Nuts

Part Number	Description / PDF	Quantity
0800440TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 4-40 THREAD .2	625
0401032HNPC Richco, Inc. (Essentra Components)	HEX NUT 10-32 THREAD .135 HEIGHT	1000
CGLN-M20-BK Richco, Inc. (Essentra Components)	LOCK NUT 1.062" NYLON M20	1582
0400348HN Richco, Inc. (Essentra Components)	HEX NUT 3-48 THREAD .070 HEIGHT	1000
05M160200CN Richco, Inc. (Essentra Components)	CAP NUT M16 X 2 THREAD 24.8 HEIG	998
0425020HFN Richco, Inc. (Essentra Components)	HEX FLANGE NUT 1/4-20 THREAD .58	934
04M250150WFHN Richco, Inc. (Essentra Components)	HEX FLANGE NUT, M25 X 1.5 THREAD	1975
05M120175CNB Richco, Inc. (Essentra Components)	CAP NUT M12 X 1.75 THREAD 20.5 H	1000
0500832CN Richco, Inc. (Essentra Components)	CAP NUT 8-32 THREAD .375 HEIGHT	995
0600632DECOWN Richco, Inc. (Essentra Components)	DECO WING NUT 6-32 THREAD 5/16 H	963
CGLN-NPT-3/4-BK Richco, Inc. (Essentra Components)	LOCK NUT 1.417" NYLON NPT-3/4	1680
04M080125HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, M8 X 1.	0
0631218DLWN Richco, Inc. (Essentra Components)	DECO WING NUT 5/16-18 THREAD 29/	1000
0425020LPNS Richco, Inc. (Essentra Components)	HEX WASHER NUT 1/4-20 THREAD .68	1000
04M060100WFHN Richco, Inc. (Essentra Components)	HEX FLANGE NUT, M6 X 1 THREAD, 1	1762
0450020HN Richco, Inc. (Essentra Components)	HEX NUT 1/2-20 THREAD .430 HEIGH	999
0412527PJN Richco, Inc. (Essentra Components)	HEX JAM NUT 1/8-27 THREAD .11 HE	2000
0500440CNB Richco, Inc. (Essentra Components)	CAP NUT 4-40 THREAD .280 HEIGHT	649
0462511HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, 5/8-11	9383
0400440HNS Richco, Inc. (Essentra Components)	HEX NUT 4-40 THREAD .124 HEIGHT	5233

Nuts

1. Overview

Nuts are threaded fasteners with internal threads designed to mate with bolts or screws to secure mechanical components. As critical elements in assembly systems, nuts provide removable joints that maintain structural integrity under various operational conditions. Their importance spans across industries requiring precision engineering, vibration resistance, and load-bearing capabilities.

2. Major Types and Functional Classification

Type	Functional Characteristics	Application Examples
Hex Nuts	Standard six-sided design with coarse/fine threads, economical and versatile	General machinery assembly
Lock Nuts	Integrated anti-loosening features (nylon insert, distorted thread)	Automotive powertrain systems
Flange Nuts	Integrated washer face reduces surface pressure	Sheet metal applications
Weld Nuts	Projection weld design for permanent metal joining	Steel structure fabrication
Cap Nuts	Protective enclosure for threaded ends	Exterior architectural components

3. Structure and Composition

Typical nut configurations feature a prismatic or cylindrical body with chamfered corners. Key structural elements include:

Hexagonal wrenching surfaces (90% of standard nuts)
Internal ISO metric or Unified thread profiles
Material compositions: Carbon steel (8.8-12.9 grade), Stainless Steel (A2/A4), Brass, Aluminum
Surface treatments: Zinc plating, Geomet coating, Dacromet

4. Key Technical Specifications

Parameter	Importance
Tensile Strength (800-1200 MPa)	Determines load capacity in clamping applications
Hardness (HRC 20-39)	Affects wear resistance and torque performance
Thread Class (6H, 4H)	Defines fit precision with mating bolts
Vibration Resistance	Critical for dynamic load applications
Corrosion Resistance	Measured via salt spray testing ( 72h)

5. Application Fields

Automotive: Engine assembly, chassis systems
Aerospace: Aircraft engine mounts, landing gear
Construction: Steel frame connections, bridge structures
Electronics: PCB mounting, enclosure assembly
Renewable Energy: Wind turbine tower connections

6. Leading Manufacturers and Products

Manufacturer	Representative Products
ITW Shakeproof	Nord-Lock wedge-locking washers and nuts
PEM	SF series flush weld nuts
Hilti	IN fastening systems for concrete applications
Yamawa	High-precision JIS standard nuts

7. Selection Recommendations

Key selection criteria:

Material compatibility with mating bolt (e.g., A2 stainless nut with A2 bolt)
Environmental factors: Temperature range (-50 C to +300 C), chemical exposure
Torque requirements: Proof load specifications
Case Study: Wind turbine tower connections require M64 10.9 grade nuts with 10 m zinc coating

Industry Trends Analysis

Current development directions include:

Advanced materials: Carbon fiber-reinforced polymer nuts for weight reduction
Smart fasteners: Integrated strain sensors for real-time load monitoring
Manufacturing innovation: Cold forming processes achieving G05 dimensional accuracy
Sustainability: Bio-based coatings replacing traditional zinc plating