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CHICAGO-LATROBE Straight Flute Tap: 3/8"-24 UNF, H3 / 2B, 4 Flute, Plug Chamfer, LH (MPN 317664) - Left-Hand Thread Taps
CHICAGO-LATROBELeft-Hand Thread Taps

CHICAGO-LATROBE Straight Flute Tap: 3/8"-24 UNF, H3 / 2B, 4 Flute, Plug Chamfer, LH (MPN 317664)

The CHICAGO-LATROBE Straight Flute Tap (3/8"-24 UNF) is a left-hand thread tap with an H3 / 2B tolerance, 4 flutes, and a plug chamfer. 3G Electric interprets demand and delivers this genuine industrial tool across…

SKU 3G-OTH-265145

Brand
CHICAGO-LATROBE
Item
Straight Flute Tap: 3/8"-24 UNF, H3 / 2B, 4 Flute, Plug Chamfer, LH
Category
Left-Hand Thread Taps
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
317664
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 (3/8"-24 UNF) is a left-hand thread tap with an H3 / 2B tolerance, 4 flutes, and a plug chamfer. 3G Electric interprets demand and delivers this genuine industrial tool across 14 departments, with specialist depth in combustion, pumps, and controls as an authorised distributor.

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 rotation or left-hand fasteners. It is common in automotive, aerospace, and industrial maintenance where LH threads prevent loosening under vibration.

What are the specifications of the CHICAGO-LATROBE 317664 tap?

The CHICAGO-LATROBE 317664 is a straight flute tap with 3/8"-24 UNF thread, H3 / 2B tolerance, 4 flutes, plug chamfer, and left-hand (LH) rotation. 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 for international orders. We source genuine industrial cutting tools across 14 departments, including taps, dies, and threading accessories, and deliver to your facility.

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

For left-hand threads, choose a tap marked LH with the correct thread size, pitch, and tolerance class (e.g., 3/8"-24 UNF H3). Match the chamfer type to your hole: plug chamfer for general use, taper for starting, or bottoming for blind holes. Always use cutting fluid.

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.

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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