Fish Bolts in Railway Rail Joints: Function, Sizes and RDSO Drawings
What a fish bolt does at a rail joint, why the RDSO drawing matters, and what to check before you order fish bolts with nuts.
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Bhilai-based manufacturer of high-strength hex bolts (M12–M64, IS 1363), RDSO fish bolts, track bolts for points & crossings, railway plate screws, foundation bolts and specialised fasteners to drawing. Serving SAIL Bhilai Steel Plant, Indian Railways and industry for 40 years.
What a fish bolt does at a rail joint, why the RDSO drawing matters, and what to check before you order fish bolts with nuts.
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