Abstract： AS 1085.4:2002 pdf download.Railway track material Part 4: Fishbolts and nuts. 4.4 Screw threads Profile and basic dimensions of the fishholt screw threads shall he in accordance with the ISO coarse series 6 g for external screw threads as...

AS 1085.4:2002 pdf download.Railway track material Part 4: Fishbolts and nuts.

4.4 Screw threads

Profile and basic dimensions of the fishholt screw threads shall he in accordance with the ISO coarse series 6 g for external screw threads as given in AS 1275.

4.5 Shape, dimensions and finish

The shape and dimensions of fishbolts shall be in accordance with Figure 1 and Table 3. The finish shall be in accordance with the following requirements:

(a) Bolts shall be cleanly finished. sound and free from defects detrimental to their end use.

(b) Ends of fishholts shall be either reasonably square with the centre-line of the shank. or rounded (see Figure I). Where the

ends of the fishbolts are finished square, a nominal 45° chamfer is to be provided to a depth slightly exceeding the depth of the thread.

NOTE: Fishplates not in accordance with AS 10X5.2 may require the shank of the bolt to have a different shape than the oval one

given in this Standard.

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