Questions

What is the OSG spiral flute tap 1/2"-13 UNC used for?

This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its modified bottoming chamfer and 3-flute design efficiently evacuate chips upward, making it ideal for automotive, aerospace, and general manufacturing applications where clean, accurate threads are required.

What are the specifications of the OSG tap MPN 1645012135?

The OSG spiral flute tap has a 1/2"-13 UNC thread size, H5 tolerance for 2B-3B class fit, 3 flutes, and a modified bottoming chamfer. It is designed for threading steel and stainless steel. The manufacturer part number is 1645012135.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps like the 1/2"-13 UNC spiral flute tap to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this and other OSG threading tools.

How to select the right OSG tap for steel?

For steel and stainless steel blind holes, choose a spiral flute tap like this OSG 1/2"-13 UNC model. The 3-flute design and modified bottoming chamfer help clear chips. Match the tap tolerance (H5) to your required thread class (2B-3B) and ensure proper cutting fluid for 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 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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