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

CHICAGO-LATROBE Oversized Spiral-Point Tap

The CHICAGO-LATROBE Spiral Point Tap (MPN 358494) is an oversized spiral-point tap with a 1/4"-20 UNC thread, featuring H13 / 2B tolerance, a plug chamfer, and 2 flutes in high-speed steel. 3G Electric interprets…

SKU 3G-OTH-251243

Brand
CHICAGO-LATROBE
Item
Oversized Spiral-Point Tap
Part Number
358494
Category
Oversized Spiral-Point Taps
Available to Order
Also known as:358494CHICAGO-LATROBE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
358494
Type
H13 / 2B, Plug Chamfer, High Speed Steel
Flute
2

Technical Documents

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

Product Description

The CHICAGO-LATROBE Spiral Point Tap (MPN 358494) is an oversized spiral-point tap with a 1/4"-20 UNC thread, featuring H13 / 2B tolerance, a plug chamfer, and 2 flutes in high-speed steel. 3G Electric interprets this demand and sources the exact OEM part, backed by specialist expertise across 14 industrial departments — and we supply far more than is listed.

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 pushes chips ahead, preventing clogging. Common in automotive, aerospace, and general machining for creating clean internal threads in steel, aluminum, and alloys.

What are the specifications of the CHICAGO-LATROBE 358494 tap?

The CHICAGO-LATROBE 358494 is a 1/4"-20 UNC spiral point tap with H13 / 2B tolerance, 2 flutes, plug chamfer, and high-speed steel construction. It is an oversized tap designed for producing threads in harder materials where standard taps may not achieve the required fit.

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 358494 or other CHICAGO-LATROBE tooling.

How to select the right CHICAGO-LATROBE tap for a job?

Select a tap based on thread size (e.g., 1/4"-20 UNC), material hardness, and hole type. For through holes, a spiral point tap like the CHICAGO-LATROBE 358494 pushes chips forward. For blind holes, use a spiral flute tap. Match the H limit (e.g., H13) to your required thread class.

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-point taps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Oversized spiral-point tap for through-hole threading. Features a 3/4"-16 UNF thread, H11/1B tolerance, 4 flutes, and plug chamfer. The spiral point design pushes chips forward, reducing clogging in production threading applications
CHICAGO-LATROBE
Oversized spiral-point tap for through-hole threading. Features a 3/4"-16 UNF thread, H11/1B tolerance, 4 flutes, and plug chamfer. The spiral point design pushes chips forward, reducing clogging in production threading applications

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