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OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 1/2"-20 UNF, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (1/2"-20 UNF, MPN 1733505) is a 3-flute tap with a modified bottoming chamfer and H3 / 2B-3B tolerance class, designed for threading steel and stainless steel. 3G Electric interprets demand…

SKU 3G-OTH-218886

Brand
OSG
Item
Spiral Flute Tap: 1/2"-20 UNF, H3 / 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
1733505
Type
H3 / 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 (1/2"-20 UNF, MPN 1733505) is a 3-flute tap with a modified bottoming chamfer and H3 / 2B-3B tolerance class, designed for threading steel and stainless steel. 3G Electric interprets demand and sources this genuine industrial 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 1/2"-20 UNF 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 requiring precise UNF threads.

What are the specifications of the OSG spiral flute tap MPN 1733505?

The OSG spiral flute tap MPN 1733505 has a 1/2"-20 UNF thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. It is classified as a spiral-flute tap for steel and stainless steel, with part number 1733505 and SKU 1733505.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, including the spiral flute tap MPN 1733505. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this and other OSG threading tools.

How to select the correct OSG tap for stainless steel?

For stainless steel, choose a spiral flute tap like the OSG 1/2"-20 UNF (MPN 1733505) with a modified bottoming chamfer. This design reduces torque and improves chip evacuation in blind holes. Ensure the tap tolerance (H3 / 2B-3B) matches your thread class requirement for optimal fit.

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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Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Flute Tap: 1/2"-20 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762401)
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OSG Spiral Flute Tap: 1/2"-20 UNF, H6 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1762401)
Spiral-flute tap with 3 flutes and modified bottoming chamfer, tolerance H3 / 2B-3B. Designed for threading blind holes in steel and stainless steel, the spiral flute evacuates chips upward to prevent clogging. Suitable for automotive, aerospace, and general manufacturing applications
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Spiral-flute tap with 3 flutes and modified bottoming chamfer, tolerance H3 / 2B-3B. Designed for threading blind holes in steel and stainless steel, the spiral flute evacuates chips upward to prevent clogging. Suitable for automotive, aerospace, and general manufacturing applications
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749905)
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OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749905)
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)
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer and 3 flutes to lift chips upward, preventing clogging in deep holes. Tolerance class H3 / 2B-3B. Thread size 9/16"-12 UNC
OSG
Spiral-flute tap for threading blind holes in steel and stainless steel. Features a modified bottoming chamfer and 3 flutes to lift chips upward, preventing clogging in deep holes. Tolerance class H3 / 2B-3B. Thread size 9/16"-12 UNC
OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1733405)
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OSG Spiral Flute Tap: 1/2"-13 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1733405)

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