Precision Engineered Fastening Solutions
Custom Fasteners Manufacturing
Fedele Autocore specializes in custom fastener manufacturing, producing precision-engineered bolts, screws, nuts, studs, and specialty fasteners designed to exact specifications. Our comprehensive manufacturing capabilities combine advanced CNC machining, cold heading, thread rolling, and heat treatment processes to deliver high-quality fasteners for demanding applications.
With state-of-the-art equipment including multi-station cold headers, CNC thread rollers, and precision thread cutting machines, we manufacture fasteners from M2 to M36 in lengths up to 300mm. Our expertise spans metric and imperial threads, custom head configurations, special materials, and unique geometries that standard fasteners cannot accommodate.
From automotive assembly bolts to aerospace-grade fasteners and industrial equipment hardware, we serve manufacturers across 21 countries, delivering custom fastening solutions with superior strength, precise tolerances, and exceptional reliability.
Key Advantages & Benefits
Custom fasteners deliver optimized performance for specialized applications.
Custom Design
Engineered to exact specifications with custom threads, head styles, materials, and coatings for unique applications.
Superior Strength
Grades from 4.8 to 12.9 with precise tensile strength, hardness, and torque specifications for critical assemblies.
Precision Threading
CNC thread rolling and cutting ensures perfect thread form, pitch accuracy, and smooth engagement every time.
Material Versatility
Manufacture from carbon steel, alloy steel, stainless steel, brass, aluminum, and exotic alloys as required.
Surface Treatments
Zinc plating, galvanizing, black oxide, Dacromet, and specialty coatings for corrosion resistance and aesthetics.
Flexible Volumes
From small batches of 100 pieces to high-volume production runs exceeding 1 million fasteners annually.
Types of Custom Fasteners
Comprehensive range of precision-manufactured fastening solutions.
Custom Bolts
Precision-engineered bolts with custom head styles, thread configurations, and material specifications.
- Hex head & socket head bolts
- Shoulder bolts & carriage bolts
- Flange bolts & U-bolts
- Custom head configurations
Custom Screws
Specialized screws for assembly applications requiring unique dimensions or performance characteristics.
- Machine screws & set screws
- Socket cap screws
- Shoulder screws & thumb screws
- Self-tapping & thread-forming
Custom Nuts
Precision nuts in various configurations and materials to match custom bolt specifications.
- Hex nuts & lock nuts
- Flange nuts & cap nuts
- Weld nuts & cage nuts
- Custom thread pitches
Studs & Threaded Rods
Double-ended studs and continuous threaded rods for specialized assembly requirements.
- Full thread & partial thread studs
- Threaded rods & all-thread
- Weld studs & press-fit studs
- Custom lengths & diameters
Specialty Fasteners
Unique fastening solutions engineered for specific applications and assembly challenges.
- Custom shoulder fasteners
- Captive & retained fasteners
- Quick-release fasteners
- Multi-diameter shafts
Washers & Pins
Custom washers, spacers, and precision pins for complete fastening assemblies.
- Flat & spring washers
- Lock washers & wave washers
- Dowel pins & clevis pins
- Cotter pins & split pins
Fastener Tensile Strength & Property Class Comparison
Compare tensile strength, yield limits, hardness, and engineering load limits across ISO and ASTM fastener grades.
