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3G Electric
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-265135) is a left-hand thread tap with a 1/2"-20 UNF size, featuring an H3 / 2B tolerance, 4 flutes, and a plug chamfer. This OEM tool is designed for creating…

SKU 3G-OTH-265135

Brand
CHICAGO-LATROBE
Item
Left-Hand Thread Tap
Part Number
317789
Category
Left-Hand Thread Taps
Available to Order
Also known as:317789CHICAGO-LATROBE
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
317789
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-265135) is a left-hand thread tap with a 1/2"-20 UNF size, featuring an H3 / 2B tolerance, 4 flutes, and a plug chamfer. This OEM tool is designed for creating internal threads in industrial applications, backed by 3G Electric's sourcing and support across 14 departments.

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 a CHICAGO-LATROBE Straight Flute Tap used for?

This left-hand thread tap is used to cut internal UNF threads in metal parts, typically for applications requiring reverse-thread fasteners. It is common in automotive, aerospace, and industrial maintenance where vibration or assembly direction demands left-hand threads.

What are the specifications of the CHICAGO-LATROBE 1/2"-20 UNF tap?

This tap has a 1/2"-20 UNF thread size, H3 / 2B tolerance, 4 flutes, plug chamfer, and left-hand (LH) rotation. The manufacturer part number is 317789. It is designed for through-hole or blind-hole threading in ferrous and non-ferrous materials.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine cutting tools like this 1/2"-20 UNF left-hand tap to any location. Contact us for availability and lead time.

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

Match the tap to the required thread size, pitch, and class of fit—here 1/2"-20 UNF with H3 / 2B tolerance. Choose plug chamfer for most applications; left-hand taps require reversing spindle direction. Always use proper cutting fluid and tap guides to ensure thread quality and tool life.

Used in

Common applications for CHICAGO-LATROBE
Aerospace assembly — Chicago-Latrobe NAS 907 Type B aircraft-extension drill bits for drilling fastener holes in aluminum and titanium skins.
Metal fabrication — Chicago-Latrobe reduced-shank drill bit sets for enlarging holes in structural steel using magnetic drill presses.
Maintenance repair — Chicago-Latrobe left-hand cobalt jobber-length drill bits for removing broken bolts in machinery.
Tool and die making — Chicago-Latrobe jobber-length drill bit sets with 135° split point for precision hole drilling in hardened steels.
Automotive repair — Chicago-Latrobe spiral-flute screw extractors for removing seized fasteners in engine blocks or exhaust systems.
General manufacturing — Chicago-Latrobe HSS jobber-length drill bits for production drilling in mild steel and cast iron.
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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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