Unified coarse screw threads
This Japanese Industrial Standard specifies the basic profile, and the formal and basic size of unified coarse screw threads used for aircrafts and otherwise only when especially required.
Reference : This unified coarse screw threads are coincident with the coarse series screw threads of ISO inch screw threads specified in ISO 263.
Check out other specifications
Slotted head screws
Diameter of clearance holes and counter bores for bolts and screws
Hexagon nuts with metric coarse and fine pitch thread – Product classes A and B
Hexagon head screws with metric fine pitch thread – Product grades A and B – (ISO 8676: 1988) – English version of DIN EN 28 676
CARBON AND ALLOY STEEL METRIC NUTS
General rules for tightening of threaded fasteners
Slotted spring-type straight pins (ISO 8752: 1987) English version of DIN EN 28 752