The Contact Assembly,electrical, cataloged under National Stock Number 5999-01-588-5913, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Item Name | Contact Assembly,electrical |
| FSC / FSG | 5999 — Miscellaneous Electrical and Electronic Components (FSG 59) |
| Manufacturers | Siemens Energy and Automation Industrial and Logistics Systens Div (CAGE 082D8); Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division (CAGE 0ACF4) |
| Parameter | Value |
|---|---|
| NSN | 5999-01-588-5913 |
| Primary Part Number | 5SX9100 |
| Item Name | Contact Assembly,electrical |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | J |
| Part Number | Manufacturer |
|---|---|
| SY1557-S=WC1.A5 ITEM 4 | Siemens Energy and Automation Industrial and Logistics Systens Div (USA) |
| 5SX9100 PRIMARY | Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division (USA) |
NSN 5999-01-588-5913 is a Contact Assembly,electrical, manufactured by Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-588-5913 has 2 manufacturer part numbers on file: SY1557-S=WC1.A5 ITEM 4 (Siemens Energy and Automation Industrial and Logistics Systens Div), 5SX9100 (Siemens Energy & Automation, Inc. Div Siemens Ind Services, Siemens Sales Division).
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.