ウィルコ Product Lineup

This is a general-purpose (Type 2) product that meets JIS standards. It is said that the spring washer exerts a repulsive force that presses the head of the screw and the mating material together, making it difficult for the screw and nut to come loose. It is also referred to as a spring washer. This product is compliant with EU-RoHS regulations.

• nut

This is a washer for pan head screws and round pan head screws. It is also called a serrated washer. When using pan head screws, it is necessary to perform "sagging processing" on the counterpart material, but by using a rosette washer, pan head screws can be used without processing, thus eliminating that step in the manufacturing process. It can also be used in combination with round pan head screws for decorative purposes. This is a rosette washer made from stainless steel through cutting processing. It is compliant with EU-RoHS standards.

• nut

When the hole diameter of the material being fastened is larger than that of the screw, it can stabilize the screw head. By increasing the surface area of the screw head, the adhesion to the material can be enhanced. It is also referred to as a washer or flat washer. It is compliant with EU-RoHS standards.

• nut

When the hole diameter of the material being fastened is larger than that of the screw, it can stabilize the screw head. By increasing the surface area of the screw head, the adhesion to the material can be enhanced. It is also referred to as a washer or flat washer. It is compliant with EU-RoHS standards.

• nut

*Special tools are required for insertion and extraction. This is an insert nut for reinforcing female threads, which is installed by tightening like a screw. Since the insert is formed by cutting processing, unlike conventional coil-type insert nuts, there is no pitch jump that often occurs during installation, and there is no change in shape even when bolts are attached or detached. A separate, sold separately, special tool for the insert (with a slot) is required for installation. It is compliant with EU RoHS standards.*

• nut

*Special tools are required for insertion and removal. This is an insert nut for reinforcing female threads, which is installed by tightening like a screw. Since the insert is formed by cutting processing, unlike conventional coil-type insert nuts, it does not experience pitch jumping during installation, and there is no change in shape even when bolts are attached or detached. The installation requires a separately sold special tool for the insert. It is compliant with EU RoHS standards.*

• nut

This is a bag-shaped nut that covers one side of a JIS hex nut type 2 with a hemispherical shape. After assembly, it can cover the threaded part of the bolt, ensuring safety. It is also suitable for decorative purposes. It is compliant with EU-RoHS standards.

• nut

This is a hex nut according to DIN standards. It is compliant with EU-RoHS.

• nut

This is a nut with a flange that is wider than the hexagonal part and is integrally molded. Compared to a hex nut, it has a larger seating surface, which can be expected to provide a loosening prevention effect. The serration applied to the seating surface enhances the loosening prevention effect. It is compliant with EU RoHS standards.

• nut

This is a nut with a flange that is wider than the hexagonal part and is integrally molded. Compared to a hex nut, it has a larger seating surface, which can be expected to provide anti-loosening effects. It is compliant with EU-RoHS standards.

• nut

This is a type of JIS annex standard (low-height double-sided) in three variations. It can be combined with JIS type 1 or type 2 hex nuts and used as a double nut. It is compliant with EU-RoHS.

• nut

This is a type of JIS annex standard (double-sided) and is compliant with EU-RoHS.

• nut

This is a Type 1 JIS Annex Standard (single-sided) product. It is compliant with EU-RoHS.

• nut

This is a type of JIS annex standard, single-sided. It is compliant with EU-RoHS.

• nut

This is a hexagonal columnar spring post designed to use a tension spring in a groove. It is compliant with EU-RoHS standards.

• bolt

This is a cylindrical spring post designed to use a tension spring in a groove. It is compliant with EU-RoHS standards.

• bolt

This is a cylindrical spring post used by hanging a tension spring on a hole. It is compliant with EU-RoHS standards.

• bolt

This is a unique specification set screw with a slotted design that adds smaller sizes to JIS standard products. It is used when pressing the screw tip against the counterpart material to secure it. The pointed screw tip bites into the counterpart material for fixation. It is also called a grub screw. It is compliant with EU-RoHS standards.

• bolt

This is a unique standard set screw with a slotted design that adds smaller sizes to JIS standard products. It is used when the screw tip is pressed against the mating component to secure it. Due to its flat tip, it is suitable for applications where you do not want to scratch the mating component. It is also referred to as a grub screw. It complies with EU-RoHS standards.

