OSG Screw Thread Insert STI Tap: Spiral Point, 7/16"-20 UNF, H4 / 2B-3B, 3 Flute
The OSG Screw Thread Insert STI Tap is a spiral-point tap for 7/16"-20 UNF threads, featuring an H4 / 2B-3B tolerance with a plug chamfer and 3 flutes (MPN 12500400). Designed for threading holes to accept screw…
SKU 3G-OTH-286989
Local availability & support — the Philippines
- Delivery
- 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
- Payment
- Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
- Ships to
- Manila, Quezon City, Cebu, Davao, Batangas
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Product Description
The OSG Screw Thread Insert STI Tap is a spiral-point tap for 7/16"-20 UNF threads, featuring an H4 / 2B-3B tolerance with a plug chamfer and 3 flutes (MPN 12500400). Designed for threading holes to accept screw thread inserts, this tap is supplied by 3G Electric across 14 industrial departments, with specialist depth in cutting tools and precision threading solutions.
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 an OSG Screw Thread Insert STI Tap used for?
An OSG Screw Thread Insert STI Tap is used to cut internal threads in a pre-drilled hole before installing a helical wire thread insert. It is commonly applied in aerospace, automotive, and industrial maintenance to repair or reinforce threads in aluminum, cast iron, and steel components.
What are the specifications of the OSG STI Tap 12500400?
The OSG STI Tap 12500400 is a spiral-point, 3-flute plug chamfer tap with a 7/16"-20 UNF thread size. It has an H4 / 2B-3B tolerance class, designed for thread insert installation. The spiral point design pushes chips forward, making it suitable for through-hole applications.
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 12500400 or other OSG threading tools.
How to select the correct OSG STI Tap size?
To select the correct OSG STI Tap, match the tap thread size and pitch to the thread insert you plan to install. For example, the 7/16"-20 UNF tap is for a 7/16"-20 thread insert. Verify the tap tolerance (H4 / 2B-3B) matches your required thread class. Always use the manufacturer's recommended drill size for the STI tap.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-point sti taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
