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

YANKEE Counterbore with Built-In Pilot: For 5/16" Screw, 1/32" Oversized - Oversized Built-in-Pilot Counterbores
YANKEEOversized Built-in-Pilot Counterbores

YANKEE Counterbore with Built-In Pilot: For 5/16" Screw, 1/32" Oversized

The YANKEE Counterbore with Built-In Pilot is an oversized built-in-pilot counterbore designed for use with a 5/16" screw. It features a 1/32" oversized design and a 5/16" bore diameter, identified by manufacturer…

SKU 3G-OTH-184266

Also listed as: 303516 · 303 5 16 · 303-5-16

Brand
YANKEE
Item
Counterbore with Built-In Pilot: For 5/16" Screw, 1/32" Oversized
Category
Oversized Built-in-Pilot Counterbores
Available to Order
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
303-5/16
Bore Dia
5/16 in
Oversized
1/32"
Counterbore Type
Oversized

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 is an oversized built-in-pilot counterbore designed for use with a 5/16" screw. It features a 1/32" oversized design and a 5/16" bore diameter, identified by manufacturer part number 303-5/16.

Frequently Asked Questions

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

A YANKEE Counterbore with Built-In Pilot creates a flat-bottomed recess for a screw head, allowing it to sit flush with or below the workpiece surface. The built-in pilot aligns the counterbore with an existing hole, and the 1/32" oversized design provides clearance for a 5/16" screw.

What are the specifications of the YANKEE Counterbore 303-5/16?

The YANKEE Counterbore 303-5/16 has a 5/16 in bore diameter and is 1/32" oversized for use with a 5/16" screw. It is an oversized built-in-pilot counterbore type, manufactured by YANKEE under part number 303-5/16.

Where to buy a YANKEE Counterbore with Built-In Pilot worldwide?

3G Electric supplies the YANKEE Counterbore with Built-In Pilot (MPN 303-5/16) worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this oversized counterbore to your facility, regardless of location.

How to select the correct YANKEE Counterbore for a 5/16" screw?

Select a YANKEE Counterbore with a bore diameter matching your screw size—here 5/16 in—and choose the oversized option (1/32") if you need extra clearance for the screw head. Ensure the built-in pilot diameter aligns with your pre-drilled hole for accurate centering.

Used in

Common applications for YANKEE
General machining — YANKEE straight-flute chucking reamers for finishing holes in steel and aluminum parts.
Tool and die making — YANKEE spiral-flute hand reamers for precise sizing of die cavities and bushings.
Maintenance repair — YANKEE counterbores with built-in pilots for creating recesses for screw heads in equipment housings.
Automotive manufacturing — YANKEE chucking reamers with MT1 shanks for reaming engine block bolt holes.
Aerospace component production — YANKEE left-hand spiral-flute reamers for finishing holes in titanium alloys.
Metal fabrication — YANKEE straight-flute reamers for enlarging pilot holes in structural steel assemblies.

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

Compatible alternatives & equivalents

Cross-referenced by specification & description
YANKEE Counterbore with Built-In Pilot: For 5/8" Screw, 1/32" Oversized, 5/8 in Bore Dia (MPN 303-5/8)
YANKEE
YANKEE Counterbore with Built-In Pilot: For 5/8" Screw, 1/32" Oversized, 5/8 in Bore Dia (MPN 303-5/8)
Oversized built-in-pilot counterbore for use with a 1/4" screw. Features a 1/32" oversized design and a 1/4" bore diameter. Used to create a flat-bottomed recess for screw heads in woodworking, metalworking, and general fabrication
YANKEE
Oversized built-in-pilot counterbore for use with a 1/4" screw. Features a 1/32" oversized design and a 1/4" bore diameter. Used to create a flat-bottomed recess for screw heads in woodworking, metalworking, and general fabrication
Oversized built-in-pilot counterbore with 1 in bore diameter, 1/32" oversized. Designed for creating flat-bottomed recesses for 1" screw heads, with the pilot aligning the bore to an existing hole. Suitable for use in wood or metal
YANKEE
Oversized built-in-pilot counterbore with 1 in bore diameter, 1/32" oversized. Designed for creating flat-bottomed recesses for 1" screw heads, with the pilot aligning the bore to an existing hole. Suitable for use in wood or metal
Oversized built-in-pilot counterbore for #5 screws. Features a 1/32" oversized design with a 13/64-inch bore diameter. The built-in pilot aligns the tool for precise counterboring, creating a flat-bottomed recess for screw heads in industrial workpieces
YANKEE
Oversized built-in-pilot counterbore for #5 screws. Features a 1/32" oversized design with a 13/64-inch bore diameter. The built-in pilot aligns the tool for precise counterboring, creating a flat-bottomed recess for screw heads in industrial workpieces
YANKEE Counterbore with Built-In Pilot: For 1/4" Screw, 1/64" Oversized, 17/64 in Bore Dia (MPN 302-1/4)
YANKEE
YANKEE Counterbore with Built-In Pilot: For 1/4" Screw, 1/64" Oversized, 17/64 in Bore Dia (MPN 302-1/4)
YANKEE Counterbore with Built-In Pilot: For 1/2" Screw, 1/32" Oversized, 1/2 in Bore Dia (MPN 303-1/2)
YANKEE
YANKEE Counterbore with Built-In Pilot: For 1/2" Screw, 1/32" Oversized, 1/2 in Bore Dia (MPN 303-1/2)