• bolt

This is a screw with a head that has the same shape as the threaded part and features a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). It is used when the screw tip is pressed against the mating part to secure it. Due to its flat tip, it is suitable for applications where you do not want to damage the mating part. It is also referred to as a "hollow set" or "set screw." It is compliant with EU-RoHS standards.

• bolt

This is a screw with a head that has the same shape as the threaded part and features a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). It is used when the screw tip is pressed against the counterpart to secure it. Due to its flat tip, it is suitable for applications where you do not want to damage the counterpart. It is also known as a hollow set screw or grub screw. It is compliant with EU-RoHS standards.

• bolt

This is a screw with a head that has the same shape as the threaded part and features a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). It is used when pressing the tip of the screw against the mating part to secure it. Because the tip of the screw is recessed, it may leave a circular mark on the mating part. It is also referred to as a hollow set or set screw. It is compliant with EU-RoHS standards.

• bolt

This is a screw with a head that has the same shape as the threaded part and features a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). It is used when the tip of the screw is pressed against the counterpart to secure it. Because the tip of the screw is recessed, it may leave a circular mark on the counterpart. It is also referred to as a hollow set or set screw. It is compliant with EU-RoHS standards.

• bolt

Tighten using a Torx wrench or similar tool. Torx is a registered trademark of Acument Intellectual Properties, LLC. It is compliant with EU-RoHS standards.

• bolt

This is a bolt with a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). This bolt is suitable for tightening in narrow spaces where it is difficult to work with wrenches or spanners designed for hex bolts. It prevents screws from falling out or getting lost. It is ideal for securing protective covers or inspection covers that are frequently installed and removed. Even in tight spaces, it fits neatly and smartly, making it perfect for portable devices and slim equipment. The smooth finish enhances safety by preventing snagging and skin injuries. The screw head is inconspicuous, making it popular for products that prioritize design. Since countersinking is not required, it is recommended when you want to reduce processing costs. It complies with CE marking requirements for the products being installed. By narrowing the neck section, it has a structure that prevents the screw part from snagging on the cover and falling off when loosened.

• bolt

This is a bolt with a hexagonal hole. It is tightened using a hexagonal rod-shaped wrench (hex key). This bolt is suitable for tightening in narrow spaces where it is difficult to work with wrenches or spanners designed for hex bolts. The height of the head is positioned between a super low head and a standard cap bolt. It is recommended for those looking for a screw that requires a low head while not compromising on strength. It prevents screws from falling out or getting lost. It is ideal for securing protective covers or inspection covers that are frequently installed and removed. It complies with the CE marking requirements for the products being installed. By narrowing the neck portion, it has a structure that prevents the screw part from catching on the cover and falling off when loosened.

• bolt

This is a bolt with a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). This bolt is suitable for tightening in narrow spaces where it is difficult to work with a spanner or wrench for hex bolts. It prevents the screw from falling off or getting lost. It is ideal for securing protective covers or inspection covers that are frequently installed and removed. It is compatible with CE marking for the products being installed. By making the neck portion thinner, it has a structure that prevents the screw part from getting caught on the cover and falling when loosened.

• bolt

This is a bolt with a hexagonal hole. It is tightened using a hexagonal rod-shaped wrench (hex key). It is suitable for tightening in narrow spaces where it is difficult to work with a spanner or wrench designed for hex bolts. It has a lower head and a wider width compared to a cap bolt. Its head has a rounded shape like a button, making it recommended for places where you don't want to draw attention to the usage area. In addition to cap bolts, we have increased the range of widths available for selection based on applications.

• bolt

This is a bolt with a smaller head outer diameter than a standard hex socket cap bolt. It is ideal for areas where the head outer diameter of standard cap bolts is too large to allow for tightening. It is compliant with EU-RoHS standards.

• bolt

This is a hex socket bolt with a lower head and smaller outer diameter compared to JIS standards. It is tightened using a hexagonal rod wrench (hex key). This bolt is suitable for tightening in narrow spaces where it is difficult to work with a spanner or wrench. It is compliant with EU-RoHS standards.

