Knobs

Part Number	Description / PDF	Quantity
KN4C1750F6---21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 2.380 IN DI	225
KN5C1500K6D-A21 Richco, Inc. (Essentra Components)	PUSH PULL KNOB 1.000 IN DIAMETER	400
KN4C0375K7---21 Richco, Inc. (Essentra Components)	PUSH PULL KNOB 0.750 IN DIAMETER	1500
KN6C2250R5--S21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.890 IN DIAM	170
KNM10---B5---21 Richco, Inc. (Essentra Components)	BALL KNOB 1.610 IN DIAMETER WITH	200
29R004B Richco, Inc. (Essentra Components)	ROUND THUMB SCREW KNOBS, NO SCRE	1993
29M600RBL Richco, Inc. (Essentra Components)	ROUND THUMB SCREW KNOBS, NO SCRE	2000
KN4C----4P7--21 Richco, Inc. (Essentra Components)	CLAMPING 4 ARM KNOB 2.500 IN DIA	500
KN4C2000T5---21 Richco, Inc. (Essentra Components)	CLAMPING T HANDLE KNOB 2.000 IN	800
KNH5-HEX5S2---- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY STAR KNOB 1.380 IN	1000
KN8C----S3-L-21 Richco, Inc. (Essentra Components)	TAPERED KNOB 1.380 IN DIAMETER1/	500
KN4C0750K6--N21 Richco, Inc. (Essentra Components)	PUSH PULL KNOB 1.000 IN DIAMETER	600
KNH3-HEXF4----- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY FLUTED KNOB 1.750	700
KN6C0750R5--S21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.890 IN DIAM	200
KN6C10004P7--21 Richco, Inc. (Essentra Components)	CLAMPING 4 ARM KNOB 2.500 IN DIA	400
KN4C----PL4L-21 Richco, Inc. (Essentra Components)	PUSH PULL KNOB 1.000 IN DIAMETER	1200
KNM8----B5---21 Richco, Inc. (Essentra Components)	BALL KNOB 1.610 IN DIAMETER WITH	200
KN6C07504P7--21 Richco, Inc. (Essentra Components)	CLAMPING 4 ARM KNOB 2.500 IN DIA	450
KN4C1000T5---21 Richco, Inc. (Essentra Components)	CLAMPING T HANDLE KNOB 2.000 IN	1000
KN6C----B3---21 Richco, Inc. (Essentra Components)	BALL KNOB 1.380 IN DIAMETER WITH	300

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

Type	Functional Characteristics	Application Examples
Wing Screws	Hand-adjustable fastening with wing-shaped heads	Panel fastening in electronics enclosures
Dial Knobs	Precision adjustment with graduated scales	Lab equipment and audio mixers
Keyed Locknuts	Security-focused design with key-operated adjustment	Machinery calibration systems
Pull-to-Release Knobs	Integrated locking mechanism with axial release	Industrial 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

Parameter	Significance
Material Hardness (Shore/Brinell)	Determines wear resistance and load capacity
Thread Engagement Depth	Affects axial load transmission efficiency
Maximum Torque Rating (Nm)	Critical for rotational force transmission
Temperature Resistance Range	Defines operational limits in extreme environments
Surface Friction Coefficient	Impacts 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

Manufacturer	Product Series	Key Features
Misumi	KA2000 Series	Modular design with 12-position indexing
Knobs-R-Us	ProGrip XT	Ergonomic thermoplastic elastomer coating
Eclipse Industrial	Aluminum 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