Make Structural bolts,

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

GALLING - A severe form of adhesive wear which occurs during sliding contact of one surface relative to another. Clumps of one part stick to the mating part and break away from the surface. (Can frequently occur when both the nut and bolt are zinc coated.)

GRIP LENGTH - Total distance between the underside of the nut to the bearing face of the bolt head; includes washer, gasket thickness etc.

Our Product Range: 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 Structural bolts & nuts

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 etc.

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.

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HARDENED WASHERS - The force under the head of a bolt or nut can exceed, at high preloads, the compressive yield strength of the clamped material. If this occurs excessive embedding and deformation can result in bolt preload loss.

To overcome this hardened washers under the bolt head can be used to distribute the force over a wider area into the clamped material. A more modern alternative is to use a flange headed nuts and bolts.

HARD JOINT - A joint in which the plates and material between the nut and bolt bearing surfaces have a high stiffness when subjected to compression by the bolt load. A joint is usually defined as hard if the bolt is tightened to its full torque and it rotates through an angle of 30 degrees or less after it has been tightened to its snug condition.

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