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

OSG Thread Forming Tap: #4-40 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864800) - General Purpose Thread-Forming Taps
OSGGeneral Purpose Thread-Forming Taps

OSG Thread Forming Tap: #4-40 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864800)

OSG General Purpose Thread-Forming Taps.

SKU 3G-OTH-238324

Brand
OSG
Item
Thread Forming Tap: #4-40 UNC, 2B, Bottoming Chamfer, High Speed Steel
Category
General Purpose Thread-Forming 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
2864800

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

OSG General Purpose Thread-Forming Taps.

Frequently Asked Questions

What is the OSG Thread Forming Tap #4-40 UNC used for?

The OSG Thread Forming Tap #4-40 UNC is used to create internal threads in metal or plastic workpieces without cutting material. It is ideal for applications requiring strong, burr-free threads in automotive, aerospace, and general manufacturing. The bottoming chamfer allows threading close to the bottom of blind holes.

What are the specifications of the OSG Thread Forming Tap #4-40 UNC?

The OSG Thread Forming Tap has a #4-40 UNC thread size, 2B class of fit, and a bottoming chamfer. It is made from high-speed steel (HSS) for durability. The manufacturer part number is 2864800. This tap is designed for general-purpose thread forming in a variety of materials.

Where to buy OSG Thread Forming Tap #4-40 UNC worldwide?

You can source the OSG Thread Forming Tap #4-40 UNC (MPN 2864800) 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; we supply this tap to procurement teams and engineers globally.

How to select the correct OSG Thread Forming Tap for your application?

To select the correct OSG Thread Forming Tap, match the thread size (e.g., #4-40 UNC), class of fit (2B), and chamfer type (bottoming for blind holes) to your workpiece material and hole depth. High-speed steel taps suit general-purpose use. For best results, ensure proper lubrication and alignment during tapping.

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 thread-forming 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 Thread Forming Tap: #4-40 UNC, 2B, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2864805)
OSG
OSG Thread Forming Tap: #4-40 UNC, 2B, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2864805)
OSG Thread Forming Tap: #3-48 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864600)
OSG
OSG Thread Forming Tap: #3-48 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864600)
OSG Thread Forming Tap: #2-56 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864400)
OSG
OSG Thread Forming Tap: #2-56 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2864400)
OSG Thread Forming Tap: #6-32 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2865000)
OSG
OSG Thread Forming Tap: #6-32 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2865000)
OSG Thread Forming Tap: #2-56 UNC, 2B, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2864405)
OSG
OSG Thread Forming Tap: #2-56 UNC, 2B, Bottoming Chamfer, TiN Coated High Speed Steel (MPN 2864405)
OSG Thread Forming Tap: 1/4"-20 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2865800)
OSG
OSG Thread Forming Tap: 1/4"-20 UNC, 2B, Bottoming Chamfer, High Speed Steel (MPN 2865800)

More from OSG

View all OSG parts
This thread-forming tap creates internal threads without cutting, reducing chip debris. Suitable for ductile materials in general manufacturing. Features a modified bottoming chamfer for threading close to blind hole bottoms, and a black oxide cobalt finish for enhanced wear resistance
OSG
This thread-forming tap creates internal threads without cutting, reducing chip debris. Suitable for ductile materials in general manufacturing. Features a modified bottoming chamfer for threading close to blind hole bottoms, and a black oxide cobalt finish for enhanced wear resistance
Thread-forming tap for creating internal threads in metal or plastic workpieces without cutting material. Features a modified bottoming chamfer for threading close to the bottom of blind holes. TiN coating reduces friction and extends tool life. Suitable for general manufacturing applications requiring strong, burr-free threads
OSG
Thread-forming tap for creating internal threads in metal or plastic workpieces without cutting material. Features a modified bottoming chamfer for threading close to the bottom of blind holes. TiN coating reduces friction and extends tool life. Suitable for general manufacturing applications requiring strong, burr-free threads
Thread-forming tap for creating internal threads in ductile materials such as aluminum, brass, and low-carbon steel. Features a 1/4"-28 UNF thread size, H10 tolerance, modified bottoming chamfer, and is made from cobalt high-speed steel for enhanced wear resistance. Suitable for chip-free threading applications requiring high thread strength
OSG
Thread-forming tap for creating internal threads in ductile materials such as aluminum, brass, and low-carbon steel. Features a 1/4"-28 UNF thread size, H10 tolerance, modified bottoming chamfer, and is made from cobalt high-speed steel for enhanced wear resistance. Suitable for chip-free threading applications requiring high thread strength
Thread-forming tap for creating internal threads in ductile materials such as aluminum, brass, and low-carbon steel. Features a bottoming chamfer for threading to the bottom of blind holes, H3 / 2B-3B tolerance, and TiCN-coated cobalt construction. Suitable for general-purpose thread forming in applications requiring strong, burr-free threads
OSG
Thread-forming tap for creating internal threads in ductile materials such as aluminum, brass, and low-carbon steel. Features a bottoming chamfer for threading to the bottom of blind holes, H3 / 2B-3B tolerance, and TiCN-coated cobalt construction. Suitable for general-purpose thread forming in applications requiring strong, burr-free threads
Thread-forming tap for producing internal threads in ductile materials such as aluminum, brass, and low-carbon steel. Features a modified bottoming chamfer for threading close to the bottom of blind holes. Made from cobalt for enhanced wear resistance. Tolerance H9 / 2B ensures precise thread fit
OSG
Thread-forming tap for producing internal threads in ductile materials such as aluminum, brass, and low-carbon steel. Features a modified bottoming chamfer for threading close to the bottom of blind holes. Made from cobalt for enhanced wear resistance. Tolerance H9 / 2B ensures precise thread fit
Thread-forming tap for creating internal threads in ductile materials by cold forming. #5-44 UNF thread size, H6 / 2B tolerance, modified bottoming chamfer for blind holes. TiN coated cobalt construction for extended tool life. Suitable for through-hole or blind-hole threading in aluminum, brass, and low-carbon steel
OSG
Thread-forming tap for creating internal threads in ductile materials by cold forming. #5-44 UNF thread size, H6 / 2B tolerance, modified bottoming chamfer for blind holes. TiN coated cobalt construction for extended tool life. Suitable for through-hole or blind-hole threading in aluminum, brass, and low-carbon steel
This thread-forming tap creates internal threads by cold-forming ductile materials such as aluminum, steel, and stainless steel. It features a 3/8"-16 UNC thread size, H9 / 2B thread limit, and plug chamfer. Made from cobalt, it is suited for general manufacturing applications
OSG
This thread-forming tap creates internal threads by cold-forming ductile materials such as aluminum, steel, and stainless steel. It features a 3/8"-16 UNC thread size, H9 / 2B thread limit, and plug chamfer. Made from cobalt, it is suited for general manufacturing applications
Thread-forming tap for creating internal threads without generating chips. Suitable for ductile materials such as aluminum, brass, and low-carbon steel. Features a modified bottoming chamfer for use in through or blind holes. TiN coated cobalt construction with H10 / 2B tolerance class
OSG
Thread-forming tap for creating internal threads without generating chips. Suitable for ductile materials such as aluminum, brass, and low-carbon steel. Features a modified bottoming chamfer for use in through or blind holes. TiN coated cobalt construction with H10 / 2B tolerance class