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OSG Spiral Flute Tap: 1/4"-32 UNEF, H3 / 2B-3B, 2 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/4"-32 UNEF, H3 / 2B-3B, 2 Flute

The OSG Spiral Flute Tap (1/4"-32 UNEF) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 2-flute design, and modified bottoming chamfer (MPN 1650505708). 3G Electric interprets…

SKU 3G-OTH-217820

Brand
OSG
Item
Spiral Flute Tap: 1/4"-32 UNEF, H3 / 2B-3B, 2 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
1650505708
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
2

Technical Documents

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

Product Description

The OSG Spiral Flute Tap (1/4"-32 UNEF) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 2-flute design, and modified bottoming chamfer (MPN 1650505708). 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments—and far more—with specialist depth in combustion, pumps, and controls as a trust anchor.

Frequently Asked Questions

What is an OSG spiral flute tap used for?

An OSG spiral flute tap is used for threading blind holes in steel and stainless steel. Its spiral design pulls chips upward, preventing clogging and ensuring clean threads. This 1/4"-32 UNEF tap with modified bottoming chamfer is ideal for precision threading in automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG 1/4"-32 UNEF spiral flute tap?

This OSG tap has a 1/4"-32 UNEF thread size, H3 / 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 1650505708.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine OSG cutting tools like this 1/4"-32 UNEF spiral flute tap to any location. Contact us for pricing and lead time on your order.

How to select the right OSG tap for steel?

Select an OSG tap based on thread size, material, and hole type. For blind holes in steel, use a spiral flute tap like this 1/4"-32 UNEF model with modified bottoming chamfer. Ensure the tap tolerance (H3 / 2B-3B) matches your thread class requirement. Always use proper cutting fluid for steel.

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
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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer, 2 flutes, and V coating on powdered metal construction. Tolerance class H3 / 2B-3B. Thread size 1/4"-32 UNEF
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Spiral-flute tap for threading blind holes in steel and stainless steel. Features a bottoming chamfer, 2 flutes, and V coating on powdered metal construction. Tolerance class H3 / 2B-3B. Thread size 1/4"-32 UNEF

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Spiral-flute tap with 3 flutes, H7 / 2B-3B tolerance, and modified bottoming chamfer. Designed for threading blind holes in steel and stainless steel. The spiral flute design evacuates chips upward to prevent clogging. Suitable for general manufacturing applications requiring UNF threads
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