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OSG Spiral Flute Tap: 1"-12 UNF, H4 / 2B-3B, 4 Flute - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG Spiral Flute Tap: 1"-12 UNF, H4 / 2B-3B, 4 Flute

OSG General Purpose Spiral-Flute Taps.

SKU 3G-OTH-229958

Brand
OSG
Item
Spiral Flute Tap: 1"-12 UNF, H4 / 2B-3B, 4 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.
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Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
2939601

Technical Documents

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

Product Description

OSG General Purpose Spiral-Flute Taps.

Frequently Asked Questions

What is the OSG spiral flute tap used for?

The OSG spiral flute tap is used for threading blind holes in materials such as steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging and ensuring clean threads. It is commonly applied in automotive, aerospace, and general manufacturing where precise internal threading is required.

What are the specifications of the OSG spiral flute tap MPN 2939601?

The OSG spiral flute tap MPN 2939601 has a thread size of 1"-12 UNF, with a tolerance class of H4 / 2B-3B. It features 4 flutes and a modified bottoming chamfer, making it suitable for threading blind holes. This tap is designed for general-purpose use in ferrous materials.

Where to buy OSG spiral flute taps worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG spiral flute tap MPN 2939601.

How to select the correct OSG spiral flute tap for a job?

To select the correct OSG spiral flute tap, match the thread size and pitch (e.g., 1"-12 UNF) to your application. Choose a tolerance class like H4 / 2B-3B based on required fit. For blind holes, use a modified bottoming chamfer. Consider material hardness and tap coating 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: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2935401)
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OSG Spiral Flute Tap: 1/4"-28 UNF, H4 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 2935401)
OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2933401)
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OSG Spiral Flute Tap: 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2933401)
OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2933800)
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OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2933800)
OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2933801)
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OSG Spiral Flute Tap: 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2933801)
OSG Spiral Flute Tap: 7/8"-14 UNF, H4 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2939201)
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OSG Spiral Flute Tap: 7/8"-14 UNF, H4 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2939201)
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948601)
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OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 4 Flute, Modified Bottoming Chamfer (MPN 2948601)

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