Nuts

Part Number	Description / PDF	Quantity
90675A195 TubeDepot	1032 MACHINE SCREW KEPS NUT	491
06M040070DLWN Richco, Inc. (Essentra Components)	DECO LOCK WING NUT M4 X .7 THRE	0
CGLN-NPT-3/8-BK Richco, Inc. (Essentra Components)	LOCK NUT 0.866" NYLON NPT-3/8	1308
0543714CN Richco, Inc. (Essentra Components)	CAP NUT 7/16-14 THREAD .810 HEIG	1000
0450013HJN Richco, Inc. (Essentra Components)	JAM NUTS, NATURAL, NYLON 6/6, 1/	4720
0600832DLWN Richco, Inc. (Essentra Components)	DECO WING NUT 8-32 THREAD 5/16 H	3990
5TKR3S J.W. Winco	STAINLESS STEEL KNURLED NUT	100
HNZ 038 16 B&F Fastener Supply	HEX NUT 3/8-16	90
T2160 Switchcraft / Conxall	KNURLED NUT 13/32" COPPER ALLOY	6463
99437A165 TubeDepot	M6 CAPTIVE NUT	99
0850013TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 1/2-13 THREAD	1000
0837516TNA Richco, Inc. (Essentra Components)	THUMB NUT KNURLED 3/8-16 THREAD	1000
1737010000 Weidmuller	LOCK NUT 1.142" BRASS M25	66
04M030050WFHN Richco, Inc. (Essentra Components)	HEX FLANGE NUT M3 X .5 THREAD 6.	4683
0701024SLN Richco, Inc. (Essentra Components)	LOCK AND FLANGE NUT, NATURAL, NY	9740
7211 497 Altech Corporation	LOCKNUT NYLON 3/4"NPT BLK	283650
90675A007 TubeDepot	632 MACHINE SCREW KEPS NUT	450
7211 884 Altech Corporation	PG135 LOCKNUTLTGRAYPA	12064250
90480A009 TubeDepot	832 MACHINE SCREW NUT	231
A8229 American Electrical, Inc.	LOCK NUT NYLON PG29	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