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Shop/Category/Fig. 11 — OIL TANK, SIDECOVERS, SILENCER/BSA Bolt, oil tank mounting (¼" British Standard Cycle × 1¾")
BSA Bolt, oil tank mounting (¼" British Standard Cycle × 1¾")
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DiagramFig. 11 — OIL TANK, SIDECOVERS, SILENCER · ref 6
Subsystemengine bottom
Listed in parts books1969–1970

BSA Bolt, oil tank mounting (¼" British Standard Cycle × 1¾")

A 1/4 inch BSC by 1-3/4 inch bolt used to mount the oil tank, appearing in oil tank and sidecover hardware listings.

PN · 40-8435

This is a mounting bolt for the oil tank, 1/4 inch British Standard Cycle thread by 1-3/4 inches long. It shows up in the parts book under the OIL TANK, SIDECOVERS, and SILENCER figures, which tells you it lives in that cluster of hardware toward the back of the bike where the oil tank sits alongside the side covers and the silencer mounting points.

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The catalog description flags it as BSC thread, which was common fastener spec on British bikes of this era for smaller mounting bolts, so double check what's actually in your tank mounts before you order a batch - BSC and other thread standards aren't interchangeable.

Our records show this bolt appearing across catalog entries from 1969 to 1970. If you're not sure this is the exact bolt your oil tank uses, give us a call and we'll go over it with you before you order.

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