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CHICAGO-LATROBE Oversized Spiral-Flute Tap - Oversized Spiral-Flute Taps
CHICAGO-LATROBEOversized Spiral-Flute Taps

CHICAGO-LATROBE Oversized Spiral-Flute Tap

The CHICAGO-LATROBE Spiral Flute Tap (7/16"-14 UNC) is an oversized spiral-flute tap with a semi-bottoming chamfer, H11 / 1B tolerance, and 3 flutes (MPN 313531).

SKU 3G-OTH-211286

Brand
CHICAGO-LATROBE
Item
Oversized Spiral-Flute Tap
Part Number
313531
Category
Oversized Spiral-Flute Taps
Available to Order
Also known as:313531CHICAGO-LATROBE
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Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
313531
Type
H11 / 1B, Semi-Bottoming Chamfer
Flute
3

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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Spiral Flute Tap (7/16"-14 UNC) is an oversized spiral-flute tap with a semi-bottoming chamfer, H11 / 1B tolerance, and 3 flutes (MPN 313531).

Frequently Asked Questions

What is the CHICAGO-LATROBE 313531 spiral flute tap used for?

The CHICAGO-LATROBE 313531 spiral flute tap is used for threading blind holes in materials such as steel and aluminum. Its spiral flute design evacuates chips upward, preventing clogging. The semi-bottoming chamfer allows threading close to the bottom of the hole. This oversized tap produces an H11 / 1B fit for UNC threads.

What are the specifications of the CHICAGO-LATROBE 313531 tap?

The CHICAGO-LATROBE 313531 is a 7/16"-14 UNC spiral flute tap with an H11 / 1B tolerance, 3 flutes, and a semi-bottoming chamfer. It is an oversized tap designed for threading blind holes. The manufacturer part number is 313531. This tool is suitable for general industrial tapping applications.

Where to buy CHICAGO-LATROBE taps in worldwide?

You can source CHICAGO-LATROBE taps, including the 313531, through 3G Electric. We handle full logistics, customs clearance, and delivery to worldwide destinations. As a global industrial equipment distributor since 1990, we provide reliable sourcing for cutting tools. Contact us for availability and lead times.

How to select the correct spiral flute tap for blind holes?

For blind holes, choose a spiral flute tap with a semi-bottoming chamfer, like the CHICAGO-LATROBE 313531. The spiral flutes push chips out of the hole, preventing breakage. Ensure the tap size matches the thread specification (e.g., 7/16"-14 UNC) and tolerance class (H11 / 1B). Use proper cutting fluid and speed for the material.

Used in

Common applications for CHICAGO-LATROBE
Aerospace manufacturing — Chicago-Latrobe NAS-spec jobber-length drill bits (e.g., MPN 42631) for drilling holes in airframe components.
Metal fabrication — Chicago-Latrobe single-flute countersinks (e.g., MPN 56774) for deburring and chamfering holes in steel plates.
Machine shop — Chicago-Latrobe 82° countersinks (e.g., MPN 56738) for creating flush-mount recesses for flat-head screws in assemblies.
Maintenance and repair — Chicago-Latrobe 90° countersinks (e.g., MPN 56760) for chamfering holes and removing burrs on industrial equipment.
Automotive production — Chicago-Latrobe HSS drill bits for holemaking in engine blocks and chassis components.
General machining — Chicago-Latrobe countersinks in various body diameters for chamfering and deburring in job shops.
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CHICAGO-LATROBE Products

3G Electric supplies CHICAGO-LATROBE oversized spiral-flute taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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