The Fuseholder,block, cataloged under National Stock Number 5920-01-171-7477, is classified within Federal Supply Class 5920 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5920-01-171-7477 |
| Primary Part Number | FH25BM |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | CANCELLED |
| Material | PLASTIC PHENOLIC BODY |
| Material | COPPER ALLOY CONTACT |
| Terminal Type and Quantity | 4 SCREW |
| Surface Treatment | SILVER CONTACT |
| Precious Material | SILVER |
| Precious Material and Location | CONTACT SURFACES SILVER |
| Accommodated Ferrule Diameter | 0.406 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.147 INCHES NOMINAL IN |
| Voltage in Volts | 250.0 |
| Internal Circuit Configuration and Pole Quantity | 2 POLE, MAINLINE, FUSED |
| Current Carrying Rating in Amps | 30.0 |
| Accommodated Fuse Length | 1.500 INCHES NOMINAL IN |
| Mounting Hole Quantity | 2 |
| Fuse Terminal Type Accommodated | FERRULE |
| Body Style | CLIP CONNECTED TYPE |
| Fuse Accommodation Quantity | 2 |
| Mounting Hole Style | IN-LINE ALONG THE WIDTH |
| Base Thickness | 0.250 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FH25BM | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 556002 | Littelfuse, Inc. (USA) |
| 129-513196-001 | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| A-A-55508 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| AA55508-002 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| 7755616P014 | Lockheed Martin Corporation Div Rms (USA) |
| 3835-2 | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
NSN 5920-01-171-7477 is a Fuseholder,block, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5920 (No Item Name Available). Status: cancelled.
NSN 5920-01-171-7477 has 7 cross-referenced part numbers: FH25BM (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 556002 (Littelfuse, Inc.), 129-513196-001 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc), A-A-55508 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), AA55508-002 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC) and 2 more.
There are 9 known substitutes for 5920-01-171-7477: 5920-00-153-9136, 5920-00-469-2648, 4820-00-627-2298 and 6 more. Verify interchangeability with system specifications before substitution.
Key specifications for FH25BM: Overall Height: 1.000 INCHES NOMINAL IN; Material: PLASTIC PHENOLIC BODY; Material: COPPER ALLOY CONTACT; Terminal Type and Quantity: 4 SCREW. 21 total characteristics are documented in the Federal Logistics Information System.
NSN 5920-01-171-7477 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.