We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-12 UNF, H6 / 2B-3B, 4 Flute - Spiral-Flute STI Taps
OSGSpiral-Flute STI Taps

OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-12 UNF, H6 / 2B-3B, 4 Flute

The OSG Screw Thread Insert STI Tap is a spiral-flute tap designed for threading holes that will accept screw thread inserts. This specific model (MPN 10802700) features a 1"-12 UNF thread size, an H6 / 2B-3B…

SKU 3G-OTH-273365

Brand
OSG
Item
Screw Thread Insert STI Tap: Spiral Fute, 1"-12 UNF, H6 / 2B-3B, 4 Flute
Category
Spiral-Flute STI 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

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

OSG
Manufacturer Part Number
10802700
Type
H6 / 2B-3B, Bottoming Chamfer
Flute
4
UNF
1"-12

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 is a spiral-flute tap designed for threading holes that will accept screw thread inserts. This specific model (MPN 10802700) features a 1"-12 UNF thread size, an H6 / 2B-3B tolerance class, a bottoming chamfer, and 4 flutes, making it suitable for through-hole or blind-hole applications requiring precise internal threads.

Frequently Asked Questions

What is an OSG Screw Thread Insert STI Tap used for?

An OSG Screw Thread Insert STI Tap cuts internal threads in a pre-drilled hole to accept a helical wire thread insert. It is used in aerospace, automotive, and general manufacturing to repair or strengthen threads in softer materials like aluminum or cast iron.

What are the specifications of the OSG STI Tap 10802700?

The OSG STI Tap 10802700 is a 1"-12 UNF spiral-flute tap with a H6 / 2B-3B tolerance class. It has 4 flutes and a bottoming chamfer, designed for through-hole or blind-hole thread insertion. The spiral flute design helps evacuate chips upward during tapping.

Where to buy OSG STI Tap 10802700 worldwide?

3G Electric supplies the OSG STI Tap 10802700 to customers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for a quote and lead time on this precision threading tool.

How to select the correct STI tap size for a thread insert?

Select an STI tap that matches the thread insert's nominal size and pitch, such as 1"-12 UNF. The tap tolerance (e.g., H6 / 2B-3B) must align with the insert manufacturer's recommendation. Always use the correct drill size for the STI tap's major diameter before 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 spiral-flute sti 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 Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H6 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802500)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H6 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802500)
OSG Screw Thread Insert STI Tap: Spiral Fute, #6-40 UNF, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 10800300)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, #6-40 UNF, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 10800300)
OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802200)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 7/8"-14 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802200)
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10801800)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 3/4"-16 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10801800)
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802400)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-8 UNC, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802400)
OSG Screw Thread Insert STI Tap: Spiral Fute, 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10801400)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 5/8"-18 UNF, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10801400)

More from OSG

View all OSG parts
OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H, 3 Flute, High Speed Steel (MPN 10900700)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M8x1.25 Metric, D3 / 4H-6H, 3 Flute, High Speed Steel (MPN 10900700)
OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-13 UNC, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 8018000)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1/2"-13 UNC, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 8018000)
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-12 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802600)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 1"-12 UNF, H4 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 10802600)
OSG Screw Thread Insert STI Tap: Spiral Fute, #10-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 8008100)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, #10-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 8008100)
OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 8017000)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, 7/16"-14 UNC, H3 / 2B-3B, 4 Flute, Bottoming Chamfer (MPN 8017000)
OSG Screw Thread Insert STI Tap: Spiral Fute, M10x1.5 Metric, D4 / 4H-6H, 3 Flute, High Speed Steel (MPN 10900800)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M10x1.5 Metric, D4 / 4H-6H, 3 Flute, High Speed Steel (MPN 10900800)
OSG Screw Thread Insert STI Tap: Spiral Fute, #6-32 UNC, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 8005400)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, #6-32 UNC, H2 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 8005400)
OSG Screw Thread Insert STI Tap: Spiral Fute, M4x0.7 Metric, D3 / 4H-6H, 3 Flute, High Speed Steel (MPN 10900400)
OSG
OSG Screw Thread Insert STI Tap: Spiral Fute, M4x0.7 Metric, D3 / 4H-6H, 3 Flute, High Speed Steel (MPN 10900400)