OSG Spiral Flute Tap: 5/16"-18 UNC, H3 / 2B-3B, 3 Flute
The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1645056183) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance class, designed for threading steel and stainless steel. 3G Electric interprets your…
SKU 3G-OTH-219144
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.
Need installation or engineering help?
Ask a question
Product Description
The OSG Spiral Flute Tap (5/16"-18 UNC, MPN 1645056183) is a 3-flute, modified bottoming chamfer tap with H3 / 2B-3B tolerance class, designed for threading steel and stainless steel. 3G Electric interprets your demand for this OEM-specified tool, sourcing it across our 14 industrial departments with specialist depth in cutting tools and controls.
Frequently Asked Questions
What is the OSG spiral flute tap 5/16-18 UNC used for?
This OSG spiral flute tap is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging. The modified bottoming chamfer allows threading close to the hole bottom. It is commonly used in automotive, aerospace, and general manufacturing applications.
What are the specifications of the OSG 1645056183 tap?
The OSG 1645056183 is a 5/16-18 UNC spiral flute tap with a H3 / 2B-3B tolerance. It has 3 flutes and a modified bottoming chamfer. This tap is designed for threading blind holes in steel and stainless steel. The H3 limit ensures precise thread fit for class 2B and 3B applications.
Where to buy OSG taps in worldwide?
You can source OSG 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. We supply genuine OSG cutting tools for manufacturing and maintenance operations.
How to select the correct OSG tap for steel threading?
Select an OSG tap based on material, hole type, and thread class. For blind holes in steel, use a spiral flute tap like the 5/16-18 UNC with modified bottoming chamfer. Match the tap tolerance (e.g., H3) to your required thread class (2B or 3B). Ensure the tap size matches the hole diameter and thread pitch.
Used in
Common applications for OSGOSG Products
3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
