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Knurled rim knobs are made to obtain a firm grip and are used to control devices. The small ridge patterns are rolled or cut into the material for a non-slip grip. They come in a wide variety of different styles and are often used on applications where the operator may be in contact with damp or wet surfaces. The knurled rim helps to prevent fingers from slipping to ensure positive tightening. They are also available in a handle form for use with a longer or larger surface area that requires using other directional movements. A rugged fiber reinforced knob of black plastic with steel insert. The light gray cap can be removed by pressing slightly with fingers on outer edge and replaced by pushing on center of cap into place. Recess of knob under the cap hides the installation device. Knobs are stocked without flange attached. Attaching flange to knob is easily accomplished by three self threading rivets that are supplied. Nominal machine work such as keyways, set screw or dowel pin holes available upon request. ELESA Original Design

Page Updated6/19/2018
Knurled Instrument Knobs
Unit of Measure
1 

Item #

CAD

IntegrationID

Type

Material

L

h

d3

Z

T - Thread

Height

C - Mounting Hole

U - Tapped Depth

Insert Material

Protrusion

Y

Diameter

Stud Length

Alternate P/N

Quantity
M-29725 N/A N/A
7838
N/A No Flange - Size 1 N/A Fiber-Reinforced Plastic N/A N/A 0.59 in N/A 0.95 in N/A N/A N/A 1.14 in N/A 0.31 in N/A 0.63 in N/A Steel N/A 0.01 in N/A N/A 1.46 in (37.1 mm) N/A N/A 29725
29727A N/A N/A
7839
N/A No Flange - Size 2 N/A Fiber-Reinforced Plastic N/A N/A 0.87 in N/A 1.26 in N/A N/A N/A 1.38 in N/A 0.38 in N/A 0.87 in N/A Steel N/A 0.01 in N/A N/A 1.89 in (48 mm) N/A N/A
M-29729 N/A N/A
7840
N/A No Flange - Size 3 N/A Fiber-Reinforced Plastic N/A N/A 1.02 in N/A 1.65 in N/A N/A N/A 1.61 in N/A 0.50 in N/A 1.06 in N/A Steel N/A 0.01 in N/A N/A 2.28 in (57.9 mm) N/A N/A 29729
M-29735 N/A N/A
7841
N/A Pointer Flange - Size 1 N/A Fiber-Reinforced Plastic N/A 0.27 in N/A 0.59 in N/A 0.95 in N/A 1.77 in N/A N/A N/A 0.31 in N/A 0.63 in N/A Steel N/A N/A 1.42 in N/A 1.46 in (37.1 mm) N/A N/A 29735
M-29737 N/A N/A
7842
N/A Pointer Flange - Size 2 N/A Fiber-Reinforced Plastic N/A 0.31 in N/A 0.87 in N/A 1.26 in N/A 2.17 in N/A N/A N/A 0.38 in N/A 0.87 in N/A Steel N/A N/A 1.69 in N/A 1.89 in (48 mm) N/A N/A 29737
29739 N/A N/A
7843
N/A Pointer Flange - Size 3 N/A Fiber-Reinforced Plastic N/A 0.43 in N/A 1.02 in N/A 1.65 in N/A 2.76 in N/A N/A N/A 0.50 in N/A 1.06 in N/A Steel N/A N/A 2.05 in N/A 2.28 in (57.9 mm) N/A N/A
29745 N/A N/A
7844
N/A Blank Flange - Size 1 N/A Fiber-Reinforced Plastic N/A 0.27 in N/A 0.59 in N/A 0.95 in N/A 1.77 in N/A N/A N/A 0.31 in N/A 0.63 in N/A Steel N/A N/A 1.42 in N/A 1.46 in (37.1 mm) N/A N/A
M-29747 N/A N/A
7845
N/A Blank Flange - Size 2 N/A Fiber-Reinforced Plastic N/A 0.31 in N/A 0.87 in N/A 1.26 in N/A 2.17 in N/A N/A N/A 0.38 in N/A 0.87 in N/A Steel N/A N/A 1.69 in N/A 1.89 in (48 mm) N/A N/A 29747
M-29749 N/A N/A
7846
N/A Blank Flange - Size 3 N/A Fiber-Reinforced Plastic N/A 0.43 in N/A 1.02 in N/A 1.65 in N/A 2.76 in N/A N/A N/A 0.50 in N/A 1.06 in N/A Steel N/A N/A 2.05 in N/A 2.28 in (57.9 mm) N/A N/A 29749
M-29750 N/A N/A
7847
N/A Flange Only - Calibrated N/A Fiber-Reinforced Plastic N/A 0.27 in N/A N/A N/A 1.77 in N/A N/A N/A N/A N/A N/A N/A N/A 1.46 in (37.1 mm) N/A N/A 29750
M-29752 N/A N/A
7848
N/A Flange Only - Calibrated N/A Fiber-Reinforced Plastic N/A 0.31 in N/A N/A N/A 2.17 in N/A N/A N/A N/A N/A N/A N/A N/A 1.89 in (48 mm) N/A N/A 29752
M-29754 N/A N/A
7849
N/A Flange Only - Calibrated N/A Fiber-Reinforced Plastic N/A 0.43 in N/A N/A N/A 2.76 in N/A N/A N/A N/A N/A N/A N/A N/A 2.28 in (57.9 mm) N/A N/A 29754
M-29755 N/A N/A
7850
N/A Flange Only - Blank N/A Fiber-Reinforced Plastic N/A 0.27 in N/A N/A N/A 1.77 in N/A N/A N/A N/A N/A N/A N/A N/A 1.46 in (37.1 mm) N/A N/A 29755
M-29757 N/A N/A
7851
N/A Flange Only - Blank N/A Fiber-Reinforced Plastic N/A 0.31 in N/A N/A N/A 2.17 in N/A N/A N/A N/A N/A N/A N/A N/A 1.89 in (48 mm) N/A N/A 29757
M-29759 N/A N/A
7852
N/A Flange Only - Blank N/A Fiber-Reinforced Plastic N/A 0.43 in N/A N/A N/A 2.76 in N/A N/A N/A N/A N/A N/A N/A N/A 2.28 in (57.9 mm) N/A N/A 29759
Unit of Measure
1