CHICAGO-LATROBE Spiral Point Tap: 1/2"-20 UNF, H11 / 1B, 3 Flute, Plug Chamfer
SKU 3G-OTH-251203
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Frequently Asked Questions
What is a CHICAGO-LATROBE spiral point tap used for?
A CHICAGO-LATROBE spiral point tap is used for through-hole threading in metalworking. Its spiral point design pushes chips ahead, preventing clogging. This 1/2"-20 UNF tap with H11/1B tolerance is ideal for precision threading in production machining, automotive, and general manufacturing applications.
What are the specifications of the CHICAGO-LATROBE 313509 tap?
The CHICAGO-LATROBE 313509 is a 1/2"-20 UNF spiral point tap with H11/1B oversize tolerance. It has 3 flutes, a plug chamfer, and is made of high speed steel. This design provides chip evacuation and thread accuracy in through-hole applications.
Where to buy CHICAGO-LATROBE taps in worldwide?
3G Electric supplies CHICAGO-LATROBE taps worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 313509 spiral point tap or other CHICAGO-LATROBE tooling.
How to select the right CHICAGO-LATROBE tap for a job?
Select a CHICAGO-LATROBE tap based on thread size, pitch, material, and hole type. For through holes, a spiral point tap like the 313509 pushes chips forward. For blind holes, use a spiral flute tap. Match the tap tolerance (e.g., H11/1B) to your required thread class.
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3G Electric supplies CHICAGO-LATROBE oversized spiral-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















