Turnilyo

An turnilyo amo an pandukot nga baga hin raysang, an pagkakaiba may roskas nga napalibot ha lawas.

Pinanbasaran

Bibliograpiya

Mga sumpay ha gawas

 How the World Got Screwed
 Screws Small Encyclopedia
 NASA-RP-1228 Fastener Design Manual
 Imperial/Metric fastening sizes comparison
 "Hold Everything", February 1946, ''Popular Science" article section on screws and screw fastener  technology developed during World War Two
 How to feed screws and dowels