Mark's Locksmith
| Fanal | A1, A3, 1170, 1022, 1551, 1552, R63, R64 | |
| Fenco | file cabinet | 1003M |
| Federal | padlock | 1045 |
| Fenestra | 1007RMA, 1007RMB | |
| Ferum | phone lock | 1000V |
| FIC | utility locks | OKB120 |
| Filing cabinets | Look under specific name | |
| First Watch | CO7, CO68, 1098M, Y32, M1, A1045, 1041TR | |
| Fleur de lys | 1022,, 1176, 1069N | |
| Fold-A-Cover | truck cover | Y103 |
| Ford | tractor | 1570 |
| Fork lift | 1430, 1496, 1583, also see individual name brand | |
| Fortress | 1176, KW1-IMP, 1069N, 1176, 1145, 1041C, 1045 | |
| Fortress | 1098M, D1054K, 1092, 192, R1054E, 1022 | |
| Forward lock | 1001EH | |
| Fox Police lock | 1011, 1011A, 1079 | |
| Fraim | See Ilco #60 | 1079, 1073, 1073K |
| Franklin | S625P | |
| Freezer | pre-cuts | See Blue Dog #75½ |
| Frigidaire | freezer | 1041T, 1069N, 1069G |
| Fulton | DO1M, B-9, 1098L, B-13, 1098DB, O1122, O1122AR, 1000T, 1001JL | |
| Fury | 1022 |