CHICAGO-LATROBESpiral-Point Taps for Steel & Stainless Steel

CHICAGO-LATROBE Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Plug Chamfer

SKU 3G-OTH-224132

Brand

CHICAGO-LATROBE

Item

Spiral Point Tap: 1/2"-13 UNC, H3 / 2B, 3 Flute, Plug Chamfer

Technical Specifications

CHICAGO-LATROBE

Manufacturer Part Number

330321

Type

H3 / 2B, Plug Chamfer, Black Oxide Cobalt 

Flute

3

View Full Spec Sheet

Technical Documents

No technical documents available for this product.

Request documentation →

Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.

Talk to an engineer

Ask a question

CHICAGO-LATROBE Products

3G Electric (S) Pte. Ltd. — Singapore

Frequently Asked Questions

What is a CHICAGO-LATROBE spiral point tap used for?

A CHICAGO-LATROBE spiral point tap is designed for through-hole threading in steel and stainless steel. Its spiral point pushes chips ahead, preventing clogging. This 1/2"-13 UNC tap with a plug chamfer and black oxide cobalt finish is ideal for production tapping in automotive, aerospace, and general manufacturing.

What are the specifications of the CHICAGO-LATROBE 330321 tap?

The CHICAGO-LATROBE 330321 is a 1/2"-13 UNC spiral point tap with an H3 / 2B tolerance, 3 flutes, and a plug chamfer. It features a black oxide cobalt finish for heat resistance and wear protection. This tap is designed for through-hole threading in steel and stainless steel workpieces.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps like the 330321 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this spiral point tap for steel and stainless steel.

How to select the right spiral point tap for steel?

For steel, choose a spiral point tap with a plug chamfer and cobalt or black oxide finish for heat resistance. Match the tap size (e.g., 1/2"-13 UNC) and tolerance class (H3 / 2B) to your thread requirements. CHICAGO-LATROBE taps like the 330321 are designed for through-hole applications in steel and stainless steel.

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 spiral-point taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

Browse all CHICAGO-LATROBE products →Contact our engineers →