Nuts

Part Number	Description / PDF	Quantity
1736970000 Weidmuller	LOCK NUT 2.362" POLYAMIDE M50	0
6402332 Altech Corporation	ADAPTER M32 TO NPT 34" NICKEL-PL	0
1-21018-6 TE Connectivity AMP Connectors	NUT,HEX,MACH SCREW	0
6604836 Altech Corporation	ADAPTERPG36 TO M40 NICKEL-PLATED	0
6604849 Altech Corporation	ADAPTERPG48 TO M63 NICKEL-PLATED	0
21019-4 TE Connectivity AMP Connectors	NUT,HEX,HEAVY	0
1697470000 Weidmuller	LOCK NUT 1.062" POLYAMIDE PG13.5	0
6200095 Altech Corporation	ENLARGERPG21 TOPG29 ROUND NICKEL	0
1616339-3 TE Connectivity Aerospace Defense and Marine	50410070=NUT 10-32 3/8-A+FLATS	0
7004207 Altech Corporation	ENLARGERPG36 TOPG42POLYAMIDE LIG	0
6604708 Altech Corporation	ADAPTER M20 TOPG21 NICKEL-PLATED	0
6010132 Altech Corporation	M32 LOCKNUT STAINLESS STEEL INOX	20
7005311 Altech Corporation	REDUCERPG21 TOPG135POLYAMIDE LIG	0
06M060100WN Richco, Inc. (Essentra Components)	WING NUT M6 X 1 THREAD 16.0MM HE	992
7004300 Altech Corporation	ENLARGER M12 TO M16POLYAMIDE LIG	0
7008531 Altech Corporation	REDUCER M32 TO M20POLYAMIDE LIGH	0
7008548 Altech Corporation	REDUCER M50 TO M25POLYAMIDE LIGH	0
21019-1 TE Connectivity AMP Connectors	NUT,HEX,HEAVY	0
851-DLH Bud Industries, Inc.	CLIP NUT M6	2100
SBNUT25-C Panduit Corporation	1/4-20 UNC HEX NUT SILICONE BRON	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