OSG #4-40 UNC STI Tap, H2 / 2B-3B, Bottoming Chamfer, 3 Flutes (1804100)
The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for #4-40 UNC threads, featuring a H2 / 2B-3B tolerance class, 3 flutes, and a bottoming chamfer (MPN 1804100).
SKU 3G-OTH-262092
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Need installation or engineering help?
Ask a question
Product Description
The OSG Screw Thread Insert STI Tap (Straight Flute) is a general-purpose STI tap for #4-40 UNC threads, featuring a H2 / 2B-3B tolerance class, 3 flutes, and a bottoming chamfer (MPN 1804100).
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 pre-drilled holes for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and general manufacturing to repair or reinforce threads in aluminum, steel, and other materials.
What are the specifications of the OSG STI Tap #4-40 UNC?
This OSG STI Tap has a #4-40 UNC thread size, H2 / 2B-3B tolerance, 3 flutes, and a bottoming chamfer. It is a straight flute, general purpose tap designed for screw thread insert installation. The manufacturer part number is 1804100.
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 1804100 tap.
How to select the correct OSG STI Tap for thread inserts?
Select an OSG STI Tap that matches the thread size and pitch of the insert, such as #4-40 UNC. Use a bottoming chamfer for blind holes and a plug chamfer for through holes. Ensure the tap tolerance (H2 / 2B-3B) aligns with the required thread class for the insert.
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.
