Nuts

Part Number	Description / PDF	Quantity
0437524HN Richco, Inc. (Essentra Components)	HEX NUT 3/8-24 THREAD .330 HEIGH	1000
CGLN-M40-BK Richco, Inc. (Essentra Components)	LOCK NUT 1.969" NYLON M40	286
0700632LN Richco, Inc. (Essentra Components)	LOCKING HEX NUT 6-32 THREAD .200	0
1/2-13 AJ 6 APM Hexseal	HEX SEAL NUT 3/4" STEEL 1/2-13	0
CGLN-NPT-1-BK Richco, Inc. (Essentra Components)	LOCK NUT 1.653" NYLON NPT-1	123
0550020CN Richco, Inc. (Essentra Components)	CAP NUT 1/2-20 THREAD .810 HEIGH	999
M3566-SS RAF	19MM RD X 6MM X M8	115
0400256HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, #2-56 T	6234
0600632WN Richco, Inc. (Essentra Components)	WING NUT 6-32 THREAD .48 HEIGHT	994
MHNZ 004 B&F Fastener Supply	HEX NUT 0.276" M4	11100
0550013CNB Richco, Inc. (Essentra Components)	CAP NUT 1/2-13 THREAD .810 HEIGH	1000
21022-2 TE Connectivity AMP Connectors	NUT,HEX,SELF-LKG,THIN	400
0487520HJN Richco, Inc. (Essentra Components)	HEX JAM NUT 7/8-20 THREAD .125 H	846
04M100150HN Richco, Inc. (Essentra Components)	HEX NUT, NATURAL, NYLON, M10 X 1	7680
0600440DLWN Richco, Inc. (Essentra Components)	DECO WING NUT 4-40 THREAD 5/16 H	4888
0601032DLWN Richco, Inc. (Essentra Components)	DECO WING NUT 10-32 THREAD 7/16	995
0500440LCNB Richco, Inc. (Essentra Components)	LOCKING CAP NUT, #4-40 THREAD, .	402
0800632TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 6-32 THREAD .2	2249
P1975 Switchcraft / Conxall	LOCK NUT 5/16" COPPER ALLOY 1/4	243
1417661 Phoenix Contact	LOCK NUT 32.0MM POLYAMIDE M25	0

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