Overview
The F+C Heavy Duty Flange Head Bolts & Nuts Coupling Industrial (SKU: B-3-8-300) is a complete fastener set designed for industrial coupling and machinery applications. This lot of 8 units provides matched pairs of flange head bolts and hex nuts engineered for secure assembly of flexible shaft couplings, pump mounts, motor bases, and similar mechanical systems requiring vibration resistance and reliable clamping force.
Key Features
- Flange Head Design: Integrated washer-like flange beneath bolt head distributes clamping load evenly and eliminates the need for separate washers in most applications
- Hex Head Style: Standard hex head bolts with matching hex nuts for simple, wrench-friendly assembly and serviceability
- Heavy Duty Construction: Industrial-grade steel fasteners built to withstand repetitive stress, vibration, and high-load tensioning
- Complete Set: Lot of 8 matched bolt-and-nut pairs ready for immediate installation
- Vibration Resistant: Flange design helps prevent fastener loosening under cyclic loading common in rotating machinery
Technical Specifications
| Product Type | Flange Head Bolts & Hex Nuts Set |
| Brand | F+C |
| SKU | B-3-8-300 |
| Quantity per Lot | 8 bolt-and-nut pairs (8 bolts + 8 nuts) |
| Fastener Type | Hex Head Flange Bolts with Hex Nuts |
| Head Style | Hexagonal with Integrated Flange |
| Material | Steel (industrial-grade) |
| Application | Flexible couplings, machinery assembly, industrial fastening |
| Condition | New, No Box |
Typical Applications
- Flexible shaft coupling assembly and maintenance
- Pump and motor coupling connection
- Industrial machinery base and bracket fastening
- Drive shaft coupling systems
- Equipment requiring high vibration resistance
- Heavy machinery reconstruction and retrofit projects
Compatibility & Replacements
Compatible With
- Flexible shaft couplings (all standard industrial types)
- Motor and pump coupling flanges
- Standard hex wrench and socket tools (ISO/SAE sizing)
- Industrial machinery assembly frames
- Most OEM coupling assemblies requiring flange fasteners
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or coupling manufacturer before ordering to ensure correct size, thread pitch, and load rating match your application requirements.
Works With
- Standard hex wrenches and socket sets
- Impact drivers and pneumatic tools
- Torque wrenches for precision tensioning
- Industrial assembly and maintenance procedures following ISO 898 and ASME standards
- Standard coupling nuts and lock washers (where additional security is required)
