INDUSTRY COMPONENT

Fastener Body/Bolt

A threaded fastener component designed to secure machine parts through axial tension and shear resistance.

View Specifications

Component Specifications

Definition
A fastener body or bolt is a cylindrical mechanical component with external threading, typically featuring a head at one end for torque application. It functions by creating clamping force through tension when tightened with a nut or into a tapped hole, providing secure joint connections in machinery assemblies. Bolts are engineered to withstand axial loads, shear forces, and vibration while maintaining structural integrity.
Working Principle
Works on the principle of creating tensile preload through thread engagement. When tightened, the bolt stretches elastically, generating clamping force that holds components together. The friction between threads and bearing surfaces resists loosening, while the bolt's shank transfers shear loads across the joint interface.
Materials
Commonly manufactured from carbon steel (Grade 2, 5, 8), alloy steel (4140, 4340), stainless steel (304, 316), or titanium alloys. Surface treatments include zinc plating, hot-dip galvanizing, phosphate coating, or Dacromet for corrosion resistance.
Technical Parameters
  • Drive Type Hex, Torx, Phillips, Slotted
  • Head Style Hex, Socket, Button, Flange
  • Thread Type Metric (M), UNC, UNF
  • Length Range 5mm to 500mm
  • Diameter Range M3 to M64
  • Strength Grade 4.6, 8.8, 10.9, 12.9
Standards
ISO 898-1, ISO 4014, ISO 4017, DIN 931, DIN 933, ASME B18.2.1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Fastener Body/Bolt.

machine bolts industrial fasteners threaded components bolt specifications fastener engineering mechanical fastening assembly components Fastener Body/Bolt Fastener Body/Bolt in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Fastener System

A mechanical assembly designed to securely join and fasten panels together within a larger panel joint system.

View Product Details

Engineering Analysis

Risks & Mitigation
  • Thread stripping
  • Over-torquing damage
  • Corrosion failure
  • Fatigue cracking
  • Vibration loosening
  • Galvanic corrosion
FMEA Triads
Trigger: Insufficient torque during installation
Failure: Joint separation under load
Mitigation: Implement calibrated torque tools and torque verification procedures
Trigger: Corrosive environment exposure
Failure: Reduced cross-section and tensile failure
Mitigation: Specify corrosion-resistant materials and protective coatings
Trigger: Cyclic loading beyond fatigue limit
Failure: Crack initiation and propagation
Mitigation: Design for proper preload and use bolts with higher fatigue strength

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Thread tolerance 6g for external threads per ISO 965-1, length tolerance ±0.5mm for standard bolts
Test Method
Tensile testing per ISO 898-1, hardness testing, salt spray testing per ASTM B117, torque-tension testing

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

pH Sensor Assembly
Precision pH sensor assembly for automated monitoring and dosing systems in industrial applications
Load Cell Assembly
Precision load cell assembly for automated powder dispensing systems
Dust Collection Port
A dust collection port is a critical component in automated powder dispensing systems that captures airborne particulates at the source to maintain clean air quality and prevent cross-contamination.
Sensor Element
Core sensing component in industrial smart sensor modules that converts physical parameters into electrical signals for process monitoring and control.

Frequently Asked Questions

What is the difference between a bolt and a screw?

Bolts typically require nuts for assembly and are designed for through-holes, while screws engage directly with tapped holes. Bolts generally have unthreaded shank sections for shear resistance.

How do I select the correct bolt grade?

Select based on required tensile strength, shear capacity, and environmental conditions. Grade 8.8 is common for general machinery, while 10.9/12.9 grades are for high-stress applications. Consider corrosion requirements for material selection.

What causes bolt loosening in machinery?

Vibration, thermal cycling, insufficient preload, improper torque application, or joint relaxation. Use locking mechanisms like nylon inserts, thread lockers, or prevailing torque nuts for critical applications.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Request Manufacturing Insight for Fastener Body/Bolt

Fastener (Screw/Bolt) Fastener Clip