CHICAGO-LATROBEGeneral Purpose Spiral-Point Taps

CHICAGO-LATROBE Spiral Point Tap: 1/4"-28 UNF, H3 / 2B, 2 Flute, Bottoming Chamfer

The CHICAGO-LATROBE Spiral Point Tap (SKU 15J923, MPN 357173) is a general purpose spiral-point tap with a 1/4"-28 UNF thread size. It features an H3 / 2B tolerance, bottoming chamfer, 2-flute design, and is made of…

SKU 3G-OTH-215711

Brand

CHICAGO-LATROBE

Item

Spiral Point Tap: 1/4"-28 UNF, H3 / 2B, 2 Flute, Bottoming Chamfer

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

357173

Type

H3 / 2B, Bottoming Chamfer, High Speed Steel 

Flute

2

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Technical Documents

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CHICAGO-LATROBE Products

3G Electric (S) Pte. Ltd. — Singapore

Product Description

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 the CHICAGO-LATROBE Spiral Point Tap 357173 used for?

The CHICAGO-LATROBE Spiral Point Tap 357173 is used for threading blind holes in ferrous and non-ferrous materials. Its spiral-point design pushes chips ahead, preventing clogging. Common applications include automotive, aerospace, and general manufacturing where precise UNF threads are required.

What are the specifications of the CHICAGO-LATROBE Spiral Point Tap 357173?

The CHICAGO-LATROBE Spiral Point Tap 357173 has a thread size of 1/4"-28 UNF, with H3 / 2B tolerance. It features 2 flutes, a bottoming chamfer, and is made from high-speed steel. The manufacturer part number is 357173, and it is designed for general-purpose tapping.

Where to buy CHICAGO-LATROBE Spiral Point Tap 357173 worldwide?

You can source the CHICAGO-LATROBE Spiral Point Tap 357173 through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time on this and other CHICAGO-LATROBE tooling.

How to select the right CHICAGO-LATROBE Spiral Point Tap for my application?

Select the CHICAGO-LATROBE Spiral Point Tap based on thread size, pitch, and material. For blind holes, use a bottoming chamfer like the 357173. Match the tap tolerance (e.g., H3) to the required thread class (e.g., 2B). Consult a tap selection guide for optimal speeds and lubrication.

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 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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