Knobs

Image Part Number Description / PDF Quantity Rfq
KN5C1750F6---21

KN5C1750F6---21

Richco, Inc. (Essentra Components)

CLAMPING FLUTED KNOB 2.380 IN DI

200

29R010B

29R010B

Richco, Inc. (Essentra Components)

ROUND THUMB SCREW KNOBS, NO SCRE

7999

ML-50-3-7

ML-50-3-7

Kilo International

KNOB SMOOTH 0.236" METAL

20

3081BT

3081BT

Davies Molding, LLC.

KNOB SMOOTH 5/16"-18 POLYPRO

0

6336.4-SG-50-M10-35

6336.4-SG-50-M10-35

J.W. Winco

CAST IRON STAR KNOB, STEEL STUD

30

5337.2-63-B8-C-DGR

5337.2-63-B8-C-DGR

J.W. Winco

FIVE-LOBED KNOB, PLASTIC

30

1910BN

1910BN

Davies Molding, LLC.

KNOB FLUTED W/SKIRT 0.250" PLAST

183

KN020750K6---21

KN020750K6---21

Richco, Inc. (Essentra Components)

PUSH PULL KNOB 1.000 IN DIAMETER

600

ML-63-4-5

ML-63-4-5

Kilo International

KNOB SMOOTH 0.250" METAL

52

6336.12-50-M10-45-25

6336.12-50-M10-45-25

J.W. Winco

STAR KNOB, SWIVEL THRUST PAD

30

5337.5-50-M10-30

5337.5-50-M10-30

J.W. Winco

FIVE-LOBED KNOB, PLASTIC

28

OEDL-63-2-5

OEDL-63-2-5

Kilo International

KNOB KNURLED 0.250" METAL

6

3036-H

3036-H

Davies Molding, LLC.

KNOB 3 ARM 5/16"-18 PLASTIC

0

8T175KR4

8T175KR4

J.W. Winco

STEEL KNURLED SCREW

50

OEDA-90-3-5

OEDA-90-3-5

Kilo International

KNOB KNURLED 0.250" METAL

18

7383015

7383015

J.W. Winco

PLASTIC 3-LOBED KNOB, BRASS

80

8N25X19

8N25X19

J.W. Winco

STAINLESS STEEL WING SCREW

30

6114070

6114070

J.W. Winco

PLASTIC 6-LOBED KNOB, BRASS

50

6335.5-AM-40-M8-30

6335.5-AM-40-M8-30

J.W. Winco

ALUMINUM HAND KNOB, STUD

30

D620

D620

J.W. Winco

PLASTIC 5-LOBED HAND KNOB, STEEL

100

Knobs

1. Overview

Knobs are mechanical components designed for manual adjustment, control, or fixation of devices and equipment. As critical elements in hardware systems, they provide user interfaces for torque transmission, positional adjustment, and functional control. Modern knob designs integrate ergonomic principles, material science, and precision engineering to ensure reliable performance across industrial, commercial, and consumer applications.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Wing ScrewsHand-adjustable fastening with wing-shaped headsPanel fastening in electronics enclosures
Dial KnobsPrecision adjustment with graduated scalesLab equipment and audio mixers
Keyed LocknutsSecurity-focused design with key-operated adjustmentMachinery calibration systems
Pull-to-Release KnobsIntegrated locking mechanism with axial releaseIndustrial control panels

3. Structure and Composition

Typical knob assemblies consist of: - Body: Formed from metal alloys (aluminum, brass) or engineered plastics (nylon, polycarbonate) - Threaded Insert: Brass or stainless steel internal threads for secure mounting - Retention Feature: Knurling, splines, or set screws for shaft coupling - Surface Treatment: Anodizing, powder coating, or electroplating for corrosion resistance

4. Key Technical Specifications

ParameterSignificance
Material Hardness (Shore/Brinell)Determines wear resistance and load capacity
Thread Engagement DepthAffects axial load transmission efficiency
Maximum Torque Rating (Nm)Critical for rotational force transmission
Temperature Resistance RangeDefines operational limits in extreme environments
Surface Friction CoefficientImpacts tactile feedback and slip resistance

5. Application Fields

  • Industrial Machinery: CNC machine controls, conveyor belt tensioners
  • Electronics: Audio equipment attenuators, test instrument selectors
  • Automotive: HVAC control knobs, seat adjustment mechanisms
  • Aerospace: Cockpit instrumentation controls, avionics panel fasteners
  • Medical Devices: Diagnostic equipment parameter adjusters

6. Leading Manufacturers and Products

ManufacturerProduct SeriesKey Features
MisumiKA2000 SeriesModular design with 12-position indexing
Knobs-R-UsProGrip XTErgonomic thermoplastic elastomer coating
Eclipse IndustrialAluminum Anodized Line MIL-STD-810G environmental compliance

7. Selection Guidelines

Key consideration factors: - Environmental conditions (temperature, chemical exposure) - Required torque transmission capacity - Mounting shaft geometry compatibility - Regulatory compliance (REACH, RoHS) - Aesthetic requirements for user interface

8. Industry Trends

Current development directions include: - Integration of smart materials with self-lubricating properties - Miniaturization for semiconductor manufacturing equipment - Haptic feedback enhancement through surface micro-texturing - Adoption of additive manufacturing for complex geometries - Increased use of corrosion-resistant polymer composites

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