I need to use my mayhew 66000 set to make 7/16" id x 3/4" od gaskets. can i buy a 7/16" punch to fit the inner, threaded mount?

Maybe. The 7/16 punch is available separately (I searched for "mayhew 7/16"). Not sure if the 7/16 and 3/4 punches can be used together. It depends on the size range. Punches are in different size ranges depending on where they affix to the punch body. Any punch can be used with one from the next size range up.

If purchased here is the manufacturer warranty valid for defects in materials and workmanship?

Contact the manufacturer, I'm sure they will help you

Does the punch size refer to the diameter of the hole made or the diameter of the discs removed from the hollow punch?

It refers to the size hole it makes

Pro 66000 1/8-Inch to 1-3/16-Inch Imperial SAE Hollow Punch Set, 16-Piece

Product ID: 183644224

Details

Brand
Mayhew
Colour
Black
Hole count
1
Item weight
2 Pounds
Material
Metal

📏16 precision sizes

⚙️dual cutting heads

🛠️durable metal build

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15326194₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛠️ Punch Perfect Circles, Every Time — Join the Pro League!

TRUSTED LEGACY - Since 1856, Mayhew tools have been the go-to for pros who demand reliability and precision every time.
DOUBLE THE IMPACT - Dual cutting heads let you create perfect concentric circles in a single strike—save time and effort.
ORGANIZED READY - Comes in a sleek plastic case for easy storage and quick access—because your workflow deserves no downtime.
PRECISION IN EVERY PUNCH - 16 hollow punches from 1/8" to 1-3/16" cover all your gasket and washer needs with exact sizing.
VERSATILE MATERIAL MASTERY - Effortlessly punch through cloth, vinyl, leather, light sheet metal, and gasket materials with professional-grade accuracy.

The Mayhew Pro 66000 16-piece Hollow Punch Set offers a comprehensive range of 1/8" to 1-3/16" punches designed for precision cutting in softer materials like leather, vinyl, and light sheet metal. Featuring dual cutting heads for concentric circles and housed in a durable plastic case, this manual metal toolset combines professional-grade quality with a legacy of dependability trusted since 1856.

Specifications

ASIN	B002GKJ20Q
Best Sellers Rank	592,960 in DIY & Tools ( See Top 100 in DIY & Tools ) 944 in Hole Punches (DIY & Tools)
Brand	Mayhew
Colour	Black
Country Of Origin	China
Customer Reviews	4.9 out of 5 stars 84 Reviews
Hole Count	1
Hole count	1
Included Components	16 PC Hollow Punch Set (SAE)
Item Type Name	16 PC Hollow Punch Set (SAE)
Item Weight	2 Pounds
Item weight	2 Pounds
Manufacturer	Mayhew
Material	Metal
Operation Mode	Manual
Operation mode	Manual
Pin Hole Diameter	3.18 Millimeters
Sheet Count	16
UPC	784497057302 045256660004 779975285728
Unit Count	1.0 count

Reviews

C**W

Five Stars

27.03.2018

K**R

Makes a perfect hollow-center gasket in one strike--most of the time.

3.04.2020

J**S

Awesome purchase

26.01.2020

J**F

Can punch out washers using two dies simultaneously

18.07.2025

G**S

Worth every penny

28.10.2020

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Smooth transaction and product arrived in perfect condition.

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15326194₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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1 month ago

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