Nuts

Part Number	Description / PDF	Quantity
04M020040HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, M2 X .4	23798
04M030050HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, M3 X .5	18313
0525028CNB Richco, Inc. (Essentra Components)	CAP NUT, 1/4-28 THREAD, .475 HEI	500
0446832HJN Richco, Inc. (Essentra Components)	HEX JAM NUT 15/32-32 THREAD .125	980
0600440WN Richco, Inc. (Essentra Components)	WING NUT 4-40 THREAD .48 HEIGHT	983
05M040070CNB Richco, Inc. (Essentra Components)	CAP NUT M4 X .7 THREAD 8.0 HEIGH	1064
0831218TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 5/16-18 THREAD	950
0625028WN Richco, Inc. (Essentra Components)	WING NUT 1/4-28 THREAD .71 HEIGH	1000
0462518HJN Richco, Inc. (Essentra Components)	JAM NUTS, NATURAL, NYLON 6/6, 5/	2880
CGLN-PG9-BK Richco, Inc. (Essentra Components)	LOCK NUT 0.866" NYLON PG9	3187
0462511HJN Richco, Inc. (Essentra Components)	JAM NUTS, NATURAL, NYLON 6/6, 5/	2990
0700440SLN Richco, Inc. (Essentra Components)	SELF THREADING LOCK NUT 4-40 .20	3310
0600832WNC Richco, Inc. (Essentra Components)	WING NUT 8-32 THREAD 29/64 HEIGH	970
06M050080DLWN Richco, Inc. (Essentra Components)	DECO LOCK WING NUT M5 X .8 THREA	989
0501024LCNB Richco, Inc. (Essentra Components)	LOCKING CAP NUT, #10-24 THREAD,	500
05M120175CN Richco, Inc. (Essentra Components)	CAP NUT M12 X 1.75 THREAD 20.5 H	1000
0500632CNB Richco, Inc. (Essentra Components)	CAP NUT 6-32 THREAD .345 HEIGHT	640
0500440LCN Richco, Inc. (Essentra Components)	CAP NUT, NATURAL, NYLON 6/6, #4-	4385
HN-6-32-01 Richco, Inc. (Essentra Components)	HEX NUT 0.305" NYLON 6-32	0
05M040070LCN Richco, Inc. (Essentra Components)	LOCKING CAP NUT M4 X .7 THREAD 8	934

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