Nuts

Part Number	Description / PDF	Quantity
7211 487 Altech Corporation	LOCKNUT NYLON 3/4"NPT GRY	16802125
04M200150WFHN Richco, Inc. (Essentra Components)	HEX FLANGE NUT, M20 X 1.5 THREAD	1000
0431218HJN Richco, Inc. (Essentra Components)	HEX JAM NUT 5/16-18 THREAD .190	990
MHNZ 003 B&F Fastener Supply	HEX NUT 0.217" M3	15200
7223-SS RAF	1/2HEX X 11/32 X 10-24 THD	245
0456218HJN Richco, Inc. (Essentra Components)	HEX JAM NUT 9/16-18 THREAD .250	980
0500632LCNB Richco, Inc. (Essentra Components)	LOCKING CAP NUT, #6-32 THREAD, .	498
0525020CNB Richco, Inc. (Essentra Components)	CAP NUT 1/4-20 THREAD .475 HEIGH	3500
7211 984 Altech Corporation	M40 LOCKNUT LT GRAYPA	323
3003001 Phoenix Contact	NUT HEX M5	0
7211 979 Altech Corporation	M12 LOCKNUT LT GRAYPA	11711850
0537524CNB Richco, Inc. (Essentra Components)	CAP NUT 3/8-24 THREAD .620 HEIGH	1000
0801024TNAB Richco, Inc. (Essentra Components)	THUMB NUT, KNURLED, #10-24 THREA	2000
1414570 Phoenix Contact	LOCK NUT 26.0MM POLYAMIDE M20	265
0487514HJN Richco, Inc. (Essentra Components)	JAM NUTS, NATURAL, NYLON 6/6, 7/	3000
HN-8-32-01 Richco, Inc. (Essentra Components)	HEX NUT 0.338" NYLON 8-32	171
0501032CN Richco, Inc. (Essentra Components)	CAP NUT 10-32 THREAD .400 HEIGHT	771
295 Bud Industries, Inc.	CLIP NUT 10-32	59867800
0500440SCN Richco, Inc. (Essentra Components)	THUMB NUT KNURLED SLOTTED 4-40 T	896
90675A009 TubeDepot	832 MACHINE SCREW KEPS NUT	637

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