The bolt is made with two projections, called feathers, which fit into slots in the lugs called featherways; when the bolt is passed through the lugs it is locked in place by a half-turn so that the feathers and featherways are out of line with each other.
Ucanngo lwenziwe ngokujula ezimbini, ezibiizwa intsiba ezonela kumngxuma womqheba ezibizwa ezintsibeni xa uxabo ludluliswe kumngxuma itshixelwa endaweni ngehafu yokujika ukuze intsiba nosezintsibeni azingeni ndawo, azikho mgceni.