EXW Singapore — collect or forward from our Singapore office.

3G Electric
CHICAGO-LATROBE Oversized Spiral-Point Tap - Oversized Spiral-Point Taps
CHICAGO-LATROBEOversized Spiral-Point Taps

CHICAGO-LATROBE Oversized Spiral-Point Tap

The CHICAGO-LATROBE Spiral Point Tap (SKU 3G-OTH-251203) is an oversized spiral-point tap with a 1/2"-20 UNF thread, featuring an H11 / 1B tolerance, plug chamfer, and 3 flutes, made from high-speed steel (MPN 313509).

SKU 3G-OTH-251203

Brand
CHICAGO-LATROBE
Item
Oversized Spiral-Point Tap
Part Number
313509
Category
Oversized Spiral-Point Taps
Available to Order
Also known as:313509CHICAGO-LATROBE
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

CHICAGO-LATROBE
Manufacturer Part Number
313509
Type
H11 / 1B, Plug Chamfer, High Speed Steel
Flute
3

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

Product Description

The CHICAGO-LATROBE Spiral Point Tap (SKU 3G-OTH-251203) is an oversized spiral-point tap with a 1/2"-20 UNF thread, featuring an H11 / 1B tolerance, plug chamfer, and 3 flutes, made from high-speed steel (MPN 313509).

Frequently Asked Questions

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

A CHICAGO-LATROBE spiral point tap is used for through-hole threading in metalworking. Its spiral point design pushes chips ahead, preventing clogging. This 1/2"-20 UNF tap with H11/1B tolerance is ideal for precision threading in production machining, automotive, and general manufacturing applications.

What are the specifications of the CHICAGO-LATROBE 313509 tap?

The CHICAGO-LATROBE 313509 is a 1/2"-20 UNF spiral point tap with H11/1B oversize tolerance. It has 3 flutes, a plug chamfer, and is made of high speed steel. This design provides chip evacuation and thread accuracy in through-hole applications.

Where to buy CHICAGO-LATROBE taps in worldwide?

3G Electric supplies CHICAGO-LATROBE taps worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on the 313509 spiral point tap or other CHICAGO-LATROBE tooling.

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

Select a CHICAGO-LATROBE tap based on thread size, pitch, material, and hole type. For through holes, a spiral point tap like the 313509 pushes chips forward. For blind holes, use a spiral flute tap. Match the tap tolerance (e.g., H11/1B) to your required thread class.

Used in

Common applications for CHICAGO-LATROBE
Aerospace manufacturing — Chicago-Latrobe NAS-spec jobber-length drill bits (e.g., MPN 42631) for drilling holes in airframe components.
Metal fabrication — Chicago-Latrobe single-flute countersinks (e.g., MPN 56774) for deburring and chamfering holes in steel plates.
Machine shop — Chicago-Latrobe 82° countersinks (e.g., MPN 56738) for creating flush-mount recesses for flat-head screws in assemblies.
Maintenance and repair — Chicago-Latrobe 90° countersinks (e.g., MPN 56760) for chamfering holes and removing burrs on industrial equipment.
Automotive production — Chicago-Latrobe HSS drill bits for holemaking in engine blocks and chassis components.
General machining — Chicago-Latrobe countersinks in various body diameters for chamfering and deburring in job shops.
Not sure this is the right part? Photo-identify it→

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.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from CHICAGO-LATROBE

View all CHICAGO-LATROBE parts →
Oversized spiral-point tap for through-hole threading. Features a 3/4"-16 UNF thread, H11/1B tolerance, 4 flutes, and plug chamfer. The spiral point design pushes chips forward, reducing clogging in production threading applications
CHICAGO-LATROBE
Oversized spiral-point tap for through-hole threading. Features a 3/4"-16 UNF thread, H11/1B tolerance, 4 flutes, and plug chamfer. The spiral point design pushes chips forward, reducing clogging in production threading applications

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first