All types of high quality bolts & nuts with high safety rate. Made in Japan. Manufactured by Hardlock & Trusco (u-bolt)

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$10.00 - $100.00 / Pieces | 1 Piece/Pieces (Min. Order)
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All types of high quality bolts & nuts with high safety rate. Made in Japan. Manufactured by Hardlock & Trusco (u-bolt)

Product Description

Producing a nut that never loosens! Safety is power!

The Hard Lock® Nut, Born in Japan, Raised in the World. 

Hard Lock manufactures and sells nuts that do not loosen, as well as other hardware that plays

a vital role in creating safety even in places out of the sight.The anti-loosening Hard Lock Nut HL (Left) and Hard Lock Bearing Nut HLB® (Right) 

employ the wedge principle to achieve a powerful locking energy not affected by shock or vibration. 

Applications Of  The HL® (Left)
Railroads, expressways, bridges, buildings, civil engineering projects, steel towers, railway cars, transportation machines, shipbuilding, atomic power plants, dams, steel-making machinery, metal presses, rock crushers, and other production equipment in major industries

Applications Of  The HLB® (Right)

Operational gears, machine tools, bearings for main shafts, bearings for drive components, welding robots, indices, concrete pump trucks, reduction gears, transmissions, general-purpose pumps, clutch brakes, large dump trucks, forklifts, balancers, aerial vehicles, service trucks, piston pumps, lifts, crushers, amusement equipment...


Applying the Wedge Principle with Two Nuts

Two differently shaped nuts for each bolt: one concave, the other convex. The concave nut (the upper nut) has a perfect spherical concavity, whereas the convex nut (the lower nut) has a small crank, with a thin wedge on one side and a thick wedge on the other. 


Top-level equipment for comprehensive inspection tests

During the inspection tests, we measure the height of nuts and the inner diameter of the screws to the exact and accurate extent of one thousandth of a millimeter. This strict inspection system is the origin or the worldwide trust we have gained with our prodicts.



Low Environmental Burden. Trivalent Chromate Products


Product No.B722-0830




 *Strength Classification: 4.8 
*Dimensions ( M M) D × L: M8 × 30 
*Weight:178.6 g

* Material: soft steel wire rod (SWCH) 

 *Strength Classification: 4.8 
*Dimensions ( M M) D × L:  M5×30
*Weight:214.3 g

* Material: soft steel wire rod (SWCH) 





<Answer> : We are a Japanese trading company, with great experience in the industrial product and machinery business. We have developed a professional skilled and dedicated service to customers for more than 93 years.


<Question(2)> : What can TOKIWA provide?

<Answer> : We mainly deal with Rubber Hose, PVC Hose, V-Belt, Timing Belt, Roller Chain, PVC Tarpaulin, Bearing, Tape, Hand Tools, Utility Knife, Packing, Rubber Sheet, Film…etc.


<Question(3)> : How is your service quality?

<Answer> : We reply to inquiries on the first 24 hours. Fast delivery service after payment confirmation.


<Question(4)> : Can you provide samples?

<Answer> : Yes, product sample inquiries are warmly welcomed! You only need to pay for the shipping.


<Question(5)> : How can I send a request for quotation?

<Answer> : You just need to let us know the product number/model & quantities you want.


<Question(6)> : What is your MOQ (Minimum Order Quantity)?

<Answer> : We do not have MOQ for our products. You can order even just 1 piece!


<Question(7)> : How can I pay?

<Answer> : We accept L/C, T/T and PayPal.


<Question(8)> : How about your Inspection & Packaging?

<Answer> : We will do inspection before packaging. Standard Export Packaging.


<Question(9)> : How about your shipment?

<Answer> : We can deliver both by air and sea. We use a wide range of companies and services such as EMS, FedEx, UPS, DHL, TNT, Less than Container Load, 20ft & 40ft Container.


<Question(10)> : I want to buy one of your products, but I don't speak Japanese. Can you speak English?

<Answer> : Yes, of course. In Tokiwa, our experienced multilingual trading team 
can attend your request and communicate not only in Japanese, but in English, Chinese, French and Spanish.


Company Information

Please, send an inquiry about the products you are interested in and we will give you more details. We will do our best to satisfy your demand. Looking forward to hearing from you!


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