The Fuseholder,block, cataloged under National Stock Number 5920-00-758-5656, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-758-5656 |
| Primary Part Number | 77C709250P12 |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Spare Fuse Accommodation Quantity | 12 |
| Accommodated Fuse Length | 1.500 INCHES NOMINAL IN |
| Mounting Hole Quantity | 12 |
| Surface Treatment Document and Classification | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE CONTACT |
| Mounting Hole Style | IN-LINE ALONG THE WIDTH |
| Precious Material | SILVER |
| Material Document and Classification | QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE CONTACT |
| Material Document and Classification | MIL-P-3115, TYPE PBE-P-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE TERMINAL |
| Mounting Hole Diameter | 0.145 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Accommodated Ferrule Diameter | 0.406 INCHES NOMINAL IN |
| Fuse Terminal Type Accommodated | FERRULE |
| Surface Treatment | SILVER CONTACT |
| Precious Material and Location | CONTACT SURFACES SILVER |
| Center to Center Distance Between Outside Mounting Holes Along Width | 8.250 INCHES NOMINAL IN |
| Base Thickness | 0.088 INCHES MINIMUM AND 0.108 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 170 OR COPPER ALLOY 172 CONTACT |
| Material | PLASTIC PHENOLIC TERMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 77C709250P12 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 2859-12 | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
NSN 5920-00-758-5656 is a Fuseholder,block, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-00-758-5656 has 2 manufacturer part numbers on file: 77C709250P12 (Lockheed Martin Corporation Div Rms), 2859-12 (Cooper Bussmann, Llc Dba Cooper Industries).
Key specifications for 77C709250P12: Spare Fuse Accommodation Quantity: 12; Accommodated Fuse Length: 1.500 INCHES NOMINAL IN; Mounting Hole Quantity: 12; Overall Height: 0.908 INCHES MINIMUM AND 0.925 INCHES MAXIMUM IN. 17 specifications are documented in the U.S. Government catalog.
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.