Features

When using hot-dip galvanized high-strength bolts for building structures, the approval of the Minister of Land, Infrastructure, Transport and Tourism is usually required for each building structure.
However, we have obtained the certification of “Hot-dip galvanized high-strength bolt joint” from the Minister of Land, Infrastructure, Transport and Tourism. Therefore, when using our hot-dip galvanized high-strength bolts (GH bolts) and designing and constructing in accordance with the “design and construction guidelines” and “construction management guidelines”, individual certification for each property is not required. You can use it freely.
Hot-dip galvanized high-strength bolts have the following features.

• The amount of plating adhered is 550 g / ㎡ or more, and it has excellent long-term rust prevention.
• Since the nut is plated after threading, rust prevention on the threaded part is sufficiently ensured.
• The strength of the bolt is highly tough and stable.
• Since the nut is lubricated after plating, the torque coefficient value is stable and the workability by the nut rotation method is excellent.

Mechanical properties of washer

Materials

Characteristics

• Excels in atmospheric corrosion resistance and demonstrated good performance in exposure tests conducted in industrial and coastal industrial zones.
• Excels in delayed fracture resistance.
• Has a stable bolt tension and torque coefficient.
• The weather-resistant coating eliminates on-site treatment.
• Improved proprietary surface treatment technology prevents co-rotation.

Specification

High strength Bolt

High strength weather-resistance TC bolts / Ni type High strength high weather-resistant TC bolts

High strength weather-resistance Hexagon bolts / Ni type High strength high weather-resistant hexagon bolts

Nut and Washer

Nut

Washer

Mechanical Properties

Bolt

Bolt tension of High strength weather-resistant TC Bolt / Ni type High strength High weather-resistant TC Bolt

Power wrench specification for High Strength Weather-resistant TC Bolts / Ni type High Strength High Weather-resistant TC Bolts

Packing Numbers

High Strength Weather-resistant TC Bolts / Ni Type High Strength High Weather-resistant TC Bolts

High Strength Weather-resistant Hexagon Bolts / Ni Type High Strength High Weather-resistant Hexagon Bolts

Antirust treatment high-strength bolt is a high-strength bolt that has relatively short-term rust prevention performance, in order to prevent rust from occurring during tightening of high-strength bolt until finish painting.

Features

• It prevents the occurrence of rust over a long period and there is no need for rusting at the time of this painting.
• The torque coefficient value is low and it is stable.
• It is excellent in compatibility with various topcoating paints.
• Joint properties (sliding resistance, stress relaxation, loosening, etc.) are usually the same as high strength bolts.
• There is no stain due to antirust oil, there is no adhesion of dust etc.
• The appearance is beautiful.

Specification

Nut

Washer

Features

We have developed 12G hot dip galvanized high strength hexagon bolt (trade name: 12GSHTB) and acquired certification by the Minister of Land, Infrastructure, Transport and Tourism (certification number: MBLT – 0064).
This is a development of the technology of the Torsha type ultra high strength bolt (trade name: SHTB) which already has many sales results. In the future, you can use it for various buildings, multi-level parking lot, bridge, steel tower etc.

Specification

Nut and Washer

Features

Size Chart

Weight of bolt (unit: g)

Bolt length

Please choose the bolt’s neck length by adding the following length to the tightening length (the total thickness of the steel to be tightened).

standard

Mechanical properties of bolt

Design proof

Design bolt tension

Here, the reference value of material strength (specified proof stress) = 1260 (N / mm²).
Remarks: Design bolt tension = effective cross-sectional area × specified proof stress × 75%
standard bolt tension = 10% increase of design value (same concept as S10T)

Introduction tension

Standard sign (Certification number of the Minister of Land, Infrastructure, Transport and Tourism)

Construction

It has the same efficient tightening workability as the conventional Torsha type high-strength bolt.

【Precautions for use】

• Please use SHTB in indoor environment. Also, please do not use it indoors under the corrosive environment such as hot spring facilities, hot water pool etc. (For delayed breakdown prevention) If you are unsure about the use environment, please consult us.
• 12 G SHTB (12 G hot dip galvanized high strength hexagon bolt) is available for outdoor use, so please consult us separately.
• Since the introduction tension of SHTB is higher than ordinary high tension bolt, please use the corresponding tightening machine.
• When tightening, please check the mark of the bolt head.

SHTB compliant tightening machine list