The engineer's sketch-book of mechanical movements, devices, appliances, contrivances and details employed in the design and construction of machinery for every purpose

by Thomas Walter Barber

[1397]. Thumb or shutter screw.

[1398]. Milled head screw.

[1399]. T head screw.

[1400]. Thumb or fly nut and screw.

[1401]. Hexagon collar stud to receive a nut or other female screwed fixing.

[1402]. Bolt head for forked spanner, used for sunk or countersunk heads.

[1403]. Hexagon head, with solid washer or collar.

[1404]. T head bolt for T grooves in castings.

[1405] & [1406]. Countersunk heads.

[1407]. Eye bolt, with flat sides and straight eye for a pin or bolt.