Nuts

Part Number	Description / PDF	Quantity
0437516HJN Richco, Inc. (Essentra Components)	JAM NUTS, NATURAL, NYLON 6/6, 3/	4824
0801032TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 10-32 THREAD .	0
0500632LCN Richco, Inc. (Essentra Components)	CAP NUT, NATURAL, NYLON 6/6, #6-	4419
0825020TNAB Richco, Inc. (Essentra Components)	THUMB NUT, KNURLED, 1/4-20 THREA	498
0700632SLN Richco, Inc. (Essentra Components)	LOCK AND FLANGE NUT, NATURAL, NY	4833
05M060100CNB Richco, Inc. (Essentra Components)	CAP NUT M6 X 1 THREAD 12.0 HEIGH	474
CGLN-PG7-BK Richco, Inc. (Essentra Components)	LOCK NUT 0.748" NYLON PG7	1364
0550013CN Richco, Inc. (Essentra Components)	CAP NUT 1/2-13 THREAD .810 HEIGH	985
0601032WNC Richco, Inc. (Essentra Components)	WING NUT 10-32 THREAD 29/64 HEIG	1000
0825020TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 1/4-20 THREAD	839
0601024WNC Richco, Inc. (Essentra Components)	WING NUT 10-24 THREAD 29/64 HEIG	1000
0537532CN Richco, Inc. (Essentra Components)	CAP NUT 3/8-32 THREAD .620 HEIGH	1000
0543714CNB Richco, Inc. (Essentra Components)	CAP NUT, 7/16-14 THREAD, .810 HE	500
05M080125CN Richco, Inc. (Essentra Components)	CAP NUT M8 X 1.25 THREAD 15.0 HE	772
0501032LCN Richco, Inc. (Essentra Components)	CAP NUT, NATURAL, NYLON 6/6, #10	2529
0400632HN Richco, Inc. (Essentra Components)	HEX NUT 6-32 THREAD .120 HEIGHT	2781
0637516DECOWN Richco, Inc. (Essentra Components)	DECO WING NUT 3/8-16 THREAD 29/6	974
06M100150WN Richco, Inc. (Essentra Components)	WING NUT M10 X 1.5 THREAD 18.3MM	93
0425020HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, 1/4-20	42403
0700440LN Richco, Inc. (Essentra Components)	LOCKING HEX NUT 4-40 THREAD 0.18	1276

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