More from YANKEE

View all YANKEE parts
This YANKEE counterbore features a built-in pilot for alignment and a 1/32" oversized design to provide clearance for 3/8" screw heads. The 3/8" bore diameter creates a flat-bottomed recess in wood or metal. Suitable for general counterboring applications in woodworking, cabinetry, and fabrication
YANKEE
This YANKEE counterbore features a built-in pilot for alignment and a 1/32" oversized design to provide clearance for 3/8" screw heads. The 3/8" bore diameter creates a flat-bottomed recess in wood or metal. Suitable for general counterboring applications in woodworking, cabinetry, and fabrication
Oversized built-in-pilot counterbore with 7/8 in bore diameter and 1/32" oversized design. Used for creating recessed holes to accommodate screw heads in metalworking, woodworking, and assembly applications where accurate alignment is required
YANKEE
Oversized built-in-pilot counterbore with 7/8 in bore diameter and 1/32" oversized design. Used for creating recessed holes to accommodate screw heads in metalworking, woodworking, and assembly applications where accurate alignment is required
Oversized counterbore with built-in pilot for #5 screws. Bore diameter 13/64 in, oversized by 1/64 in. Used to create flat-bottomed recesses for screw heads in metal or wood, ensuring flush assembly
YANKEE
Oversized counterbore with built-in pilot for #5 screws. Bore diameter 13/64 in, oversized by 1/64 in. Used to create flat-bottomed recesses for screw heads in metal or wood, ensuring flush assembly
Oversized counterbore with built-in pilot for #4 screws. Bore diameter 13/64 in, oversized by 1/64 in. Used in machining operations to create a flat-bottomed recess for screw heads, ensuring flush assembly in metalworking, woodworking, and general manufacturing tasks
YANKEE
Oversized counterbore with built-in pilot for #4 screws. Bore diameter 13/64 in, oversized by 1/64 in. Used in machining operations to create a flat-bottomed recess for screw heads, ensuring flush assembly in metalworking, woodworking, and general manufacturing tasks
Oversized built-in-pilot counterbore for #8 screws. Features a 1/32" oversized design with a 13/64 in bore diameter. Used for creating flat-bottomed recesses for screw heads in metalworking, woodworking, and general manufacturing applications
YANKEE
Oversized built-in-pilot counterbore for #8 screws. Features a 1/32" oversized design with a 13/64 in bore diameter. Used for creating flat-bottomed recesses for screw heads in metalworking, woodworking, and general manufacturing applications
Oversized built-in-pilot counterbore for #10 screws. Features a 7/8 in bore diameter with 1/64" oversized bore. Used to create flat-bottomed recesses for screw heads in woodworking and metalworking applications
YANKEE
Oversized built-in-pilot counterbore for #10 screws. Features a 7/8 in bore diameter with 1/64" oversized bore. Used to create flat-bottomed recesses for screw heads in woodworking and metalworking applications
This oversized built-in-pilot counterbore from YANKEE has a bore diameter of 7/16 in and is oversized by 1/64". It is designed for creating flat-bottomed recesses for screw heads in woodworking, metalworking, and general fabrication applications
YANKEE
This oversized built-in-pilot counterbore from YANKEE has a bore diameter of 7/16 in and is oversized by 1/64". It is designed for creating flat-bottomed recesses for screw heads in woodworking, metalworking, and general fabrication applications
Oversized counterbore with built-in pilot for aligning the tool during operation. Designed for use with 5/8" screws, featuring a 1/64" oversized bore diameter of 5/8 in. Creates a flat-bottomed recess for screw heads in metal or wood
YANKEE
Oversized counterbore with built-in pilot for aligning the tool during operation. Designed for use with 5/8" screws, featuring a 1/64" oversized bore diameter of 5/8 in. Creates a flat-bottomed recess for screw heads in metal or wood