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OSG Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H3 / 2B-3B, 4 Flute - General Purpose STI Taps
OSGGeneral Purpose STI Taps

OSG Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H3 / 2B-3B, 4 Flute

SKU 3G-OTH-262131

Brand
OSG
Item
Screw Thread Insert STI Tap: Straight Fute, 3/4"-16 UNF, H3 / 2B-3B, 4 Flute
Category
General Purpose STI Taps
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Technical Specifications

OSG
Manufacturer Part Number
12603500
Type
H3 / 2B-3B, Plug Chamfer
Flute
4
UNF
3/4"-16
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OSG Products
3G Electric (S) Pte. Ltd. — Singapore

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 coil thread insert. It is used in industrial maintenance and production to repair or reinforce stripped threads in metals, ensuring a durable, reusable threaded connection.

What are the specifications of the OSG STI Tap 12603500?

The OSG STI Tap 12603500 is a 3/4"-16 UNF straight flute tap with a plug chamfer and 4 flutes. It is ground to H3 / 2B-3B tolerance for precise thread fit. This general-purpose tap is designed for screw thread insert installation in ferrous and non-ferrous materials.

Where to buy OSG STI Taps worldwide?

3G Electric supplies OSG STI Taps like the 12603500 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote on this or any OSG threading tool across our 14 industrial departments.

How to select the correct OSG STI Tap for a thread repair?

Select an OSG STI Tap that matches the thread size and pitch of the insert you plan to install. For a 3/4"-16 UNF insert, use the OSG 12603500 with H3 / 2B-3B tolerance. Ensure the tap drill size matches the insert manufacturer's recommendation for proper thread depth and fit.

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 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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