| Also known as | 99-3516, DS 55, DS-55 |
| Diagram | Fig. 16 — MUDGUARDS AND NUMBER PLATES · ref 28 |
| Subsystem | bodywork |
| Listed in parts books | 1960–1968 |
Bolt (3/4 in. U.H.)
A 3/4 inch under-head bolt used in mudguard, fender, and frame mounting points, later renumbered 99-3516.
DS55 is a 3/4 inch under-head bolt that shows up again and again in the mudguard and fender fitment tables, and it also turns up in general frame listings. It's the kind of small fastener that holds fender stays, brackets, and mounting points together rather than being a single showpiece part, so if you're missing one off a guard or number plate mount, this is likely what was there originally.
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The part carries a factory renumbering — this bolt was later cataloged as 99-3516, so if your parts book or an old invoice shows that number, it's the same physical bolt. It appears across a long stretch of catalog years, which tells you it was a common, long-running fastener rather than something tied to one narrow model change.
Given it's a basic bolt, keep in mind the catalog only confirms the length under the head at 3/4 inch — thread size and pitch aren't something we can state from what's in front of us, so if you're matching this to a specific mudguard bracket, bring the old bolt or the hole it threads into and we'll get you sorted.
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