Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
YANKEE Oversized Built-in-Pilot Counterbore 303-1/2 - Oversized Built-in-Pilot Counterbores
YANKEEOversized Built-in-Pilot Counterbores

YANKEE Oversized Built-in-Pilot Counterbore 303-1/2

The YANKEE Counterbore with Built-In Pilot (MPN 303-1/2) is an oversized built-in-pilot counterbore designed for 1/2" screws. It features a 1/32" oversized design and a 1/2" bore diameter. This tool is manufactured…

SKU 3G-OTH-184286

Also listed as: 30312 · 303 1 2 · 303-1-2

Brand
YANKEE
Item
Oversized Built-in-Pilot Counterbore 303-1/2
Part Number
303-1/2
Category
Oversized Built-in-Pilot Counterbores
Available to Order
Also known as:303-1/2YANKEE
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.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

YANKEE
Manufacturer Part Number
303-1/2
Bore Dia
1/2 in

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

YANKEE Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The YANKEE Counterbore with Built-In Pilot (MPN 303-1/2) is an oversized built-in-pilot counterbore designed for 1/2" screws. It features a 1/32" oversized design and a 1/2" bore diameter. This tool is manufactured by YANKEE.

Frequently Asked Questions

What is the YANKEE Counterbore with Built-In Pilot used for?

The YANKEE Counterbore with Built-In Pilot (MPN 303-1/2) is used to create a recess in a workpiece so that the head of a 1/2" screw sits flush with or below the surface. Its built-in pilot aligns the tool with an existing pilot hole for accurate, repeatable counterboring in woodworking and metalworking applications.

What are the specifications of the YANKEE Counterbore 303-1/2?

The YANKEE Counterbore 303-1/2 is an oversized built-in-pilot counterbore for 1/2" screws. It has a 1/2 in bore diameter and is 1/32" oversized. The tool is manufactured by YANKEE and is designed for use with a 1/2" screw. It is ideal for applications requiring a precise, flush screw fit.

Where to buy the YANKEE Counterbore 303-1/2 worldwide?

3G Electric supplies the YANKEE Counterbore 303-1/2 to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and a quote. We source genuine YANKEE tools and support your procurement needs across 14 industrial departments.

How to select the correct YANKEE Counterbore for a 1/2" screw?

To select the correct YANKEE Counterbore for a 1/2" screw, match the bore diameter to the screw head size. The YANKEE 303-1/2 features a 1/2 in bore diameter and is 1/32" oversized, providing clearance for the screw head. Always verify the screw's head diameter and the required depth of the counterbore for your specific workpiece material.

Used in

Common applications for YANKEE
Metalworking — YANKEE spiral-flute chucking reamers for finishing holes in steel and aluminum components
Plumbing — YANKEE taper pipe reamers for deburring 3/8 inch and 1-1/2 inch cut pipe ends before threading
HVAC — YANKEE taper pipe reamers for preparing refrigerant and water pipe ends for fitting
Industrial piping — YANKEE taper pipe reamers for smoothing cut pipe interiors in maintenance operations
Machine shop — YANKEE straight-flute chucking reamers for precision hole finishing in ferrous and non-ferrous materials
Maintenance and repair — YANKEE chucking reamers in wire-gauge sizes for on-site hole resizing and repair
Not sure this is the right part? Photo-identify it→

YANKEE Products

3G Electric supplies YANKEE oversized built-in-pilot counterbores. 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 YANKEE

View all YANKEE parts →

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first