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What's New

2023/08/17

Information

An announcement of recovery from the website server error
2022/09/20

Information

Announcement of the opening of the “U-TOWN” FUJILOK U-NUT and FINE U-NUT product information site

List of news

FAQ

Get answers to frequently asked questions

Products

Q.01: Does the FUJILOK U-NUT have a part number?
A.01: The FUJILOK U-NUT does not have a part number.
Please include size, shape, material, and surface treatment when ordering or making inquiries.
Q.02: Can you make sizes that are not in your catalogs?
A.02: Please contact us so that we can consider how to deal with it.
For examples of special shapes, please see "Special Products" under Product Information.
Contact us here　
Special Products are here　
Q.03: Can the "FINE U-NUT" be tightened with a hook wrench?
A.03: Yes, it can be tightened with a hook wrench. (But it will not be possible to measure prevailing torque.)
FINE U-NUT dedicated tightening tools are also available for sizes M10 to M100.
The dedicated tightening tool is here　
Q.04: Do I need a special tool to tighten the FUJILOK U-NUT?
A.04: You do not need any particular tool to tighten the FUJILOK U-NUT.
You can use the same tools you would use for general nuts.
Q.05: Please tell me the dimensions of the FINE U-NUT dedicated tightening tool.
A.05: Please check our dimension tables.
Dimensional charts can be found here.

Q.01 Does the FUJILOK U-NUT have a part number?	A.01 The FUJILOK U-NUT does not have a part number. Please include size, shape, material, and surface treatment when ordering or making inquiries.
Q.02 Can you make sizes that are not in your catalogs?	A.02 Please contact us so that we can consider how to deal with it. For examples of special shapes, please see "Special Products" under Product Information. Contact us here　 Special Products are here
Q.03 Can the "FINE U-NUT" be tightened with a hook wrench?	A.03 Yes, it can be tightened with a hook wrench. (But it will not be possible to measure prevailing torque.) FINE U-NUT dedicated tightening tools are also available for sizes M10 to M100. The dedicated tightening tool is here
Q.04 Do I need a special tool to tighten the FUJILOK U-NUT?	A.04 You do not need any particular tool to tighten the FUJILOK U-NUT. You can use the same tools you would use for general nuts.
Q.05 Please tell me the dimensions of the FINE U-NUT dedicated tightening tool.	A.05 Please check our dimension tables. Dimensional charts can be found here.

Surface Treatments

Q.06: What kind of surface treatments are available for the "FUJILOK U-NUT"?
A.06: We have included this information on the product detail page for the FUJILOK U-NUT.
The main types of surface treatment are electrogalvanized, hot-dip galvanized, and GEOMET coatings.
Surface Treatments can be found here.　
Q.07: Is there a surface treatment for the "FUJILOK U-NUT" that is hexavalent chromium-free?
A.07: We can support this with surface treatments such as trivalent chromate yellow, trivalent chromate white, and GEOMET.
Please contact us for more details on the chemicals used in our surface treatments.
Contact us here　
Q.08: What is the standard for hot-dip galvanizing coating for the "FUJILOK U-NUT"?
A.08: HDZ 35 as described in JIS H 8641. (Coating mass of 350 g/㎡ or more)

Q.06 What kind of surface treatments are available for the "FUJILOK U-NUT"?	A.06 We have included this information on the product detail page for the FUJILOK U-NUT. The main types of surface treatment are electrogalvanized, hot-dip galvanized, and GEOMET coatings. Surface Treatments can be found here.
Q.07 Is there a surface treatment for the "FUJILOK U-NUT" that is hexavalent chromium-free?	A.07 We can support this with surface treatments such as trivalent chromate yellow, trivalent chromate white, and GEOMET. Please contact us for more details on the chemicals used in our surface treatments. Contact us here
Q.08 What is the standard for hot-dip galvanizing coating for the "FUJILOK U-NUT"?	A.08 HDZ 35 as described in JIS H 8641. (Coating mass of 350 g/㎡ or more)

Functions and Performance

Q.09: Do I need a washer when using the "FUJILOK U-NUT"?
A.09: The body of the "FUJILOK U-NUT" has a locking function, so there is no need for spring washers.
If there are concerns that nuts will sink into or cause damage to your base material, use the "FSW U-NUT" or the "FUJILOK U-NUT + Flat Washer."
Please consult us if you have any questions.
Contact us here　
Q.10: Can the "FUJILOK U-NUT" be used as a double nut?
A.10: It can be used as a double nut.
In such a case, use a general nut for the lower nut.
If the lower nut is a FUJILOK U-NUT, the load is applied to the clamp, and its functionality cannot be fully demonstrated.
Please consult us if you have any questions.
Contact us here　
Q.11: Is the FUJILOK U-NUT reusable?
A.11: It is reusable.
The number of uses will differ according to various conditions.
Please consult us if you have any questions.
Contact us here　
Q.12: What is the heat resistance of "FUJILOK U-NUT"?
A.12: It depends on the operating conditions, but as a guideline, the FUJILOK U-NUT can be used in temperatures of up to 250°C to 300°C.
Q.13: Please tell me the tightening torque of the "FUJILOK U-NUT."
A.13: Please check the reference tightening torque tables on the FUJILOK U-NUT product introduction page.
For products not listed, please contact us specifying the shape, dimensions, material, surface treatment, etc.
Contact us here

