Knobs

Image Part Number Description / PDF Quantity Rfq
1234-B

1234-B

Davies Molding, LLC.

KNOB FLUTED 0.236" POLYPROPYLENE

0

3065DZ

3065DZ

Davies Molding, LLC.

KNOB KNURLED #10-32 PHENOLIC

225

3025HR

3025HR

Davies Molding, LLC.

KNOB 3 ARM THERMOSET POLYESTER

200

3084BK

3084BK

Davies Molding, LLC.

KNOB SMOOTH THERMOPLASTIC

200

3036AV

3036AV

Davies Molding, LLC.

KNOB 3 ARM THERMOPLASTIC

100

3025HB

3025HB

Davies Molding, LLC.

KNOB 3 ARM M6 X 1 PHENOLIC

100

3088AT

3088AT

Davies Molding, LLC.

KNOB SMOOTH 5/16"-18 POLYPRO

250

3025AZ

3025AZ

Davies Molding, LLC.

KNOB 3 ARM #10-24 PHENOLIC

1557

2980-S

2980-S

Davies Molding, LLC.

KNOB 5 ARM 3/8"-16 PHENOLIC

0

2965MB

2965MB

Davies Molding, LLC.

KNOB FLUTED 1/4"-20 PHENOLIC

250

3036AS

3036AS

Davies Molding, LLC.

KNOB 3 ARM THERMOPLASTIC

100

3040JN

3040JN

Davies Molding, LLC.

KNOB 3 ARM 5/16"-18 PHENOLIC

0

3084BP

3084BP

Davies Molding, LLC.

KNOB SMOOTH THERMOPLASTIC

200

7077-B

7077-B

Davies Molding, LLC.

25MM M6 THERMOPLASTIC EIGHT LOBE

0

2837-G

2837-G

Davies Molding, LLC.

KNOB 4 ARM 5/16"-18 POLYPRO

0

0131

0131

Davies Molding, LLC.

BALL KNOB BRASS INSERT 0.78"

200

3000PD

3000PD

Davies Molding, LLC.

KNOB FLUTED 1/4"-20 PHENOLIC

0

2837DW

2837DW

Davies Molding, LLC.

KNOB 4 ARM THERMOPLASTIC

100

4103HJ

4103HJ

Davies Molding, LLC.

KNOB FLUTED 3/8"-16 PHENOLIC

0

3000JS

3000JS

Davies Molding, LLC.

KNOB FLUTED 0.310" PHENOLIC

0

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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