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CHICAGO-LATROBE Left-Hand Thread Tap - Left-Hand Thread Taps
CHICAGO-LATROBELeft-Hand Thread Taps

CHICAGO-LATROBE Left-Hand Thread Tap

The CHICAGO-LATROBE Straight Flute Tap (SKU 3G-OTH-265148) is a left-hand thread tap for 1/4"-20 UNC threads, featuring an H3 / 2B tolerance, 4 flutes, and a plug chamfer. This OEM-sourced tool is part of our curated…

SKU 3G-OTH-265148

Brand
CHICAGO-LATROBE
Item
Left-Hand Thread Tap
Part Number
317516
Category
Left-Hand Thread Taps
Available to Order
Also known as:317516CHICAGO-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
317516
Type
H3 / 2B, Plug Chamfer, LH
Flute
4

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

Product Description

The CHICAGO-LATROBE Straight Flute Tap (SKU 3G-OTH-265148) is a left-hand thread tap for 1/4"-20 UNC threads, featuring an H3 / 2B tolerance, 4 flutes, and a plug chamfer. This OEM-sourced tool is part of our curated industrial supply across 14 departments, with specialist depth in cutting tools and machining.

Frequently Asked Questions

What is the CHICAGO-LATROBE Straight Flute Tap used for?

This left-hand thread tap is used to cut internal 1/4"-20 UNC threads in metal parts, typically for applications requiring reverse-thread fasteners. It is a standard tool in machining and maintenance operations across industrial sectors.

What are the specifications of the CHICAGO-LATROBE Straight Flute Tap?

The tap has a 1/4"-20 UNC thread size, H3 / 2B tolerance, 4 flutes, and a plug chamfer. It is left-hand (LH) threaded, with manufacturer part number 317516. These specs ensure precise thread cutting in through or blind holes.

Where to buy CHICAGO-LATROBE Straight Flute Tap worldwide?

3G Electric supplies and delivers the CHICAGO-LATROBE Straight Flute Tap worldwide. We handle full logistics and customs clearance, sourcing genuine OEM tools like this 1/4"-20 UNC left-hand tap for global industrial customers.

How to select the correct tap for left-hand threads?

For left-hand threads, ensure the tap is marked LH and matches the required thread size and pitch, such as 1/4"-20 UNC. Verify the chamfer type (plug for general use) and tolerance (H3 for standard fit). Always confirm material compatibility for best results.

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

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