bulldozer Track Bolts With Washer

Fin neck bolt din 603. a round head fin neck bolt din 603 with a flat bearing surface which intersects with the shank at a 90° angle. where the bearing surface and shank meet are two fins, 180° opposite each other. the bolt is made from low carbon steel. advantages: primarily used in thin plywood to keep the bolt from turning when nut is being tightened.

Astm a193 grade b7m is a material specification for high tensile alloy steel bolts, stud bolts, screws, threaded rods, for high temperature or high pressure applications. astm a193 b7m is a chromium-molybdenum alloy with minimum tensile of 100 ksi, yield 75 ksi and maximum hardness of 235 hwb. aisi 4140, 4142, 4145, 4140h, 4142h, and 4145h are common steel used for manufacturing grade b7 bolts.

The standard astm a193 b7 fasteners are typically available in a plain, bare metal finish. but if required by the buyer, the astm a193 grade b7 stud bolts can be zinc plated, hot-dip galvanized, xylan coated, ptfe coated. coating the astm a193 b7 fasteners aids in enhancing the corrosion resistance of the fasteners.this astm a193 grade b7m bolts are commonly used in fastening medium high ...

A railroad track spike or a rail spike is a large nail with an offset head that is used to secure rails and base plates to the sleepers in track. as an important part of rail fastening system , rail spike is roughly chisel-shaped with a flat-edged point.

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