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CHICAGO-LATROBE #4-40 UNC General Purpose Spiral-Point Tap - General Purpose Spiral-Point Taps
CHICAGO-LATROBEGeneral Purpose Spiral-Point Taps

CHICAGO-LATROBE #4-40 UNC General Purpose Spiral-Point Tap

<p>The CHICAGO-LATROBE #4-40 UNC General Purpose Spiral-Point Tap (MPN 356324) is a high-speed steel tap designed for efficient threading in through-hole applications. With a plug chamfer and 2-flute design, it…

SKU 3G-OTH-214042

Brand
CHICAGO-LATROBE
Item
#4-40 UNC General Purpose Spiral-Point Tap
Part Number
356324
Category
General Purpose Spiral-Point Taps
Available to Order
Also known as:356324CHICAGO-LATROBE
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
356324
Type
H2 / 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

<p>The CHICAGO-LATROBE #4-40 UNC General Purpose Spiral-Point Tap (MPN 356324) is a high-speed steel tap designed for efficient threading in through-hole applications. With a plug chamfer and 2-flute design, it offers balanced cutting action and chip evacuation, making it suitable for general purpose tapping in a variety of materials. The H2 / 2B tolerance ensures a precise thread fit.</p><p>Ideal for manufacturing and maintenance operations, this tap is a reliable choice for production environments. As a Singapore-based supplier, 3G Electric offers this tap with SGD quotes on request, handles GST for local buyers, and provides fast delivery across Singapore and Southeast Asia, with worldwide shipping available.</p>

Frequently Asked Questions

What does the H2 / 2B specification mean for this tap?

H2 indicates the tap's thread height tolerance, providing a slightly larger pitch diameter for better fit in 2B class threads. 2B is a standard tolerance for tapped holes, ensuring a medium fit for general applications.

Is this tap suitable for through-hole tapping?

Yes, the spiral-point design (also known as gun nose) pushes chips ahead of the tap, making it ideal for through-hole applications. The plug chamfer also helps in starting threads in through holes.

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 general purpose 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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General purpose spiral-point tap for threading through-holes in metal. Features a spiral-point design that pushes chips forward to prevent clogging. Made from high-speed steel with a bottoming chamfer and 3 flutes. Thread size 1/2"-20 UNF, tolerance H3 / 2B
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This spiral-point tap is designed for general-purpose threading of blind or through holes in metals such as steel, aluminum, and cast iron. The spiral-point geometry pushes chips forward, reducing clogging in production environments. Made from high-speed steel with a D4 / 6H tolerance class, 2 flutes, and a plug chamfer. Manufacturer part number 360854

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