• bolt

This is a low-profile hex socket bolt. It is tightened using a hexagonal rod wrench (hex key). Even in narrow spaces, it fits neatly and smartly, making it ideal for portable devices and slim equipment. The smooth finish enhances safety by preventing snagging and skin injuries. The inconspicuous screw head is also popular for products that prioritize design. Since counterboring is not required, it is recommended when you want to reduce processing costs. It is compliant with EU-RoHS standards.

• bolt

This is a hexagon socket bolt with a lower head and smaller outer diameter compared to JIS standards. It is tightened using a hexagonal rod wrench (hex key). This bolt is suitable for tightening in narrow spaces where it is difficult to work with a spanner or wrench. It is compliant with EU-RoHS standards.

• bolt

This is a hexagon socket bolt with a lower head compared to JIS standards. It is tightened using a hexagonal rod wrench (hex key). It is suitable for tightening in narrow spaces where it is difficult to work with a spanner or wrench. It is compliant with EU-RoHS standards.

• bolt

It is a hex socket bolt with a flat top and a conical-shaped seat. It is used when you do not want the head of the screw to protrude. The material being tightened needs to be countersunk. It is also called a cup cap. It is compliant with EU-RoHS standards.

• bolt

The hexagon socket bolt comes with a spring washer and a flat washer already incorporated. Since they are pre-assembled, it reduces the time required for the assembly process. The presence of the washers also helps prevent damage to the seating surface of the mating material.

• bolt

The hexagon socket bolt comes with a spring washer and a flat washer already incorporated. Since they are pre-assembled, it reduces the time required for the assembly process. The presence of the washers also helps prevent damage to the seating surface of the counterpart material.

• bolt

The hexagon socket bolt is equipped with a spring washer. Since it is already assembled, it reduces the time required for the assembly process. The presence of the washer also prevents damage to the seating surface of the counterpart material. It is compliant with EU-RoHS standards.

• bolt

This is a hexagon socket bolt with a Nylok treatment applied to the threaded part. Nylok creates a strong friction joint on the threaded part due to the elastic rebound force of the special nylon that is adhered to it, providing a permanent locking function against vibrations and impacts. It exhibits exceptional locking effectiveness in areas with frequent repeated use. Nylok is a registered trademark of Nylok LLC. What is Nylok: Nylok is a reliable locking treatment technology that permanently adheres special nylon to the threaded part. The principle of Nylok's locking mechanism is that when the screw is tightened, the elastic rebound force of the adhered special nylon generates a strong friction joint across the entire threaded part on the opposite side of the processed area, demonstrating a permanent locking function against vibrations and impacts. It shows outstanding locking effectiveness in areas with frequent repeated use. This offers advantages not found in locking nuts that deform the threaded part or in products that use adhesive for locking. This product complies with EU-RoHS standards.

• bolt

This is a bolt with a hexagonal hole. It is tightened using a hexagonal rod wrench (hex key). It is suitable for tightening in narrow spaces where it is difficult to work with a spanner or wrench. It is also called a cap screw or socket screw. It is compliant with EU-RoHS standards.

• bolt

The head shape is hexagonal, allowing for tightening with tools such as wrenches and spanners. It can be tightened more securely than screws with a cross hole. Since the washer does not come off the screw, it saves the trouble of setting the washer, thereby improving work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

• bolt

The head shape is hexagonal, and it can be tightened using tools such as wrenches and spanners. It can be tightened more securely than screws with a cross hole. Since the washer does not come off the screw, it eliminates the hassle of setting the washer, thereby improving work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

• bolt

The head shape is hexagonal, and it can be tightened using tools such as wrenches and spanners. It can be tightened more securely than screws with a cross hole. It is compliant with EU-RoHS standards.

• bolt

The head has a hexagonal shape with a cross hole. It can be tightened using either a screwdriver, spanner, or wrench. The washer does not come off the screw, which eliminates the hassle of setting the washer and improves work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

• bolt

The head has a hexagonal shape with a cross hole. It can be tightened using either a screwdriver, a spanner, or a wrench. The washer does not come off the screw, which saves the hassle of setting the washer and improves work efficiency. It is also referred to as a Sems screw. It is compliant with EU-RoHS standards.

• bolt

The head has a hexagonal shape with a cross hole. It can be tightened using either a Phillips screwdriver or a wrench. It is compliant with EU RoHS standards.

• bolt