The term "SS bolts" most commonly refers to the "SS lightning bolt runes," which are the emblematic symbol of the Schutzstaffel (SS), a paramilitary organization under Adolf Hitler and the Nazi Party in Nazi Germany. These SS bolts consist of two sig runes (ᛋᛋ), drawn side by side like lightning bolts, and were used as the official logo and insignia of the SS. The symbol stood for the initials "SS" and also symbolized "victory," as the sig rune was interpreted as a victory sign. This emblem became widely recognized and was even incorporated into German typewriters during the Nazi period to allow for easier typesetting of the symbol.

If the question was about "SS bolts" in the context of hardware or fasteners (stainless steel bolts), please clarify so the explanation can be aligned accordingly.