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OSG Spiral Flute Tap: 5/16"-18 UNC, H7 / 2B-3B, 3 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 5/16"-18 UNC, H7 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 2941001) is a general-purpose spiral-flute tap with an H7 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. This tool is designed for threading applications…

SKU 3G-OTH-231044

Brand
OSG
Item
Spiral Flute Tap: 5/16"-18 UNC, H7 / 2B-3B, 3 Flute
Category
General Purpose Spiral-Flute Taps
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Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
2941001
Type
H7 / 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, MPN 2941001) is a general-purpose spiral-flute tap with an H7 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. This tool is designed for threading applications requiring precise fit control.

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 ferrous and non-ferrous materials. Its spiral flute design evacuates chips upward, making it ideal for general-purpose tapping in machining, automotive, and industrial maintenance applications where chip clearance is critical.

What are the specifications of the OSG 2941001 tap?

The OSG 2941001 is a 5/16-18 UNC spiral flute tap with 3 flutes, a modified bottoming chamfer, and a thread tolerance of H7 / 2B-3B. It is designed for general-purpose threading in blind holes, providing reliable chip evacuation and thread accuracy.

Where to buy OSG taps in worldwide?

3G Electric supplies OSG taps worldwide, handling full logistics and customs clearance for international orders. As a global industrial sourcing partner, we provide genuine OSG cutting tools like the 2941001 spiral flute tap, ensuring you receive the correct specifications for your threading application.

How to select the right OSG tap for blind holes?

For blind holes, choose a spiral flute tap like this OSG 5/16-18 UNC model, which pushes chips out of the hole. Ensure the chamfer type (modified bottoming) matches your thread depth requirements. Always verify thread tolerance (H7 / 2B-3B) and material compatibility for optimal performance.

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 general purpose spiral-flute taps. 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: 5/16"-18 UNC, H7 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2941000)
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OSG Spiral Flute Tap: 3/8"-16 UNC, H7 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2942108)
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OSG Spiral Flute Tap: 3/8"-16 UNC, H7 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2942108)

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