Nuts

Part Number	Description / PDF	Quantity
0525018CN Richco, Inc. (Essentra Components)	CAP NUT 1/4-18 THREAD .810 HEIGH	1000
0700832LN Richco, Inc. (Essentra Components)	LOCKING HEX NUT 8-32 THREAD .230	960
0531224CN Richco, Inc. (Essentra Components)	CAP NUT 5/16-24 THREAD .530 HEIG	1000
0443714HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, 7/16-14	4995
0475016HJN Richco, Inc. (Essentra Components)	JAM NUTS, NATURAL, NYLON 6/6, 3/	1997
0531218CN Richco, Inc. (Essentra Components)	CAP NUT 5/16-18 THREAD .530 HEIG	1000
0725020LN Richco, Inc. (Essentra Components)	LOCKING HEX NUT 1/4-20 THREAD .2	786
0525028CN Richco, Inc. (Essentra Components)	CAP NUT 1/4-28 THREAD .475 HEIGH	975
0625028WNA Richco, Inc. (Essentra Components)	WING NUT, NATURAL, NYLON 6/6, 1/	2000
05M050080CN Richco, Inc. (Essentra Components)	CAP NUT M5 X .8 THREAD 10.0 HEIG	1000
0601032WNA Richco, Inc. (Essentra Components)	WING NUT 10-32 THREAD .63 HEIGHT	950
CGLN-PG16-BK Richco, Inc. (Essentra Components)	LOCK NUT 1.181" NYLON PG16	372
0450013HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, 1/2-13	49923
0700256SLN Richco, Inc. (Essentra Components)	LOCK AND FLANGE NUT, NATURAL, NY	5184
0562511CNB Richco, Inc. (Essentra Components)	CAP NUT 5/8-11 THREAD .970 HEIGH	1000
07M060100LN Richco, Inc. (Essentra Components)	LOCKING HEX NUT M6 X 1 THREAD 6.	690
HN-M4-79 Richco, Inc. (Essentra Components)	HEX NUT 0.310" POLYCARBONATE M4	1560
0468727HN Richco, Inc. (Essentra Components)	HEX NUT 11/16-27 THREAD .250 H	0
1442505 Richco, Inc. (Essentra Components)	KWIK NUT 0.370" NYLON M4	4960
0475014PJN Richco, Inc. (Essentra Components)	HEX JAM NUT 3/4-14 THREAD .410 H	1000

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