| Property Class / Standard | Nominal Tensile Strength (Rm) | Yield Strength Ratio (Rp0.2) | Core Hardness | Typical Sourcing Application |
|---|---|---|---|---|
| Class 4.8 / Grade 2 | 400 - 420 MPa (~60,000 PSI) | 320 MPa (Yield ratio: 80%) | HRB 71 - 95 | Light assembly, sheet metal covers, consumer goods |
| Class 8.8 (High Tensile) | 800 - 830 MPa (~120,000 PSI) | 640 MPa (Yield ratio: 80%) | HRC 22 - 32 (HB 250-320) | Automotive chassis, machine frames, engine brackets |
| Class 10.9 (Structural) | 1,000 - 1,040 MPa (~150,000 PSI) | 900 MPa (Yield ratio: 90%) | HRC 32 - 39 (HB 300-380) | Suspension links, cylinder heads, heavy industrial gearboxes |
| Class 12.9 (Ultra High) | 1,220 MPa (~177,000 PSI) | 1,100 MPa (Yield ratio: 90%) | HRC 39 - 44 (HB 380-440) | High-stress die tooling, hydraulic heads, extreme clamping |
| ASTM A193 B7 (Alloy) | 860 MPa (~125,000 PSI) | 725 MPa | HRC 35 max (HB 321 max) | High-temperature & high-pressure oil/gas valves & flanges |
| Titanium Gr 5 (Ti-6Al-4V) | 950 - 1,050 MPa (~145,000 PSI) | 880 MPa | HRC 36 | Aerospace flight-critical hardware, lightweight motorsport |
Fastener Production Processes
Advanced manufacturing techniques for superior quality fasteners.
Cold Heading
High-speed forming creates heads and profiles without material waste
Thread Rolling
Superior thread strength through grain flow and work hardening
CNC Machining
Precision machining for complex geometries and tight tolerances
Heat Treatment
Controlled hardening and tempering for specified strength grades
Advanced Manufacturing Capabilities
Precision equipment and experienced engineers for optimal results.
Materials for Custom Fasteners
Extensive range of materials for diverse fastener applications.
Carbon Steel
Grades 4.8 to 12.9 for general to high-strength applications
Alloy Steel
Enhanced strength & fatigue resistance for critical loads
Stainless Steel
304, 316, 410, 17-4PH for corrosion-resistant applications
Brass & Copper
Non-magnetic, electrical conductivity, decorative
Aluminum
Lightweight fasteners for aerospace & automotive
Titanium
High strength-to-weight, corrosion resistant, biocompatible
Industries & Uses
Custom fasteners for demanding applications across industries.
Automotive Assembly
- Engine & transmission bolts
- Chassis fasteners
- Brake system components
- Interior trim fasteners
- Exhaust system hardware
Aerospace
- Aircraft structural fasteners
- High-strength titanium bolts
- Engine mount hardware
- Precision aerospace screws
- Safety-critical fasteners
Industrial Equipment
- Heavy machinery fasteners
- Equipment mounting bolts
- High-temperature applications
- Vibration-resistant hardware
- Custom assembly fasteners
Construction
- Structural bolts & anchors
- Heavy-duty fasteners
- Galvanized hardware
- Concrete anchoring systems
- Outdoor weatherproof fasteners
Electronics & IT
- Precision miniature fasteners
- Equipment rack hardware
- EMI/RFI shielded fasteners
- Stainless micro-screws
- Cable management hardware
Medical Equipment
- Surgical instrument fasteners
- Medical cart hardware
- Sterilizable stainless fasteners
- Diagnostic equipment screws
- Biocompatible titanium bolts
Fastener Manufacturing Specifications
Precision capabilities for custom fastener production.
Size Range
M2 to M36 metric
#0 to 1" imperial
Length Range
3mm to 300mm
Custom lengths available
Strength Grades
4.8, 8.8, 10.9, 12.9
Custom grades available
Production Volume
100 to 1,000,000+ pieces
Flexible batch sizes
Comprehensive Quality Control
Rigorous testing ensuring every fastener meets specifications.
Trusted Partner Across Sectors
Delivering precision custom fasteners worldwide.
Automotive
Aerospace
Industrial
Construction
Electronics
Medical
Oil & Gas
Energy
Custom Fasteners FAQs
Answers to common questions about tolerances, materials, order quantities, and quality assurance.
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Need Custom Fastening Solutions?
Contact Fedele Autocore for professional custom fastener manufacturing. Our expert team is ready to engineer the perfect fastening solution for your specific application.
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