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Asia Bolts & Nuts (MFG) Sdn.Bhd.
High Quality Standard
 
 

Terminology on topics related to nuts and bolts, threaded fasteners and tightening techniques

HIGH STRENGTH FRICTION GRIP BOLTS - Sometimes abbreviated to HSFG bolts. Bolts which are of high tensile strength used in conjunction with high strength nuts and hardened steel washers in structural steelwork. The bolts are tightened to a specified minimum shank tension so that transverse loads are transferred across the joint by friction between the plates rather than by shear across the bolt shank.

HOT BOLTING
This term is used for the completion of maintenance work on a bolted joint when the joint is under loading. This can involve the replacement of individual bolts. There are risks both to the joint itself and to health and safety associated with this technique.

HYDRAULIC TENSIONER
A hydraulic tool used to tighten a fastener by stretching it rather than applying a large torque to the nut. After the fastener has been stretched, the nut is run down the thread to snug up with the joint, the hydraulically applied load is then removed resulting in tension being induced into the fastener.

HYDROGEN EMBRITTLEMENT
Steel fasteners exposed to hydrogen can fail prematurely at a stress level well below the materials yield strength. Hydrogen embrittlement occurs in fasteners usually as a result of the part being exposed to hydrogen at some time during its manufacturing process but it can also occur through in-service corrosion.

Electroplating is generally considered to be a major cause of hydrogen absorption in steel fasteners due to the release of hydrogen during this process. Higher strength steels are more susceptible to hydrogen embrittlement than lower strength steels, however it is considered that there is no lower strength limit.

As a rule of thumb, steels below Rockwell C 35 are considered to be far less susceptible. Tests such as the incremental load hydrogen embrittlement test can be completed to assess if hydrogen embrittlement is present in a batch of fasteners.

   We strive to provide quality bolts, nuts and Other Fasteners at competitive prices to meet the satisfaction of our Valued Customers and in an environment where Our employees are valued, respected and highly motivated, bonded by long-term relationship with our Trade Associates.

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We are able to manufacture standard bolts Hot forging up to the following dimension: Diameter up to 64 mm or 2.5 inches Length up to 1 meter In accordance with the international standard such as ISO, Din BS, ASTM, JIS, ANSI and special requirements our Manufacturing Process play an important role in supplying a wide range of;

bolts, nuts and fasteners to the SUS 304, 316 stainless steel bolts, nuts, U-bolts & studs Various types of Customized Anchor bolts, U-bolts, Eye bolts, Plow bolts, Carriage bolts, Couplers & Inserts, Cast-in anchors, Hex socket cap & set screws,

F10T High Quality tension control bolting, ASTM A193 Grade B7 stud bolts with A194 2H nuts, Expansion bolts, Chemical anchors & studs, F10T High Strength Friction Grip bolts & nuts, Grade 4.6, 4.8, 5.8, 6.8, 8.8, 10.9 & 12.9 fasteners ASTM A325 high strength bolts & nuts

  

 


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