You searched for "round diffuser"
Elesa
Elesa 6521 Black Polyamide Based Technopolymer Round Knob, M5, Blind Hole
Part: 6521
Black plastic round knob for machines and equipment with M5 threaded blind hole mounting.
Elesa
Elesa 6576 Black Polyamide Based Technopolymer Round Knob, M6 x 16, Threaded Stud
Part: BT.20 p-M6x16
Black round clamping knob with M6 threaded stud for machine adjustment and control.
Elesa
Elesa 6591 Black Polyamide Based Technopolymer Round Knob, M6 x 40, Threaded Stud
Part: BT.20 p-M6X40
Black plastic round knob with M6 threaded stud for machine controls and industrial equipment.
Elesa
Elesa 6546 Black Polyamide Based Technopolymer Round Knob, M5 x 16, Threaded Stud
Part: 6546
Black plastic round knob with M5 threaded stud for machinery and equipment controls.
Elesa
Elesa 6581 Black Polyamide Based Technopolymer Round Knob, M6 x 25, Threaded Stud
Part: 6581
Black plastic round knob with M6 thread for adjusting or securing machine controls and equipment.
Elesa
Elesa 503511 Natural Stainless Steel Round Knob, M6, Blind Hole
Part: 503511
Stainless steel round clamping knob with M6 thread for blind hole mounting.
Yahata Neji
Yahata Neji, M4 Brass Thumb Screw, Nickel Plated Finish, 15mm
Part: KS M4X15
Brass thumb screw with nickel plating for precision hand-tightening in machinery.
RS PRO
RS PRO Silver Ball Clamping Knob, M10, Threaded Hole
Part: 144-3631
Silver ball knob for ergonomic M10 threaded hole adjustment.