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

3G Electric
OSG 3/8"-24 UNF Spiral-Flute STI Tap for Steel & Stainless Steel - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG 3/8"-24 UNF Spiral-Flute STI Tap for Steel & Stainless Steel

The OSG Screw Thread Insert STI Tap (MPN 0147108) is a spiral-flute tap for steel and stainless steel, sized 3/8"-24 UNF with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is designed for…

SKU 3G-OTH-244286

Brand
OSG
Item
3/8"-24 UNF Spiral-Flute STI Tap for Steel & Stainless Steel
Part Number
0147108
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
Available to Order
Also known as:0147108OSG
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
0147108
Type
H3 / 2B-3B, Bottoming Chamfer
Flute
3
UNF
3/8"-24

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 Screw Thread Insert STI Tap (MPN 0147108) is a spiral-flute tap for steel and stainless steel, sized 3/8"-24 UNF with an H3 / 2B-3B tolerance and a bottoming chamfer. It features 3 flutes and is designed for threading holes to accept screw thread inserts.

Frequently Asked Questions

What is an OSG spiral-flute STI tap used for?

An OSG spiral-flute STI tap is used to cut internal threads in steel and stainless steel for screw thread inserts. It creates threads that accept helical coil inserts, providing stronger threads in softer materials. The spiral-flute design evacuates chips upward, making it ideal for blind-hole applications.

What are the specifications of the OSG STI tap 0147108?

The OSG STI tap 0147108 has a UNF thread size of 3/8"-24, with a H3 / 2B-3B tolerance class. It features 3 flutes and a bottoming chamfer, designed for spiral-flute tapping in steel and stainless steel. The manufacturer part number is 0147108.

Where to buy OSG STI taps worldwide?

You can source OSG STI 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 0147108 spiral-flute STI tap.

How to select the correct OSG STI tap for steel?

Select an OSG STI tap based on thread size, pitch, and chamfer type. For blind holes in steel, choose a spiral-flute design with bottoming chamfer, like the 3/8"-24 UNF model. Ensure the tap tolerance (H3 / 2B-3B) matches your required thread class. Always use proper cutting fluid for steel.

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
Not sure this is the right part? Photo-identify it

OSG Products

3G Electric supplies OSG spiral-flute sti taps for steel & stainless steel. 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

More from OSG

View all OSG parts
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 5/16"-18 UNC with tolerance class H3 / 2B-3B, 3 flutes. Suitable for applications requiring thread repair or reinforcement in demanding materials
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 5/16"-18 UNC with tolerance class H3 / 2B-3B, 3 flutes. Suitable for applications requiring thread repair or reinforcement in demanding materials
This OSG spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept screw thread inserts. The spiral flute geometry aids chip evacuation, making it suitable for blind-hole applications. Thread size is 1/4"-20 UNC with H2 / 2B-3B tolerance, and the tap has 3 flutes
OSG
This OSG spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel to accept screw thread inserts. The spiral flute geometry aids chip evacuation, making it suitable for blind-hole applications. Thread size is 1/4"-20 UNC with H2 / 2B-3B tolerance, and the tap has 3 flutes
Spiral-flute STI tap designed for cutting internal threads in steel and stainless steel to accept screw thread inserts. Features a 5/8"-11 UNC thread size, H4 / 2B-3B tolerance, and 4-flute spiral-flute geometry for efficient chip evacuation. Suitable for restoring or strengthening threaded holes in industrial applications
OSG
Spiral-flute STI tap designed for cutting internal threads in steel and stainless steel to accept screw thread inserts. Features a 5/8"-11 UNC thread size, H4 / 2B-3B tolerance, and 4-flute spiral-flute geometry for efficient chip evacuation. Suitable for restoring or strengthening threaded holes in industrial applications
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 3/8"-16 UNC, 3 flutes, tolerance class H4 / 2B-3B. Suitable for repair or reinforcement of threaded holes in demanding materials
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 3/8"-16 UNC, 3 flutes, tolerance class H4 / 2B-3B. Suitable for repair or reinforcement of threaded holes in demanding materials
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 7/8"-14 UNF with H3 / 2B-3B tolerance and 4 flutes. Spiral flute design aids chip evacuation in blind-hole applications. Used in maintenance and repair of threaded holes requiring thread inserts
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. Thread size 7/8"-14 UNF with H3 / 2B-3B tolerance and 4 flutes. Spiral flute design aids chip evacuation in blind-hole applications. Used in maintenance and repair of threaded holes requiring thread inserts
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Designed for through-hole applications, the spiral flute geometry evacuates chips upward. Thread size 7/8"-14 UNF, tolerance H3 / 2B-3B, 4 flutes
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept screw thread inserts. Designed for through-hole applications, the spiral flute geometry evacuates chips upward. Thread size 7/8"-14 UNF, tolerance H3 / 2B-3B, 4 flutes
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. UNC 3/4"-10 thread size, H3 / 2B-3B tolerance, bottoming chamfer, 4 flutes. Suitable for thread repair and reinforcement in demanding applications
OSG
Spiral-flute STI tap for cutting internal threads in steel and stainless steel to accept helical wire thread inserts. UNC 3/4"-10 thread size, H3 / 2B-3B tolerance, bottoming chamfer, 4 flutes. Suitable for thread repair and reinforcement in demanding applications
This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel prior to installing screw thread inserts. It features a 7/8"-9 UNC thread size, H3 / 2B-3B tolerance, bottoming chamfer, and 4 flutes. Suitable for thread repair or insert installation in ferrous materials
OSG
This spiral-flute STI tap is designed for cutting internal threads in steel and stainless steel prior to installing screw thread inserts. It features a 7/8"-9 UNC thread size, H3 / 2B-3B tolerance, bottoming chamfer, and 4 flutes. Suitable for thread repair or insert installation in ferrous materials

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first