CHICAGO-LATROBE Spiral Point Tap: 5/16"-24 UNF, H11 / 1B, 3 Flute, Plug Chamfer
The CHICAGO-LATROBE Spiral Point Tap (SKU 449T48) is an oversized spiral-point tap with a 5/16"-24 UNF thread, featuring a H11 / 1B tolerance, plug chamfer, and 3-flute design in high-speed steel (MPN 313503). 3G…
SKU 3G-OTH-251289
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Product Description
The CHICAGO-LATROBE Spiral Point Tap (SKU 449T48) is an oversized spiral-point tap with a 5/16"-24 UNF thread, featuring a H11 / 1B tolerance, plug chamfer, and 3-flute design in high-speed steel (MPN 313503). 3G Electric interprets this demand and sources the genuine OEM part across 14 industrial departments — with specialist depth in cutting tools — ensuring you get the right answer, not just a catalog.
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 the CHICAGO-LATROBE Spiral Point Tap 313503 used for?
The CHICAGO-LATROBE Spiral Point Tap 313503 is used for threading holes in metal, particularly for through-hole applications. Its spiral-point design pushes chips ahead, reducing clogging. It is suitable for industrial maintenance, automotive, and general manufacturing where precise UNF threads are required.
What are the specifications of the CHICAGO-LATROBE Spiral Point Tap 313503?
The CHICAGO-LATROBE Spiral Point Tap 313503 has a thread size of 5/16"-24 UNF, with an H11 / 1B tolerance. It features 3 flutes, a plug chamfer, and is made of high-speed steel. The manufacturer part number is 313503. It is an oversized tap for producing threads in harder materials.
Where to buy CHICAGO-LATROBE taps in worldwide?
You can source CHICAGO-LATROBE 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 times. We supply genuine CHICAGO-LATROBE tooling for industrial applications.
How to select the correct CHICAGO-LATROBE tap for a job?
To select the correct CHICAGO-LATROBE tap, match the thread size (e.g., 5/16"-24 UNF), thread class (e.g., 1B), and chamfer type (e.g., plug) to your hole requirements. For through holes, a spiral-point tap like the 313503 is ideal. Consider material hardness and tap coating for extended tool life.
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Common applications for CHICAGO-LATROBECHICAGO-LATROBE Products
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.















