| 24K | 76655 | PORTER H K CO INC ELECTRICAL DIV AMBRIDGE WORKS |
| 404A | 90759 | NI INDUSTRIES INC BOWERS MFG CO DIV |
| 59066D41-115 | 00742 | AIR PRODUCTS & CHEMICALS, INC |
| 52C18 | 56501 | ABB INSTALLATION PRODUCTS INC |
| 779 | 80603 | METROPOLITAN ELECTRONIC AND INSTRUMENT CO |
| 59066D41-115 | 81336 | CHIEF OF ENGINEERS DEPT OF ARMY |
| 8470 | 03743 | EGS ELECTRICAL GROUP APPLETON DIV |
| W-J-800 | 81348 | FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC |