| Feature | Suffix |
| Static eliminator spring | SE |
| Hot-dip tin plating (pad only) | TP |
| Tin plate all | TPA |
| Silver plating | AG |
| Center-formed pad | CF |
| Side-formed pad | SF |
| Contact surface on both sides of pad | DF |
| Pads at angles | degree deviation from parallel |
| Change to 1/2" hardware | 1/2HW |
| U-bolts in lieu of hex bolts | U |
| Schedule 80 accommodation | H |
| Special construction | SP |
