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OSG Spiral Flute Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (3/8"-24 UNF, MPN 1704408) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance and a modified bottoming chamfer with 3 flutes. 3G Electric interprets demand…

SKU 3G-OTH-217847

Brand
OSG
Item
Spiral Flute Tap: 3/8"-24 UNF, H4 / 2B-3B, 3 Flute
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
1704408
Type
H4 / 2B-3B, Modified Bottoming Chamfer
Flute
3

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (3/8"-24 UNF, MPN 1704408) is a spiral-flute tap for steel and stainless steel, featuring an H4 / 2B-3B tolerance and a modified bottoming chamfer with 3 flutes. 3G Electric interprets demand and delivers this genuine industrial cutting tool across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.

Frequently Asked Questions

What is the OSG spiral flute tap 1704408 used for?

The OSG spiral flute tap 1704408 is designed for threading blind holes in steel and stainless steel. Its spiral flute design lifts chips upward, preventing clogging, while the modified bottoming chamfer allows threading close to the hole bottom. It is commonly used in automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG 3/8-24 UNF spiral flute tap?

This OSG tap has a 3/8-24 UNF thread size, H4 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The H4 tolerance ensures precise fit for class 2B or 3B nuts. The spiral flute design is optimized for steel and stainless steel. The manufacturer part number is 1704408.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time on the OSG spiral flute tap 1704408. We source and deliver genuine OSG tooling to support your production needs.

How to select the correct OSG tap for stainless steel?

For stainless steel, choose a spiral flute tap with a modified bottoming chamfer, like the OSG 1704408, to clear chips from blind holes. Ensure the tap tolerance (e.g., H4) matches your required thread class (2B or 3B). Use appropriate cutting fluid and rigid tapping equipment to extend tool life and achieve clean threads.

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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Cross-referenced by specification & description
OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704008)
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OSG Spiral Flute Tap: 3/8"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704608)
OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704208)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1704208)
OSG Spiral Flute Tap: 1/4"-28 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1703808)
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OSG Spiral Flute Tap: 1/4"-28 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1703808)
OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1732905)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1732905)
OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1645056244)
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OSG Spiral Flute Tap: 5/16"-24 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1645056244)

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