The Terminal,feedthru, cataloged under National Stock Number 5940-01-039-9530, is classified within Federal Supply Class 5940 (Lugs, Terminals, and Terminal Strips) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Circuit Components Inc.. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5940-01-039-9530 |
| Primary Part Number | B4991-1000G |
| Item Name | Terminal,feedthru |
| FSC / FSG | 5940 / 59 — Lugs, Terminals, and Terminal Strips |
| Manufacturer | Circuit Components Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-G-45204 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL SECOND LAYER |
| Surface Treatment Document and Classification | QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE MOUNTING FACILITY SECOND LAYER |
| Precious Material | GOLD |
| Precious Material and Weight | 0.040 GOLD GRAINS, TROY |
| Electrical Insulation Feature | UNINSULATED |
| Conductor Accommodation Type | SQUARE PIN ALL ENDS |
| Largest Width | 0.025 INCHES SINGLE END IN |
| Surface Treatment | NICKEL OVERALL FIRST LAYER |
| Surface Treatment | GOLD OVERALL SECOND LAYER |
| Precious Material and Location | EXTERNAL SURFACES OUTER LAYER GOLD |
| Material | COPPER ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B4991-1000G PRIMARY | Circuit Components Inc. (USA) |
| SS-29-105 PRIMARY | Bead Industries Inc Div Bead Electronics (USA) |
| 027-0505-144 PRIMARY | Dcx-Chol Enterprises, Inc. Dba Masterite Division (USA) |
| Reference | Meaning |
|---|---|
| 10034320-105 | 7/2 Vendor item drawing reference U.S. Government activity |
| 978515-1C | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5940-01-039-9530 is a Terminal,feedthru, manufactured by Circuit Components Inc., classified under FSC 5940, Lugs, Terminals, and Terminal Strips. Status: active.
NSN 5940-01-039-9530 has 3 manufacturer part numbers on file: B4991-1000G (Circuit Components Inc.), SS-29-105 (Bead Industries Inc Div Bead Electronics), 027-0505-144 (Dcx-Chol Enterprises, Inc. Dba Masterite Division).
1 possible match (shared part number, not a government interchangeability claim): 5940-01-146-9270. Verify interchangeability with system specifications before substitution.
Key specifications for B4991-1000G: Surface Treatment Document and Classification: MIL-G-45204 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL SECOND LAYER; Surface Treatment Document and Classification: QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE MOUNTING FACILITY SECOND LAYER; Precious Material: GOLD; Precious Material and Weight: 0.040 GOLD GRAINS, TROY. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.