Knobs

Part Number	Description / PDF	Quantity
KNH4-HEX3P4---- Richco, Inc. (Essentra Components)	SELF-ASSEMBLY 3 ARM KNOB 1.750 I	0
KN1C----B7SL-21 Richco, Inc. (Essentra Components)	BALL KNOB 1.880 IN DIAMETER WITH	115
KN6C----B1-L-21 Richco, Inc. (Essentra Components)	BALL KNOB 1.000 IN DIAMETER WITH	800
KN6C----TR6--21 Richco, Inc. (Essentra Components)	CLAMPING T HANDLE KNOB 2.250 IN	600
KN5C----B2-L-21 Richco, Inc. (Essentra Components)	BALL KNOB 1.250 IN DIAMETER WITH	450
29F516BL Richco, Inc. (Essentra Components)	FLOWERETTE THUMB SCREW KNOBS, NO	1000
KN4C0750R3--S21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.570 IN DIAM	350
KN4C----5S2B-21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.380 IN DIAM	500
KN4C----F6---21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 2.380 IN DI	250
KN5C----B3---22 Richco, Inc. (Essentra Components)	BALL KNOB 1.380 IN DIAMETER WITH	600
KN6C15003P4--21 Richco, Inc. (Essentra Components)	CLAMPING 3 ARM KNOB 1.750 IN DIA	600
KN6X-8X-S5----- Richco, Inc. (Essentra Components)	TAPERED KNOB 1.630 IN DIAMETER3/	250
KNM8----B2---21 Richco, Inc. (Essentra Components)	BALL KNOB 1.250 IN DIAMETER WITH	450
KN6C0750F4---21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 1.750 IN DI	500
KN4C----5S3A-21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.750 IN DIAM	700
KN041000F2---21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 1.375 IN DI	1200
KN4C----R2I--21 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.310 IN DIAM	350
KN5C----F7S--21 Richco, Inc. (Essentra Components)	CLAMPING FLUTED KNOB 2.500 IN DI	200
KN5C----5S2B-22 Richco, Inc. (Essentra Components)	CLAMPING STAR KNOB 1.380 IN DIAM	900
29M500RRD Richco, Inc. (Essentra Components)	ROUND THUMB SCREW KNOBS, NO SCRE	2000

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