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
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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.
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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.















