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OSG Spiral-Point STI Tap, 3/4"-10 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer - Spiral-Point STI Taps
OSGSpiral-Point STI Taps

OSG Spiral-Point STI Tap, 3/4"-10 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes to accept screw thread inserts. This specific model (MPN 12501700) features a 3/4"-10 UNC thread size, H3 / 2B-3B tolerance, 3…

SKU 3G-OTH-287006

Brand
OSG
Item
Spiral-Point STI Tap, 3/4"-10 UNC, H3 / 2B-3B, 3 Flute, Plug Chamfer
Part Number
12501700
Category
Spiral-Point STI Taps
Available to Order
Also known as:12501700OSG
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Technical Specifications

OSG
Manufacturer Part Number
12501700
Type
H3 / 2B-3B, Plug Chamfer
Flute
3
UNC
3/4"-10

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

Product Description

The OSG Screw Thread Insert STI Tap is a spiral-point tap designed for threading holes to accept screw thread inserts. This specific model (MPN 12501700) features a 3/4"-10 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer, ensuring accurate thread formation for insert installation.

Frequently Asked Questions

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

An OSG Screw Thread Insert STI Tap is used to cut internal threads in pre-drilled holes for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce threads in aluminum, cast iron, and steel components.

What are the specifications of the OSG 12501700 STI Tap?

The OSG 12501700 is a spiral-point STI tap with size 3/4"-10 UNC, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for through-hole threading and produces threads that accept standard screw thread inserts. The spiral-point design pushes chips forward for efficient cutting.

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 12501700 or other STI tap sizes.

How to select the correct OSG STI Tap size?

To select the correct OSG STI Tap, match the tap size to the screw thread insert you plan to install. The tap must be marked "STI" and have the same thread size and pitch as the insert. For example, the OSG 12501700 is for 3/4"-10 UNC inserts. Always verify the H limit and chamfer type for your material.

Used in

Common applications for OSG
Aerospace — OSG STI taps for installing helical wire thread inserts in aluminum components
Automotive — OSG spiral-point taps for through-hole threading in engine blocks and transmission cases
General machining — OSG spiral-flute taps for blind-hole threading in steel and stainless steel parts
Heavy equipment repair — OSG thread-forming taps for creating threads in ductile iron and steel castings
Precision manufacturing — OSG solid carbide chucking reamers for finishing holes in hydraulic manifolds
Die and mold — OSG coolant-through solid carbide drills for deep-hole drilling in tool steels
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OSG Products

3G Electric supplies OSG spiral-point sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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This spiral-point STI tap is designed for cutting internal threads in through holes prior to installing helical coil thread inserts. It features a 1"-8 UNC thread, H6 tolerance, plug chamfer, 4 flutes, and is made from high-speed steel. Typical applications include thread repair and reinforcement in metal components
OSG
This spiral-point STI tap is designed for cutting internal threads in through holes prior to installing helical coil thread inserts. It features a 1"-8 UNC thread, H6 tolerance, plug chamfer, 4 flutes, and is made from high-speed steel. Typical applications include thread repair and reinforcement in metal components

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