Nuts

Part Number	Description / PDF	Quantity
0801032TNAB Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 10-32 THREAD .	1830
04M080125WFHN Richco, Inc. (Essentra Components)	HEX FLANGE NUT, M8 X 1.25 THREAD	1959
0400832HN Richco, Inc. (Essentra Components)	HEX NUT 8-32 THREAD .130 HEIGHT	8540
04M035060HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, M3.5 TH	2870
0600832DECOWN Richco, Inc. (Essentra Components)	DECO WING NUT 8-32 THREAD 5/16 H	975
0700256LN Richco, Inc. (Essentra Components)	LOCKING HEX NUT 2-56 THREAD .140	5985
0800440TNAB Richco, Inc. (Essentra Components)	THUMB NUT, KNURLED, #4-40 THREAD	2264
04M040070HNDIN34814 Richco, Inc. (Essentra Components)	HEX NUT M4 X .7 THREAD 3.2MM MAX	400
0525020CN Richco, Inc. (Essentra Components)	CAP NUT 1/4-20 THREAD .475 HEIGH	1000
04M060100HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, M6 X 1.	45756
0431218HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, 5/16-18	49432
0500632SCN Richco, Inc. (Essentra Components)	THUMB NUT KNURLED SLOTTED 6-32 T	1380
0537516CN Richco, Inc. (Essentra Components)	CAP NUT, NATURAL, NYLON 6/6, 3/8	15000
CGLN-PG11-BK Richco, Inc. (Essentra Components)	LOCK NUT 0.945" NYLON PG11	3129
0400632HNPC Richco, Inc. (Essentra Components)	HEX NUT 6-32 THREAD .120 HEIGHT	796
0531224CNB Richco, Inc. (Essentra Components)	CAP NUT 5/16-24 THREAD .530 HEIG	998
0600632DLWN Richco, Inc. (Essentra Components)	DECO WING NUT 6-32 THREAD 5/16 H	983
0701032SLN Richco, Inc. (Essentra Components)	LOCK AND FLANGE NUT, NATURAL, NY	4195
HN-M3-79 Richco, Inc. (Essentra Components)	HEX NUT 0.220" POLYCARBONATE M3	3872
0501024CN Richco, Inc. (Essentra Components)	CAP NUT 10-24 THREAD .400 HEIGHT	500

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