ABB Thomas & Betts Color-Keyed Copper Blank Tongue Lug, 400 Flex — Model 58177BTPFM350
The Color-Keyed 58177BTPFM350 is a copper blank tongue compression lug for 400 Flex conductors. The blank tongue allows field drilling of custom bolt hole configurations to meet specific installation requirements. Plain finish with a peep hole barrel for visual conductor seating confirmation. Rated for medium-voltage systems up to 35kV.
Key Specifications
- Product Type: Standard Barrel — Blank Tongue
- Material: Copper
- Finish: Plain
- Wire Size: 400 Flex
- Maximum Voltage: 35kV
- Die Code: 80
- Die Color Code: N/A
- End Style: Peep Hole
- Tongue: Blank (field drillable)
- Model: 58177BTPFM350
- UPC: 78620979992
Features
- Blank tongue for custom bolt hole drilling to match specific connection requirements
- Peep hole confirms full conductor seating before compression
- Standard barrel engineered for reliable 400 Flex conductor terminations
- Rated for medium-voltage systems up to 35kV
- Plain finish copper for versatile application compatibility
Applications
Used in power distribution equipment, switchgear, transformers, and industrial electrical systems where a custom bolt hole pattern is needed for 400 Flex copper conductor terminations at medium voltage.