Q.09 Do I need a washer when using the "FUJILOK U-NUT"?	A.09 The body of the "FUJILOK U-NUT" has a locking function, so there is no need for spring washers. If there are concerns that nuts will sink into or cause damage to your base material, use the "FSW U-NUT" or the "FUJILOK U-NUT + Flat Washer." Please consult us if you have any questions. Contact us here
Q.10 Can the "FUJILOK U-NUT" be used as a double nut?	A.10 It can be used as a double nut. In such a case, use a general nut for the lower nut. If the lower nut is a FUJILOK U-NUT, the load is applied to the clamp, and its functionality cannot be fully demonstrated. Please consult us if you have any questions. Contact us here
Q.11 Is the FUJILOK U-NUT reusable?	A.11 It is reusable. The number of uses will differ according to various conditions. Please consult us if you have any questions. Contact us here
Q.12 What is the heat resistance of "FUJILOK U-NUT"?	A.12 It depends on the operating conditions, but as a guideline, the FUJILOK U-NUT can be used in temperatures of up to 250°C to 300°C.
Q.13 Please tell me the tightening torque of the "FUJILOK U-NUT."	A.13 Please check the reference tightening torque tables on the FUJILOK U-NUT product introduction page. For products not listed, please contact us specifying the shape, dimensions, material, surface treatment, etc. Contact us here

Availability and Pricing

Q.14: Please tell me the price of the "FUJILOK U-NUT."
A.14: Please contact the trading company handling screws that you have business with for this information.
If you are unsure, please contact us by specifying the shape, dimensions, material, surface treatment, etc.
Major retailers are here　
Q.15: Please tell me the price of the "FINE U-NUT."
A.15: Please contact the trading companies handling bearings, tools, and screws that you have business with for this information.
If you are unsure, please contact us by specifying the parts number.
Major retailers are here

Q.14 Please tell me the price of the "FUJILOK U-NUT."	A.14 Please contact the trading company handling screws that you have business with for this information. If you are unsure, please contact us by specifying the shape, dimensions, material, surface treatment, etc. Major retailers are here
Q.15 Please tell me the price of the "FINE U-NUT."	A.15 Please contact the trading companies handling bearings, tools, and screws that you have business with for this information. If you are unsure, please contact us by specifying the parts number. Major retailers are here

Product Information

Q.16: Do you have product catalogs?
A.16: We have catalogs for each of our products available in PDF format and as digital catalogs.
If you need a physical booklet, please make a request using our inquiry form.
Browse and download our catalogs here　
Contact us here　
Q.17: Do you have CAD data available?
A.17: Yes, we have both 2D and 3D CAD data available.
If you register as a member, you can download this data.
Register and log in here

Q.16 Do you have product catalogs?	A.16 We have catalogs for each of our products available in PDF format and as digital catalogs. If you need a physical booklet, please make a request using our inquiry form. Browse and download our catalogs here　 Contact us here
Q.17 Do you have CAD data available?	A.17 Yes, we have both 2D and 3D CAD data available. If you register as a member, you can download this data. Register and log in here

U-TOWN

Q.18: When registering as a member, I got a message saying, "This email address cannot be used." What should I do?
A.18: You may have previously used the same email address to register an account on our website.
Open the Member Menu in the upper right corner of our website, and access the link with the following text:
*If you have received a message that says, ""This email address cannot be used"" on the registration screen.
*If you forgot your password.
After this, you will enter and submit your email address.
Once this is done, we will send an account password to your email address.
Please use that password to log in.
After logging in, you can then change your membership information and create your preferred password.

Q.18 When registering as a member, I got a message saying, "This email address cannot be used." What should I do?	A.18 You may have previously used the same email address to register an account on our website. Open the Member Menu in the upper right corner of our website, and access the link with the following text: If you have received a message that says, ""This email address cannot be used"" on the registration screen. If you forgot your password. After this, you will enter and submit your email address. Once this is done, we will send an account password to your email address. Please use that password to log in. After logging in, you can then change your membership information and create your preferred password.

Other

Q.19: What is the origin of your mascot Gugu?
A.19: Our mascot was designed by Hiroshi Kurogane, a Japanese comic artist who actively appears on television and in other forms of media.
In Japanese, "gugu" can mean "a burst of strength," and we chose this as the name of our mascot to express "the strength of our products when they are used as fastening nuts."
Here

Q.19 What is the origin of your mascot Gugu?	A.19 Our mascot was designed by Hiroshi Kurogane, a Japanese comic artist who actively appears on television and in other forms of media. In Japanese, "gugu" can mean "a burst of strength," and we chose this as the name of our mascot to express "the strength of our products when they are used as fastening nuts." Here

List of retailers

The following provides information about retailers that sell our products.

Major
FUJILOK U-NUT
retailers

Major
FINE U-NUT
retailers

Business day calender

Our business day calendar