OSG Screw Thread Insert STI Tap: Straight Fute, 1"-12 UNF, H4 / 2B, 4 Flute
The OSG Screw Thread Insert STI Tap (SKU 33ZK70, MPN 12605100) is a general-purpose STI tap with a straight flute design, specified as 1"-12 UNF, H4 / 2B tolerance, 4 flutes, and a plug chamfer. 3G Electric…
SKU 3G-OTH-262078
Need installation or engineering help?
Ask a question
Product Description
The OSG Screw Thread Insert STI Tap (SKU 33ZK70, MPN 12605100) is a general-purpose STI tap with a straight flute design, specified as 1"-12 UNF, H4 / 2B tolerance, 4 flutes, and a plug chamfer. 3G Electric interprets this demand and sources the exact OEM-specified tool, supporting your threading operations across 14 industrial departments with specialist depth in cutting tools and controls.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
The OSG Screw Thread Insert STI Tap is used to cut internal threads in metal or plastic for installing screw thread inserts. It is ideal for repair and production applications in automotive, aerospace, and general manufacturing where thread reinforcement is needed.
What are the specifications of the OSG STI Tap 12605100?
The OSG STI Tap 12605100 is a straight flute, general purpose tap with a 1"-12 UNF thread, H4/2B tolerance, 4 flutes, and a plug chamfer. It is designed for cutting threads to accept screw thread inserts in materials up to 850 °C.
Where to buy the OSG STI Tap 12605100 worldwide?
You can source the OSG STI Tap 12605100 worldwide through 3G Electric. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine OSG tooling globally.
How to select the correct OSG STI tap for a thread insert?
Select an OSG STI tap that matches the thread size and pitch of the insert, such as 1"-12 UNF. Use a plug chamfer for through holes and a bottoming chamfer for blind holes. Ensure the tap tolerance (e.g., H4) aligns with the required class of fit (e.g., 2B).
Used in
Common applications for OSGOSG 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.















