OSG Screw Thread Insert STI Tap: Spiral Point, 1/2"-20 UNF, H4 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for steel and stainless steel, specified as 1/2"-20 UNF with H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30102508).
SKU 3G-OTH-265356
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-point tap for steel and stainless steel, specified as 1/2"-20 UNF with H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer (MPN 30102508).
Frequently Asked Questions
What is an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to cut internal threads in steel and stainless steel for installing helical wire thread inserts. It is commonly applied in aerospace, automotive, and heavy equipment manufacturing where thread repair or reinforcement is needed.
What are the specifications of the OSG STI Tap 30102508?
The OSG STI Tap 30102508 is a spiral-point tap with a 1/2"-20 UNF thread, H4 / 2B-3B tolerance, 3 flutes, and a plug chamfer. It is designed for threading holes that will accept screw thread inserts in steel and stainless steel materials.
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 30102508 tap.
How to select the correct OSG STI Tap for thread inserts?
To select the correct OSG STI Tap, match the tap thread size and pitch to the insert's internal thread specification. For the 30102508, use it with 1/2"-20 UNF inserts. Ensure the tap tolerance (H4 / 2B-3B) aligns with the required thread class for your application.
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.
