OSG Spiral Flute Tap: 7/8"-14 UNF, H4 / 2B-3B, 4 Flute
The OSG Spiral Flute Tap (7/8"-14 UNF, MPN 2939201) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 4 flutes, and an H4 / 2B-3B tolerance class. 3G Electric interprets demand and sources this…
SKU 3G-OTH-230203
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
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Product Description
The OSG Spiral Flute Tap (7/8"-14 UNF, MPN 2939201) is a general-purpose spiral-flute tap with a modified bottoming chamfer, 4 flutes, and an H4 / 2B-3B tolerance class. 3G Electric interprets demand and sources this genuine industrial tap across 14 departments, with specialist depth in cutting tools as an authorised distributor.
Frequently Asked Questions
What is an OSG spiral flute tap used for?
An OSG spiral flute tap is used for threading blind holes in materials such as steel, stainless steel, and aluminum. The spiral flute design pulls chips upward and out of the hole, preventing chip clogging and ensuring clean threads. This 7/8"-14 UNF tap with modified bottoming chamfer is ideal for threading close to the bottom of a blind hole.
What are the specifications of the OSG 2939201 tap?
The OSG 2939201 is a general purpose spiral flute tap with size 7/8"-14 UNF, H4 / 2B-3B tolerance, 4 flutes, and a modified bottoming chamfer. It is designed for threading blind holes in ferrous and non-ferrous materials. The H4 tolerance allows for adjustment to achieve 2B or 3B class fit.
Where to buy OSG taps in worldwide?
3G Electric supplies and delivers OSG taps, including the 2939201 spiral flute tap, to customers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance for international orders. Contact us for pricing and lead time on this and other OSG threading tools.
How to select the right spiral flute tap for blind holes?
Select a spiral flute tap with a modified bottoming chamfer when you need threads close to the bottom of a blind hole. Choose flute count based on material: 4 flutes for general purpose use. Ensure the tap tolerance (e.g., H4 / 2B-3B) matches your required thread class. OSG taps are a reliable choice for consistent thread quality.
Used in
Common applications for OSGOSG 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.
