Grommet Setting Dies and Application Tools

What Are Eyelet Setting Dies and Application Tools?

Eyelet setting dies and application tools are used to install eyelets, grommets, caps and washer-supported metal accessories in different inner diameter ranges onto fabric, leather, faux leather, bags, footwear, tarpaulins, awnings, tents, banners, vinyl prints and technical textile surfaces.

This category includes not only standard eyelet setting dies, but also eyelet punching dies, standard eyelet setting tools, reverse dies, self-piercing eyelet setting dies, oval eyelet dies, cap application dies and eyelet die systems compatible with different press machines.

Clean and consistent eyelet installation is difficult without choosing the correct die. The real inner diameter, outer diameter, barrel height, washer structure, material type and machine compatibility should be checked together before selecting the die.

Difference Between Eyelet Punching Dies, Standard Setting Tools and Reverse Dies

Tool Type	Function	When to Use
Eyelet Punching Die	Punches the hole where the eyelet will pass through the material.	Used when a pre-hole is required on fabric, leather, tarpaulin, vinyl, tent fabric or technical textiles.
Standard Eyelet Setting Tool	Sets the eyelet and washer into a pre-punched hole.	Used for standard eyelet applications after the hole has been prepared.
Reverse Die	Allows the eyelet to close from the reverse side or with a special closing form.	Used when the back-side appearance, washer structure or application direction is important.
Self-Piercing Eyelet Setting Die	Supports punching and setting in the same application for compatible eyelet systems.	Used with self-piercing eyelets when installation without a separate punching step is required.

In simple terms, a punching die makes the hole, a standard setting tool installs the eyelet, a reverse die is used for special-direction applications, and a self-piercing setting die can support both piercing and setting for compatible eyelet systems.

Choosing Dies by Real Eyelet Measurements

Eyelet dies should not be selected by product number alone. Eyelets that look similar may still differ in real inner diameter, outer diameter, barrel height, washer structure and material type. For English product content and export customers, the actual measurement in millimeters and inches should always be checked before selecting the die.

Eyelet Group	Typical Application	What to Check Before Selecting the Die
Small textile eyelets	Thin textiles, footwear and small accessories	Inner diameter, fabric thickness and hole diameter should be checked.
Small leather and textile eyelets	Textiles, small leather goods and light applications	Check whether a standard die or a self-piercing reverse die is required.
Footwear and bag eyelets	Footwear, bags and textile accessories	Barrel height and material thickness should be evaluated together.
Coin-style and decorative eyelets	Bags, curtains, textiles and coin-style eyelet applications	Cap form and outer diameter should match the die surface.
Medium eyelet systems	Bags, leather, textiles and medium-thickness surfaces	Hole diameter, washer structure and setting tool compatibility should be checked.
Bag and leather accessory eyelets	Bags, leather goods and textile accessories	Standard setting tools and punching dies may need to be evaluated together.
Heavy textile and canvas eyelets	Thicker textiles, canvas, bags and technical fabrics	Barrel height, material thickness and press system are important.
General-purpose eyelet systems around 9.5–10 mm / 0.37–0.39 in inner diameter	Bags, textiles, tarpaulin, leather and general-purpose applications	Standard and stainless steel eyelets in this range should not be assumed to have the same real inner diameter.
Large self-piercing tarpaulin eyelet systems	Tarpaulins, awnings, tents and technical textiles	The need for a standard die, reverse die or self-piercing die should be determined according to the eyelet type.
Large tarpaulin and tent eyelets	Tarpaulins, awnings, tents and tensioning systems	Washer structure, hole diameter, barrel height and press power should be checked together.
Heavy-duty tarpaulin eyelet systems	Truck covers, industrial covers, large awnings and heavy-duty textile systems	Large eyelet dimensions, washer, hole diameter and strong press system should be evaluated together.

When Should a Standard Eyelet Setting Tool Be Used?

A standard eyelet setting tool is used to install an eyelet and washer into a pre-punched hole. In this system, the hole is prepared first, the eyelet is placed into the surface, and then the setting tool closes the eyelet into position.

Standard eyelet setting tools are the most common die group for textile, leather, bag, footwear, tarpaulin and technical textile applications. The real inner diameter, barrel height and washer structure directly affect the correct setting tool selection.

What Is a Reverse Die?

A reverse die is a special die used when the eyelet needs to close from a different direction or when the reverse side of the product must have a more controlled finish.

In some eyelet systems, a reverse die may be required to create a cleaner back-side form or to support the correct application direction in self-piercing systems. Die direction can be especially important in technical textiles, tarpaulins, bags and special accessory production.

What Is a Self-Piercing Eyelet Setting Die?

A self-piercing eyelet setting die is used with compatible eyelet systems where the eyelet can pierce the material and close during the same application. In this structure, the cutting or piercing part of the eyelet passes through the surface during installation.

This system can be practical for suitable textile, vinyl, faux leather and some technical fabric surfaces. However, for thick tarpaulin, multi-layer leather or heavy technical textiles, using a separate punching die may provide a more controlled result.

Eyelet Dies Around 9.5–10 mm / 0.37–0.39 in Inner Diameter

Eyelet dies in the 9.5–10 mm / 0.37–0.39 in inner diameter range are among the most commonly requested die groups. This range is used in textiles, bags, leather, tarpaulin and many general-purpose applications. However, the product number used in Turkish production terminology alone is not enough for correct die selection.

