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CHICAGO-LATROBE Spiral Point Tap: 3/8"-16 UNC, H11 / 1B, 3 Flute, Plug Chamfer - Oversized Spiral-Point Taps
CHICAGO-LATROBEOversized Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 3/8"-16 UNC, H11 / 1B, 3 Flute, Plug Chamfer

The CHICAGO-LATROBE Spiral Point Tap (SKU 449T49) is an oversized spiral-point tap in 3/8"-16 UNC, featuring H11 / 1B tolerance, a plug chamfer, 3 flutes, and high-speed steel construction (MPN 313504). 3G Electric…

SKU 3G-OTH-251175

Brand
CHICAGO-LATROBE
Item
Spiral Point Tap: 3/8"-16 UNC, H11 / 1B, 3 Flute, Plug Chamfer
Category
Oversized Spiral-Point Taps
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Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
313504
Type
H11 / 1B, Plug Chamfer, High Speed Steel
Flute
3
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CHICAGO-LATROBE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The CHICAGO-LATROBE Spiral Point Tap (SKU 449T49) is an oversized spiral-point tap in 3/8"-16 UNC, featuring H11 / 1B tolerance, a plug chamfer, 3 flutes, and high-speed steel construction (MPN 313504). 3G Electric interprets this demand and sources the genuine OEM part across 14 industrial departments, with specialist depth in cutting tools and machining supplies.

Frequently Asked Questions

What is the CHICAGO-LATROBE Spiral Point Tap used for?

The CHICAGO-LATROBE Spiral Point Tap is used for threading holes in metalworking applications. Its spiral-point design pushes chips ahead, making it ideal for through-hole tapping in production environments. It is commonly used in automotive, aerospace, and general manufacturing for creating precise internal threads.

What are the specifications of the CHICAGO-LATROBE Spiral Point Tap?

This tap has a 3/8"-16 UNC thread size, H11 / 1B tolerance, 3 flutes, and a plug chamfer. It is made from high-speed steel (HSS) and is an oversized spiral-point tap. The manufacturer part number is 313504. These specs ensure compatibility with standard UNC nuts and gages.

Where to buy CHICAGO-LATROBE taps in worldwide?

You can source CHICAGO-LATROBE taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead times on this and other cutting tools.

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

Select a tap based on thread size, material, and hole type. For through holes, a spiral-point tap like this CHICAGO-LATROBE model pushes chips forward. Match the thread class (e.g., 1B) to your application. Always use proper cutting fluid and tap drill size for best results.

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 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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