*Flat-nock. The simplest style but also the most dangerous. This can only be used on very low poundage bows. for crossbows
*Self-nock. The most common form of nock, being quick and easy to make as well as much safer than using a flat-nocked arrow.
*Brass nocks. These are very rare, having been found in only 2 locations. They are made from cast brass. These arrows were more likely to have been used for hunting rather than battle.[PEDERSEN 2014A:p.96] A grave in Hedeby, :* Old Denmark, had Hedeby. Boat grave with at least 9 arrows with inserted brass nocks. The grave was dated to <><> and is thought to have been that of a King, possibly <><>. [PEDERSEN 2014A:p.96] [PEDERSEN 2014B:p.104, 153 cat.372] The other find was from Oldenburg, :* Germany, where Oldenburg. 2 brass nocks were found of similar form to those from Hedeby and dated to the C9th. [PEDERSEN 2014A:p.96]<br>
The arrow shaft just below the nock was often bound with twine (sinew or hemp) to help stop the arrow shaft from splitting.