The real inner diameter may differ between standard eyelets and stainless steel eyelets in this range. For this reason, the actual measurement in mm / inch, material, barrel height and setting system should be evaluated together before selecting the die.

Large Self-Piercing Eyelet Dies

Large self-piercing eyelet systems can be used in tarpaulin, awning, tent and technical textile applications. Some eyelets in this group may have a self-piercing structure. In that case, a self-piercing eyelet die or reverse die may be required instead of a standard setting tool.

For large self-piercing eyelet applications, material thickness, the cutting barrel structure of the eyelet, washer use and press system should be checked carefully.

Oval Eyelet Dies

Oval eyelets have a different form from standard round eyelets. Therefore, round eyelet dies should not be used for oval eyelets. A special oval eyelet die is required to close the oval form correctly without deforming it.

Oval eyelets can be used in 1 cm / 0.39 in, 1.5 cm / 0.59 in, 2 cm / 0.79 in, 2.5 cm / 0.98 in and 3 cm / 1.18 in sizes. They are commonly used in tarpaulins, tents, shade systems, caravan equipment, marine products and technical textile applications. Related products can be reviewed under the oval eyelets category.

Stainless Steel Eyelet Dies

Stainless steel eyelets can behave differently from brass or steel eyelets during setting. Due to material hardness, a standard die may not always provide the same result.

When selecting a die for stainless steel eyelets, real inner diameter, outer diameter, barrel height, washer structure and press system should be checked together. Related products can be reviewed under the stainless steel eyelets category.

Tarpaulin, Awning and Tent Applications

In tarpaulin, awning and tent applications, eyelets may be exposed to higher pulling forces. For this reason, not only the eyelet dimension but also surface thickness, washer structure and barrel height are important.

Especially for large tarpaulin and tent eyelet systems, hole diameter, barrel height, washer form and press power should be evaluated together.

Choosing Eyelet Dies by Press System

Hand-Setting Eyelet Dies

Hand-setting dies can be used for low-volume applications, sample production and small workshops. Since the application force depends on the user, they may not always provide the same consistency in mass production.

Eyelet Dies Compatible with Hand Presses

Hand presses are widely used manual press systems in workshops. Compatible die connection should be checked before using them for eyelets, snaps, rivets and similar accessories.

Eyelet Dies Compatible with Impact Presses

Impact presses can be preferred by workshops that need a more controlled application. Correct die selection and proper pressure are important for balanced eyelet closing.

Eyelet Dies Compatible with Electric and Pneumatic Machines

Electric and pneumatic machines are preferred for high-volume production. In these systems, die connection size, machine standard and eyelet dimension should be compatible. For mass production systems, the mounting machines and hand tools category can be reviewed.

Common Mistakes in Eyelet Application

• Selecting a die only by the Turkish production number
• Confusing a standard die with a self-piercing die
• Using a standard setting tool where a reverse die is required
• Thinking that punching dies and setting tools are the same product
• Using a round die for oval eyelets
• Using a standard die for stainless steel eyelets without checking real measurements
• Punching the hole too large or too small
• Ignoring barrel height
• Placing the washer in the wrong direction
• Using an incompatible press system

Eyelet Die Buying Guide

Information to Check	Why It Matters
Actual eyelet measurement	It gives the first real reference for die selection.
Real inner diameter	Required for hole diameter and die centering compatibility.
Outer diameter	Affects how the die supports the outer eyelet form.
Barrel height	Directly affects how the eyelet closes.
Standard, reverse or self-piercing structure	Determines the correct setting tool type.
Washer or non-washer use	Affects the lower die form and closing structure.
Eyelet material	Brass, stainless steel or steel eyelets can behave differently during setting.
Press system	Required for die connection standard and machine compatibility.

Frequently Asked Questions

What does a standard eyelet setting tool do?

It is used to set the eyelet and washer into a pre-punched hole.

What is a reverse die?

A reverse die is used when the eyelet needs to close in a special direction or when the back-side form needs to be controlled.

What is a self-piercing eyelet setting die?

It is a die that supports piercing and setting in the same application for compatible self-piercing eyelet systems.

Are punching dies and setting tools the same?

No. A punching die makes the hole, while a setting tool installs the eyelet.

Which die is required for eyelets around 9.5–10 mm / 0.37–0.39 in inner diameter?

The real inner diameter, outer diameter and barrel height should be checked. Standard and stainless steel eyelets in this range may require different die compatibility.

Which die is used for large self-piercing eyelets?

A self-piercing compatible reverse die or special die may be required instead of a standard setting tool.

Which tool is required for heavy-duty tarpaulin eyelets?

For heavy-duty tarpaulin eyelets, large eyelet dimensions, washer, hole diameter and a strong press system should be evaluated together.

Can oval eyelets be applied with a standard round die?

No. Oval eyelets require a special oval die.

Why does an eyelet close unevenly?

It may happen because of an incorrect die, wrong hole diameter, incompatible press system or uneven pressure.

Why does an eyelet stay loose?

The hole may be too large, the die may be incompatible, or the applied pressure may be insufficient.