(not all inclusive)
| MATERIALS: | DRIVES: | |||
| A | Structural Steel | PH | Phillips Drive | |
| 0 | Steel | SL | Slotted Drive | |
| 1 | Stainless Steel | SQ | Square | |
| 2 | Brass | |||
| 3 | Aluminum | FINISHES: | ||
| 4 | Nylon | Z | Zinc Plated | |
| P | Plain | |||
| FASTENER STYLES: | YZ | Yellow Chromate | ||
| CS | Cap Screw | C | Cadmium | |
| MS |
Machine Screw |
N | Nickel | |
| TS | Tapping Screw | B | Black Oxide | |
| WS | Wood Screw | BZ | Black Zinc | |
| CB | Carriage Bolt | N | Nickel Plated Brass | |
| SC*CS | Socket Cap Screw | A | Antique Bronze | |
| SC*SS | Socket Set Screw | S | Silicon Bronze | |
| SB | Socket Shoulder Bolt | |||
| TK | Self-Drilling Screw | GRADE: | ||
| TC | Thread-cutting or | 2 | Grade 2 | |
| Thread-forming Screw | 5 | Grade 5 | ||
| RD | All thread Rod | 8 | Grade 8 | |
| AB | Anchor Bolt | 7 | B7 | |
| UB | U Bolt | 2H | 2H Hex Nuts | |
| LS | Lag Screw | |||
| FW | Flat Washer | MISCELLANEOUS: | ||
| LW | Lock Washer | MHT | Martin Hand Tool | |
| HN | Hex Nut | BLD | Buldex | |
| LN | Lock Nut | C | National Course | |
| EB | Eye Bolt | F | National Fine or SAE Thread | |
| EN | Eye Nut | U | USS Flat Washer | |
| FS | Floor Screw | S | SAE Flat Washer | |
| DE | Double Ended | |||
| HEAD STYLES : | LHT | Left-Hand Threaded | ||
| RH | Round Head | ACM | Acme | |
| FH | Flat Head | |||
| HH | Hex Head | |||
| HWH | Hex Washer Head | |||
| PH | Pan Head | |||
| OH | Oval Head | |||
| TH | Truss Head | |||
| BH | Button Head | |||
| BD | Binding Head | |||
| FI | Fillister Head | |||
| SQ | Square Head | |||