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OSG 1/4-20 UNC Spiral-Flute Tap - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG 1/4-20 UNC Spiral-Flute Tap

The OSG Spiral Flute Tap (1/4"-20 UNC) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 2 flutes (MPN 1645014205). 3G Electric interprets…

SKU 3G-OTH-217809

Brand
OSG
Item
1/4-20 UNC Spiral-Flute Tap
Part Number
1645014205
Category
Spiral-Flute Taps for Steel & Stainless Steel
Available to Order
Also known as:1645014205OSG
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Technical Specifications

OSG
Manufacturer Part Number
1645014205
Type
H5 / 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 (1/4"-20 UNC) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 2 flutes (MPN 1645014205). 3G Electric interprets this demand and sources the genuine OSG product, backed by specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG spiral flute tap used for?

The OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and breakage, making it ideal for production tapping in automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG 1/4-20 UNC spiral flute tap?

This OSG tap has a 1/4-20 UNC thread size, H5 / 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 1645014205.

Where to buy OSG taps in worldwide?

3G Electric supplies and delivers OSG taps worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your order reaches any international destination. Contact us for availability and lead time on this OSG spiral flute tap.

How to select the right spiral flute tap for steel?

For steel, choose a spiral flute tap with a modified bottoming chamfer for blind holes. Ensure the thread size matches your application, like 1/4-20 UNC. The H5 tolerance class provides a precise fit for 2B-3B thread classes. OSG taps are a reliable choice for consistent performance.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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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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