Nuts

Part Number	Description / PDF	Quantity
1697480000 Weidmuller	LOCK NUT 1.181" POLYAMIDE PG16	0
0410011PJN Richco, Inc. (Essentra Components)	HEX JAM NUT WASHER FACE 1-11-1/2	1000
3/8-32X1/2 PANEL NUT B&F Fastener Supply	HEX NUT 1/2" 3/8-32	0
6000487 Altech Corporation	PG48 LOCKNUT BN	40
6104732 Altech Corporation	REDUCER M32 TOPG16 RIBBED NICKEL	0
6010140 Altech Corporation	M40 LOCKNUT STAINLESS STEEL INOX	0
CAGNUT1224-50 Hammond Manufacturing	CAGE NUT STEEL 50/PK	0
6604732 Altech Corporation	ADAPTER M32 TOPG29 NICKEL-PLATED	0
6102166 Altech Corporation	REDUCERPG29 TOPG16 HEX NICKELPLA	0
6402333 Altech Corporation	ADAPTER M32 TO NPT 1" NICKEL-PLA	0
7005305 Altech Corporation	REDUCERPG135 TOPG9POLYAMIDE LIGH	100
7004206 Altech Corporation	ENLARGERPG29 TOPG36POLYAMIDE LIG	0
6402089 Altech Corporation	ADAPTER NPT 1" TOPG21 NICKEL-PLA	0
6004504 Altech Corporation	M50 LOCKNUT BN	795
6011116 Altech Corporation	M16 LOCKNUT RIBBED BN	2200
18353.9 Conta-Clip	NPT3/4" LOCKNUT NPB	0
6604814 Altech Corporation	ADAPTERPG11 TO M25 NICKEL-PLATED	50
6604720 Altech Corporation	ADAPTER M20 TOPG11 NICKEL-PLATED	0
6200363 Altech Corporation	ENLARGER M63 TO M75 HEX NICKEL-P	0
3-1616337-8 TE Connectivity Aerospace Defense and Marine	50405021=NUT 5/40 3/16-HEX 1/1	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