Nuts

Part Number	Description / PDF	Quantity
6604742 Altech Corporation	ADAPTER M50 TOPG36 NICKEL-PLATED	0
6604820 Altech Corporation	ADAPTERPG16 TO M32 NICKEL-PLATED	0
6011011 Altech Corporation	PG11 LOCKNUT RIBBED BN	0
1694080000 Weidmuller	LOCK NUT 0.709" BRASS PG9 PK/100	0
6604706 Altech Corporation	ADAPTER M32 TOPG135 NICKEL-PLATE	0
0437518PJN Richco, Inc. (Essentra Components)	HEX JAM NUT 3/8-18 THREAD .280 H	1000
6200340 Altech Corporation	ENLARGER M40 TO M50 HEX NICKEL-P	0
6402046 Altech Corporation	ADAPTER NPT 12" TOPG11 NICKEL-PL	50
04M060100HNDIN34814 Richco, Inc. (Essentra Components)	HEX NUT M6 X 1 THREAD 5.2MM MA	0
6402326 Altech Corporation	ADAPTER M25 TO NPT34" NICKEL-PLA	0
6604808 Altech Corporation	ADAPTERPG7 TO M16 NICKEL-PLATED	0
6604705 Altech Corporation	ADAPTER M40 TOPG16 NICKEL-PLATED	0
0425020HJN Richco, Inc. (Essentra Components)	HEX JAM NUT 1/4-20 THREAD .158 H	930
6200350 Altech Corporation	ENLARGER M50 TO M63 HEX NICKEL-P	5
6011007 Altech Corporation	PG7 LOCKNUT RIBBED BN	0
21022-4 TE Connectivity AMP Connectors	NUT,HEX,SELF-LKG,THIN	0
0625020WNA Richco, Inc. (Essentra Components)	WING NUT 1/4-20 THREAD .63 HEIGH	1000
6200220 Altech Corporation	ENLARGER M20 TO M25 ROUND NICKEL	0
1-22202-5 TE Connectivity AMP Connectors	NUT,HEX,JAM	0
6102093 Altech Corporation	REDUCERPG21 TOPG11 HEX NICKELPLA	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