OSG Screw Thread Insert STI Tap: Spiral Point, #2-56 UNC, H2 / 2B-3B, 2 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 54LL76, MPN 1103600100) is a #2-56 UNC, H2 / 2B-3B, Plug Chamfer tap with 2 flutes, designed for threading aluminum. 3G Electric interprets customer demand and…
SKU 3G-OTH-250402
Need installation or engineering help?
Ask a question
Product Description
The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 54LL76, MPN 1103600100) is a #2-56 UNC, H2 / 2B-3B, Plug Chamfer tap with 2 flutes, designed for threading aluminum. 3G Electric interprets customer demand and delivers this genuine industrial tap across 14 departments — with specialist depth in combustion, pumps and controls as an authorised distributor — ensuring you get the right solution, not just a catalog.
Frequently Asked Questions
What is OSG Screw Thread Insert STI Tap used for?
This OSG spiral-point STI tap is designed for cutting internal threads in aluminum and non-ferrous materials before installing screw thread inserts. It is commonly used in aerospace, automotive, and general manufacturing where strong, wear-resistant threads are required in softer base materials.
What are the specifications of the OSG STI Tap #2-56 UNC?
This OSG STI tap has a #2-56 UNC thread size, H2 / 2B-3B tolerance, 2-flute design, and plug chamfer. It is a spiral-point tap optimized for aluminum. The manufacturer part number is 1103600100. It is used to create threads that accept screw thread inserts for enhanced thread strength.
Where to buy OSG STI Tap #2-56 UNC worldwide?
3G Electric supplies the OSG 1103600100 STI tap worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time. We source and deliver this precision threading tool to support your manufacturing operations.
How to select the correct OSG STI tap for aluminum?
Select an STI tap with the same thread size and pitch as the insert you will install. For aluminum, choose a spiral-point design with a plug chamfer and H2 tolerance, like this OSG model. Ensure the tap is marked for STI (screw thread insert) use, as standard taps produce undersized threads for inserts.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for aluminum. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















