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OSG Spiral-Flute Tap: #4-40 UNC, H6 / 2B, 2 Flute, Modified Bottoming Chamfer - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral-Flute Tap: #4-40 UNC, H6 / 2B, 2 Flute, Modified Bottoming Chamfer

OSG Spiral-Flute Taps for Steel & Stainless Steel.

SKU 3G-OTH-218851

Brand
OSG
Item
Spiral-Flute Tap: #4-40 UNC, H6 / 2B, 2 Flute, Modified Bottoming Chamfer
Category
Spiral-Flute Taps for Steel & Stainless Steel
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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
1748401

Technical Documents

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

Product Description

OSG Spiral-Flute Taps for Steel & Stainless Steel.

Frequently Asked Questions

What is the OSG spiral flute tap #4-40 UNC used for?

The OSG spiral flute tap #4-40 UNC is designed for threading blind holes in steel and stainless steel. Its spiral flute design lifts chips upward, preventing clogging in deep or blind holes. It is commonly used in automotive, aerospace, and general manufacturing applications where precise internal threads are required.

What are the specifications of the OSG spiral flute tap #4-40 UNC?

The OSG spiral flute tap has a #4-40 UNC thread size, H6 tolerance for the tap, and produces a 2B class fit in the workpiece. It features 2 flutes and a modified bottoming chamfer, allowing threading close to the bottom of blind holes. The manufacturer part number is 1748401.

Where to buy OSG spiral flute taps worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine OSG cutting tools for steel and stainless steel threading applications.

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

To select the right OSG spiral flute tap, match the thread size (e.g., #4-40 UNC) and tolerance (H6) to your workpiece requirements. For blind holes in steel or stainless steel, choose a modified bottoming chamfer and 2-flute design. OSG taps are engineered for chip evacuation; ensure your material hardness aligns with the tap's coating and geometry.

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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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a #4-40 UNC thread size, H5 tolerance, 2B class fit, 2 flutes, and a modified bottoming chamfer for threading close to the hole bottom. The spiral flute design lifts chips upward, preventing clogging in deep or blind holes
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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a #4-40 UNC thread size, H5 tolerance, 2B class fit, 2 flutes, and a modified bottoming chamfer for threading close to the hole bottom. The spiral flute design lifts chips upward, preventing clogging in deep or blind holes
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a #4-40 UNC thread size, H5 tolerance, 2B class of fit, 2 flutes, and a bottoming chamfer. The spiral flute design lifts chips upward to prevent clogging and ensure clean threads. Suitable for applications requiring precise internal threading in blind holes
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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a #4-40 UNC thread size, H5 tolerance, 2B class of fit, 2 flutes, and a bottoming chamfer. The spiral flute design lifts chips upward to prevent clogging and ensure clean threads. Suitable for applications requiring precise internal threading in blind holes
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Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging in deep or blind holes. Modified bottoming chamfer allows threading close to the hole bottom. Tolerance class H3 / 2B-3B, 2 flutes
Spiral-flute tap for threading blind holes in steel and stainless steel. #4-40 UNC thread size, H2 tolerance for class 2B-3B fit. 2-flute design with modified bottoming chamfer evacuates chips upward to prevent clogging in deep-hole applications
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Spiral-flute tap for threading blind holes in steel and stainless steel. #4-40 UNC thread size, H2 tolerance for class 2B-3B fit. 2-flute design with modified bottoming chamfer evacuates chips upward to prevent clogging in deep-hole applications
Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging and enabling clean threads in deep or blind applications. Modified bottoming chamfer allows threading close to the hole bottom. Tolerance class H4 ensures precise thread fit for 2B-3B class threads
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Spiral-flute tap for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward, preventing clogging and enabling clean threads in deep or blind applications. Modified bottoming chamfer allows threading close to the hole bottom. Tolerance class H4 ensures precise thread fit for 2B-3B class threads
OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763901)
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OSG Spiral Flute Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1763901)

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