OSG Screw Thread Insert STI Tap: Spiral Point, 5/8"-11 UNC, H3 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 33ZH90, MPN 30103101) is a spiral-point STI tap for steel and stainless steel, with a 5/8"-11 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug…
SKU 3G-OTH-265477
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Product Description
The OSG Screw Thread Insert STI Tap: Spiral Point (SKU 33ZH90, MPN 30103101) is a spiral-point STI tap for steel and stainless steel, with a 5/8"-11 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. 3G Electric interprets this demand and sources the genuine OSG tool, supporting your threading operations across 14 industrial departments — with specialist depth in combustion, pumps and controls as an authorised distributor.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is the OSG Screw Thread Insert STI Tap used for?
This OSG spiral-point STI tap is designed for cutting internal threads in steel and stainless steel before installing screw thread inserts. It is commonly used in automotive, aerospace, and general manufacturing applications where thread repair or reinforcement is required.
What are the specifications of the OSG 30103101 STI tap?
The OSG 30103101 is a spiral-point STI tap with a 5/8"-11 UNC thread, H3 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for threading steel and stainless steel prior to inserting helical coil thread inserts.
Where to buy OSG STI taps in worldwide?
3G Electric supplies OSG STI taps worldwide. As a global industrial distributor, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on the OSG 30103101 spiral-point STI tap.
How to select the correct STI tap for thread inserts?
Select an STI tap that matches the insert's thread size and pitch, such as 5/8"-11 UNC. Use a plug chamfer for through holes and a bottoming chamfer for blind holes. The H3 tolerance ensures proper fit for 2B-3B class threads in steel or stainless steel.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















