Introduction
This manual provides essential information for the safe and effective use of the Facom ENH.305/8 Impact Bit. Please read these instructions carefully before use and retain them for future reference.
Product Overview
The Facom ENH.305/8 is a durable impact bit designed for use with impact wrenches. It features a 12.7 mm (1/2 inch) hexagon socket drive and a 5/8 inch hexagon socket output. This Series 3 impact bit is burnished for enhanced durability and performance.

Image 1: The Facom ENH.305/8 Impact Bit. This image displays the black, burnished metal impact bit, showing its hexagonal drive end and hexagonal output end, designed for heavy-duty applications.
Setup
- Select the Correct Tool: Ensure you are using an impact wrench compatible with a 12.7 mm (1/2 inch) square drive.
- Insert the Bit: Align the 12.7 mm (1/2 inch) hexagon drive end of the Facom ENH.305/8 impact bit with the drive anvil of your impact wrench. Push firmly until it clicks into place or is securely seated.
- Verify Connection: Gently pull on the bit to confirm it is securely attached to the impact wrench and will not detach during operation.
Operating Instructions
- Safety First: Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves, when operating power tools.
- Match Fastener Size: Ensure the 5/8 inch hexagon socket output of the bit matches the size of the fastener you intend to drive or remove.
- Position the Bit: Place the bit squarely onto the head of the fastener. Avoid angled engagement, which can lead to stripping or damage.
- Apply Power: Activate the impact wrench. Apply steady, firm pressure to keep the bit engaged with the fastener.
- Monitor Progress: Observe the fastener's movement. Release the trigger once the desired torque is achieved or the fastener is fully seated/removed.
Note: This impact bit is designed for high-torque applications. Use caution and follow all safety guidelines provided with your impact wrench.
Maintenance
- Cleaning: After each use, wipe the impact bit clean of any dirt, grease, or debris. A dry cloth is usually sufficient.
- Inspection: Regularly inspect the bit for signs of wear, cracks, or damage. Pay close attention to the hexagonal drive and output ends.
- Storage: Store the impact bit in a dry environment to prevent rust. Keep it away from corrosive materials.
- Replacement: If the bit shows significant wear or damage, replace it immediately to ensure safe and effective operation. Do not attempt to repair damaged bits.
Troubleshooting
The Facom ENH.305/8 Impact Bit is a passive tool component. Most operational issues are related to the impact wrench or the fastener itself.
- Bit not engaging fastener: Ensure the fastener head is clean and free of obstructions. Verify the bit size matches the fastener.
- Bit slipping: Check for wear on the bit's hexagonal output. Ensure the bit is fully seated on the fastener. Reduce impact wrench speed if necessary.
- Bit not staying in impact wrench: Verify the impact wrench's drive anvil is clean and functioning correctly. Ensure the bit is fully inserted and locked into place.
Specifications
| Feature | Detail |
|---|---|
| Brand | Facom |
| Model Number | ENH.305/8 |
| Type | Impact Bit, Series 3 |
| Drive Size | 12.7 mm (1/2 inch) Hexagon Socket |
| Output Size | 5/8 inch Hexagon Socket |
| Material | Metal |
| Finish Type | Burnished / Painted |
| Length (L) | 50 mm |
| Item Weight | 65 g (approximately 2.29 ounces) |
| Product Dimensions | Approximately 2.99 x 3.41 x 0.79 inches (packaging dimensions, actual bit is 50mm long) |
| Number of Pieces | 1 |
| Measurement System | Inch |
Warranty and Support
For warranty information and customer support regarding the Facom ENH.305/8 Impact Bit, please refer to the official Facom website or contact your authorized Facom dealer. Specific warranty terms may vary by region and retailer.
For further assistance, please visit the Facom official website.