Nuts

Part Number	Description / PDF	Quantity
0600632DLWN Richco, Inc. (Essentra Components)	DECO WING NUT 6-32 THREAD 5/16 H	983
7211 881 Altech Corporation	PG7 LOCKNUTLT GRAYPA	14864650
7211 496 Altech Corporation	LOCKNUT NYLON 1/2" NPT BLK	33245
4705 Keystone Electronics Corp.	HEX NUT 3/8" STEEL 10-32	8111500
NY HN 440 B&F Fastener Supply	HEX NUT 1/4" NYLON 4-40	83471
MHNZ 002 4 B&F Fastener Supply	HEX NUT 0.157" M2	20100
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
0501032SCN Richco, Inc. (Essentra Components)	THUMB NUT KNURLED SLOTTED 10-32	3900
90480A005 TubeDepot	440 MACHINE SCREW NUT	1039
0625020WNC Richco, Inc. (Essentra Components)	WING NUT 1/4-20 THREAD 29/64 HEI	990
1670484 Phoenix Contact	HEX NUT PLASTIC PG13.5	50
0525020SCN Richco, Inc. (Essentra Components)	THUMB NUT KNURLED SLOTTED 1/4-20	1000
06M120175WN Richco, Inc. (Essentra Components)	WING NUT M12 X 1.7 THREAD 22.7MM	1000
0401224HN Richco, Inc. (Essentra Components)	HEX NUT 12-24 THREAD .207 HEIGHT	925
0501032CNB Richco, Inc. (Essentra Components)	CAP NUT 10-32 THREAD .400 HEIGHT	999
7211 486 Altech Corporation	LOCKNUT NYLON 1/2" NPT GRY	12284850
1416009 Phoenix Contact	HEX NUT 21.0MM BRASS NPT-3/8"	50
7/16-20 AJ 6 APM Hexseal	HEX SEAL NUT 11/16" STEEL 7/16	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