OSG Spiral Point Tap: #4-40 UNC, H2 / 2B-3B, 2 Flute
SKU 3G-OTH-223904
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Frequently Asked Questions
What is OSG spiral point tap #4-40 UNC used for?
This OSG spiral point tap is designed for threading blind or through holes in steel and stainless steel. Its spiral point design pushes chips forward, reducing clogging and enabling faster production in CNC and manual tapping applications.
What are the specifications of OSG tap 1730008?
The OSG 1730008 is a #4-40 UNC spiral point tap with H2 / 2B-3B tolerance, 2 flutes, and a plug chamfer. It is intended for threading steel and stainless steel. The H2 limit ensures precise thread fit for class 2B and 3B applications.
Where to buy OSG spiral point tap #4-40 UNC worldwide?
3G Electric supplies and delivers the OSG 1730008 spiral point tap worldwide. We handle full logistics and customs clearance, ensuring you receive genuine OSG tooling for your threading operations, regardless of your location.
How to select the right spiral point tap for steel?
For steel, choose a spiral point tap with a plug chamfer and H2 or H3 tolerance for general-purpose threading. Match the tap size and thread pitch to your hole specifications. OSG taps like the #4-40 UNC are engineered for chip evacuation in blind holes.
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3G Electric supplies OSG spiral-point taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.














