| 24H | 76655 | PORTER H K CO INC ELECTRICAL DIV AMBRIDGE WORKS |
| 403A | 90759 | NI INDUSTRIES INC BOWERS MFG CO DIV |
| 52C14 | 56501 | ABB INSTALLATION PRODUCTS INC |
| 773 | 28488 | RACO, A DIVISION OF HUBBELL INCORPORATED(DELAWARE) |
| 8468 | 03743 | EGS ELECTRICAL GROUP APPLETON DIV |
| FED-STD-128 | 06542 | FEDERAL STANDARDS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |
| WJ800 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |