Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

OSG 5/16"-24 UNF General Purpose Spiral-Flute Tap - General Purpose Spiral-Flute Taps
OSGGeneral Purpose Spiral-Flute Taps

OSG 5/16"-24 UNF General Purpose Spiral-Flute Tap

The OSG Spiral Flute Tap (5/16"-24 UNF, MPN 2985901) is a general-purpose tap with a 2B thread class, bottoming chamfer, 3 flutes, and black oxide high-speed steel construction. 3G Electric interprets your demand for…

SKU 3G-OTH-230286

Brand
OSG
Item
5/16"-24 UNF General Purpose Spiral-Flute Tap
Category
General Purpose Spiral-Flute Taps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
2985901
Type
2B, Bottoming Chamfer, Black Oxide High Speed Steel
Flute
3

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The OSG Spiral Flute Tap (5/16"-24 UNF, MPN 2985901) is a general-purpose tap with a 2B thread class, bottoming chamfer, 3 flutes, and black oxide high-speed steel construction. 3G Electric interprets your demand for this precision threading tool, sourcing it from our extensive industrial supply network across 14 departments, with specialist expertise in cutting tools and controls.

Frequently Asked Questions

What is the OSG spiral flute tap 2985901 used for?

The OSG spiral flute tap 2985901 is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design pulls chips upward, preventing clogging and ensuring clean threads. It is ideal for general-purpose tapping in manufacturing and maintenance applications.

What are the specifications of the OSG spiral flute tap 2985901?

The OSG spiral flute tap 2985901 has a thread size of 5/16"-24 UNF, a 2B class of fit, 3 flutes, a bottoming chamfer, and is made from black oxide high-speed steel. It is designed for general-purpose tapping of blind holes in ferrous and non-ferrous materials.

Where to buy the OSG spiral flute tap 2985901 worldwide?

You can source the OSG spiral flute tap 2985901 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this OSG tap.

How to select the correct OSG spiral flute tap for blind holes?

To select the correct OSG spiral flute tap for blind holes, match the thread size (e.g., 5/16"-24 UNF), class of fit (2B), and chamfer type (bottoming) to your application. Ensure the tap material (black oxide HSS) suits the workpiece. OSG taps are designed for efficient chip evacuation in blind-hole threading.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
OSG Spiral Flute Tap: 7/16"-20 UNF, 2B, 3 Flute, Bottoming Chamfer, Black Oxide High Speed Steel (MPN 2987001)
OSG
OSG Spiral Flute Tap: 7/16"-20 UNF, 2B, 3 Flute, Bottoming Chamfer, Black Oxide High Speed Steel (MPN 2987001)
OSG Spiral Flute Tap: 5/16"-24 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985905)
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985905)
OSG Spiral Flute Tap: #8-36 UNF, 2B, 3 Flute, Bottoming Chamfer, Black Oxide High Speed Steel (MPN 2986701)
OSG
OSG Spiral Flute Tap: #8-36 UNF, 2B, 3 Flute, Bottoming Chamfer, Black Oxide High Speed Steel (MPN 2986701)
OSG Spiral Flute Tap: 3/8"-24 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2986105)
OSG
OSG Spiral Flute Tap: 3/8"-24 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2986105)
OSG Spiral Flute Tap: 1/4"-28 UNF, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2985700)
OSG
OSG Spiral Flute Tap: 1/4"-28 UNF, 2B, 3 Flute, Bottoming Chamfer, High Speed Steel (MPN 2985700)
OSG Spiral Flute Tap: 1/4"-28 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985705)
OSG
OSG Spiral Flute Tap: 1/4"-28 UNF, 2B, 3 Flute, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2985705)

