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 30205601 Spiral-Flute STI Tap, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute - Spiral-Flute STI Taps for Steel & Stainless Steel
OSGSpiral-Flute STI Taps for Steel & Stainless Steel

OSG 30205601 Spiral-Flute STI Tap, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute

<p>The OSG 30205601 is a high-performance spiral-flute STI tap designed for threading steel and stainless steel. With a 7/8&quot;-14 UNF thread size and H3 tolerance for 2B-3B class fits, this 4-flute tap ensures…

SKU 3G-OTH-244250

Brand
OSG
Item
30205601 Spiral-Flute STI Tap, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute
Part Number
30205601
Category
Spiral-Flute STI Taps for Steel & Stainless Steel
Available to Order
Also known as:30205601OSG
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
30205601
Model
30205601 , 7/8"-14 UNF, H3 / , 4

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

<p>The OSG 30205601 is a high-performance spiral-flute STI tap designed for threading steel and stainless steel. With a 7/8&quot;-14 UNF thread size and H3 tolerance for 2B-3B class fits, this 4-flute tap ensures efficient chip evacuation and excellent thread quality. It is ideal for producing strong threads in demanding applications, commonly used in automotive, aerospace, and general engineering.</p><p>As a Singapore-based supplier, 3G Electric offers this OSG tap with worldwide shipping. Request a quote in SGD, and for local buyers, GST is handled seamlessly. Enjoy fast delivery across Singapore and Southeast Asia.</p>

Frequently Asked Questions

What is the thread size and tolerance of the OSG 30205601 tap?

The OSG 30205601 is a spiral-flute STI tap with a 7/8&quot;-14 UNF thread size and H3 tolerance, suitable for 2B-3B class thread fits.

Can I get a quote in SGD and fast delivery in Singapore?

Yes, 3G Electric provides quotes in SGD upon request. For Singapore buyers, GST is handled, and we offer fast delivery across Singapore and Southeast Asia.

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
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 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. 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
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. 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
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

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first