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OSG Spiral Flute Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: 5/16"-18 UNC, H5 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/16"-18 UNC) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 3 flutes (MPN 1650502008). 3G Electric interprets…

SKU 3G-OTH-218700

Brand
OSG
Item
Spiral Flute Tap: 5/16"-18 UNC, H5 / 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
1650502008
Type
H5 / 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 (5/16"-18 UNC) is a spiral-flute tap for steel and stainless steel, featuring an H5 / 2B-3B tolerance with a modified bottoming chamfer and 3 flutes (MPN 1650502008). 3G Electric interprets this demand and sources the genuine OSG product, supporting your threading operations across 14 industrial departments.

Frequently Asked Questions

What is the OSG spiral flute tap 5/16"-18 UNC 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 where thread quality and tool life are critical.

What are the specifications of the OSG 5/16"-18 UNC spiral flute tap?

The OSG spiral flute tap has a 5/16"-18 UNC thread size, H5 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 1650502008. It is engineered for threading blind holes in steel and stainless steel, providing reliable chip evacuation and consistent thread formation.

Where to buy OSG spiral flute taps in worldwide?

3G Electric supplies OSG spiral flute taps worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the OSG 5/16"-18 UNC tap (MPN 1650502008) and other threading tools across 14 industrial departments.

How to select the right spiral flute tap for steel?

For threading blind holes in steel, choose a spiral flute tap with a modified bottoming chamfer, like this OSG 5/16"-18 UNC tap. Ensure the tap's tolerance (H5 / 2B-3B) matches your thread class requirement. Use proper cutting fluid and rigid tapping equipment to maximize tool life and thread quality.

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: 1/4"-20 UNC, H5 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1650501608)
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OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1650501608)
OSG Spiral Flute Tap: 3/8"-16 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650502408)
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OSG Spiral Flute Tap: 3/8"-16 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650502408)
OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650502108)
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OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650502108)
OSG Spiral Flute Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650502808)
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OSG Spiral Flute Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650502808)
OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503008)
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OSG Spiral Flute Tap: 7/16"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503008)
OSG Spiral Flute Tap: 9/16"-18 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503808)
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OSG Spiral Flute Tap: 9/16"-18 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1650503808)

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