Knobs

Part Number	Description / PDF	Quantity
KN6C----S3XL-21 Richco, Inc. (Essentra Components)	TAPERED KNOB 1.380 IN DIAMETER3/	500
KN8C1250R7--S21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 2.420 IN DIAM	144
KN04----K3-LN21 Richco, Inc. (Essentra Components)	PUSH PULL KNOB 0.750 IN DIAMETER	1250
KSN1----N4--5-- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY PUSH PULL KNOB 0.6	5000
29F516B Richco, Inc. (Essentra Components)	FLOWERETTE THUMB SCREW KNOBS, NO	1000
KNH10HEXF2----- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY FLUTED KNOB 1.380	300
KNH7-HEX4P7---- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY 4 ARM KNOB 2.500 I	500
KN6C25003P4--21 Richco, Inc. (Essentra Components)	CLAMPING 3 ARM KNOB 1.750 IN DIA	275
KN8C----B4-L-21 Richco, Inc. (Essentra Components)	BALL KNOB 1.470 IN DIAMETER WITH	250
29R516BL Richco, Inc. (Essentra Components)	ROUND THUMB SCREW KNOBS, NO SCRE	1999
KSN1----T0--5-- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY T HANDLE KNOB 1.02	3499
KNH1-HEX5SA---- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY STAR KNOB 2.250 IN	475
KN5C----5SAB-22 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 2.250 IN DIAM	500
KN8C----4P7B-21 Richco, Inc. (Essentra Components)	CLAMPING 4 ARM KNOB 2.500 IN DIA	500
KN5C0750F4---21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 1.750 IN DI	500
KN6C----F7SB-21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 2.500 IN DI	200
KN4C----5S4L-21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 2.250 IN DIAM	600
KN6C2000RT5--21 Richco, Inc. (Essentra Components)	CLAMPING 3 ARM KNOB 2.000 IN DIA	500
29F014B Richco, Inc. (Essentra Components)	FLOWERETTE THUMB SCREW KNOBS, NO	750
KN4C06254S2-S21 Richco, Inc. (Essentra Components)	CLAMPING 4 ARM KNOB 1.400 IN DIA	500

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