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YANKEE Built-in-Pilot Counterbore, 1 in Bore Dia, 1 in Pilot Dia, MPN 301-7/8 - Built-in-Pilot Counterbores
YANKEEBuilt-in-Pilot Counterbores

YANKEE Built-in-Pilot Counterbore, 1 in Bore Dia, 1 in Pilot Dia, MPN 301-7/8

The YANKEE Counterbore with Built-In Pilot (MPN 301-7/8) is a standard built-in-pilot counterbore designed for 7/8" screws. It features a 1-inch bore diameter and a 1-inch pilot diameter, as specified by the…

SKU 3G-OTH-202253

Also listed as: 30178 · 301 7 8 · 301-7-8

Brand
YANKEE
Item
Built-in-Pilot Counterbore, 1 in Bore Dia, 1 in Pilot Dia, MPN 301-7/8
Part Number
301-7/8
Category
Built-in-Pilot Counterbores
Available to Order
Also known as:301-7/8YANKEE
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Technical Specifications

YANKEE
Manufacturer Part Number
301-7/8
Bore Dia
1 in
Pilot Dia
1 in

Technical Documents

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

Product Description

The YANKEE Counterbore with Built-In Pilot (MPN 301-7/8) is a standard built-in-pilot counterbore designed for 7/8" screws. It features a 1-inch bore diameter and a 1-inch pilot diameter, as specified by the manufacturer.

Frequently Asked Questions

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

The YANKEE Counterbore with Built-In Pilot (MPN 301-7/8) is used to create a flat-bottomed recess for a 7/8" screw head in metal or wood. The built-in pilot aligns the bore with an existing hole, ensuring concentricity. It is commonly applied in machining, tooling, and assembly operations where precise countersinking is required.

What are the specifications of the YANKEE Counterbore 301-7/8?

The YANKEE Counterbore 301-7/8 is a standard built-in-pilot counterbore designed for 7/8" screws. It has a 1-inch bore diameter and a 1-inch pilot diameter. The manufacturer part number is 301-7/8. This tool is suitable for general-purpose countersinking in industrial applications.

Where to buy the YANKEE Counterbore 301-7/8 worldwide?

You can source the YANKEE Counterbore 301-7/8 worldwide through 3G Electric, a global industrial equipment distributor established in 1990. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time; we supply genuine YANKEE tooling to customers globally.

How to select the correct YANKEE Counterbore for a 7/8" screw?

To select the correct YANKEE Counterbore for a 7/8" screw, ensure the bore diameter matches the screw head size and the pilot diameter fits the existing hole. The YANKEE 301-7/8 features a 1-inch bore and 1-inch pilot, designed specifically for 7/8" screws. Always verify the screw head profile and material before ordering.

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
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YANKEE Products

3G Electric supplies YANKEE built-in-pilot counterbores. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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