More from OSG

View all OSG parts
Metric spiral-flute tap with M14x2 thread, D7 / 4H-6H tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in ferrous and non-ferrous materials, with spiral flutes that evacuate chips upward to prevent clogging. Suitable for general-purpose tapping applications
OSG
Metric spiral-flute tap with M14x2 thread, D7 / 4H-6H tolerance, 3 flutes, and modified bottoming chamfer. Designed for threading blind holes in ferrous and non-ferrous materials, with spiral flutes that evacuate chips upward to prevent clogging. Suitable for general-purpose tapping applications
General purpose spiral-flute tap for threading blind holes. Features a bottoming chamfer for threading to the bottom of a hole, TiN-coated high-speed steel construction, and 3 flutes for chip evacuation. Thread size #10-24 UNC, class 2B fit
OSG
General purpose spiral-flute tap for threading blind holes. Features a bottoming chamfer for threading to the bottom of a hole, TiN-coated high-speed steel construction, and 3 flutes for chip evacuation. Thread size #10-24 UNC, class 2B fit
General purpose spiral-flute tap for threading blind holes. M10x1 metric thread, D5 / 4H-6H tolerance class, 3 flutes, modified bottoming chamfer. Designed for chip evacuation in steel and cast iron
OSG
General purpose spiral-flute tap for threading blind holes. M10x1 metric thread, D5 / 4H-6H tolerance class, 3 flutes, modified bottoming chamfer. Designed for chip evacuation in steel and cast iron
This spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry lifts chips upward, preventing clogging and ensuring clean threads. It features a #10-24 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer, making it suitable for general manufacturing applications requiring precise internal threading
OSG
This spiral-flute tap is designed for threading blind holes in materials such as steel and aluminum. The spiral flute geometry lifts chips upward, preventing clogging and ensuring clean threads. It features a #10-24 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer, making it suitable for general manufacturing applications requiring precise internal threading
General purpose spiral-flute tap for threading blind holes. Features H3 / 2B-3B tolerance, 3 flutes, and modified bottoming chamfer. Spiral flute design evacuates chips upward to prevent clogging. Suitable for steel and aluminum in general manufacturing applications
OSG
General purpose spiral-flute tap for threading blind holes. Features H3 / 2B-3B tolerance, 3 flutes, and modified bottoming chamfer. Spiral flute design evacuates chips upward to prevent clogging. Suitable for steel and aluminum in general manufacturing applications
High-speed steel spiral-flute tap with 1/4"-28 UNF thread, H3 / 2B-3B tolerance, and bottoming chamfer. Three flutes lift chips upward, making it suitable for threading blind holes in steel and aluminum. Used in general machining applications requiring precision threads
OSG
High-speed steel spiral-flute tap with 1/4"-28 UNF thread, H3 / 2B-3B tolerance, and bottoming chamfer. Three flutes lift chips upward, making it suitable for threading blind holes in steel and aluminum. Used in general machining applications requiring precision threads
General purpose spiral-flute tap for threading blind holes in steel and aluminum. Features TiN-coated high-speed steel construction, H3 / 2B-3B tolerance, 3-flute design, and plug chamfer. Spiral flute pushes chips forward to prevent clogging. Suitable for automotive, aerospace, and general manufacturing applications
OSG
General purpose spiral-flute tap for threading blind holes in steel and aluminum. Features TiN-coated high-speed steel construction, H3 / 2B-3B tolerance, 3-flute design, and plug chamfer. Spiral flute pushes chips forward to prevent clogging. Suitable for automotive, aerospace, and general manufacturing applications
General purpose spiral-flute tap for threading blind holes. Thread size #8-32 UNC, 2B class of fit, 3 flutes, modified bottoming chamfer. Spiral flute design evacuates chips upward, preventing clogging in deep or blind-hole applications. Suitable for steel, stainless steel, and aluminum
OSG
General purpose spiral-flute tap for threading blind holes. Thread size #8-32 UNC, 2B class of fit, 3 flutes, modified bottoming chamfer. Spiral flute design evacuates chips upward, preventing clogging in deep or blind-hole applications. Suitable for steel, stainless steel, and aluminum