The Fuseholder,block, cataloged under National Stock Number 5920-01-322-6539, is classified within Federal Supply Class 5920 (Fuses, Arrestors, Absorbers, and Protectors) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 — Fuses, Arrestors, Absorbers, and Protectors (FSG 59) |
| Manufacturers | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (CAGE 65586) |
| Parameter | Value |
|---|---|
| NSN | 5920-01-322-6539 |
| Primary Part Number | 129-047445-004 |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 129-047445-004 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| 6F30A1B | C/1 Advisory reference — outside the item-of-supply concept Cooper Bussmann, Llc Dba Cooper Industries |
| 128-074445-004 | C/1 Advisory reference — outside the item-of-supply concept Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 5920-01-322-6539 is a Fuseholder,block, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-01-322-6539 has 1 manufacturer part number on file: 129-047445-004 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-392-3548. Verify interchangeability with system specifications before substitution.
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.