The Fuseholder,block, cataloged under National Stock Number 5920-00-359-9771, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5920-00-359-9771 |
| Primary Part Number | 7755616-18 |
| Item Name | Fuseholder,block |
| FSC / FSG | 5920 / 59 — Fuses, Arrestors, Absorbers, and Protectors |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Accommodated Fuse Length | 1.500 INCHES NOMINAL IN |
| Mounting Hole Quantity | 6 |
| Surface Treatment Document and Classification | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE CONTACT |
| Body Style | CLIP CONNECTED TYPE |
| Internal Circuit Configuration and Pole Quantity | 6 POLE, MAINLINE, FUSED |
| Mounting Hole Style | IN-LINE ALONG THE WIDTH |
| Precious Material | SILVER |
| Voltage in Volts | 600.0 |
| Material Document and Classification | QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE CONTACT |
| 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 TERMINAL |
| Surface Treatment | SILVER CONTACT |
| Current Carrying Rating in Amps | 60.0 |
| Precious Material and Location | CONTACTS SILVER AND TERMINALS SILVER |
| Center to Center Distance Between Outside Mounting Holes Along Width | 3.500 INCHES NOMINAL IN |
| Base Thickness | 0.188 INCHES NOMINAL IN |
| Material | COPPER ALLOY 170 OR COPPER ALLOY 172 CONTACT |
| Material | COPPER ALLOY TERMINAL |
| Terminal Type and Quantity | 12 TAB, SOLDER LUG |
| Fuse Accommodation Quantity | 6 |
| 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 |
|---|---|
| 3514-6 | Cooper Bussmann, Llc Dba Cooper Industries (USA) |
| 7755616-18 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 550033 | Littelfuse, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 7755616P018 | C/1 Advisory reference — outside the item-of-supply concept Lockheed Martin Corporation Div Rms |
NSN 5920-00-359-9771 is a Fuseholder,block, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5920, Fuses, Arrestors, Absorbers, and Protectors. Status: active.
NSN 5920-00-359-9771 has 3 manufacturer part numbers on file: 3514-6 (Cooper Bussmann, Llc Dba Cooper Industries), 7755616-18 (Lockheed Martin Corporation Div Rms), 550033 (Littelfuse, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 3110-01-152-7121, 3110-01-154-4187, 3020-01-336-4034. Verify interchangeability with system specifications before substitution.
Key specifications for 7755616-18: Accommodated Fuse Length: 1.500 INCHES NOMINAL IN; Mounting Hole Quantity: 6; Overall Height: 0.908 INCHES MINIMUM AND 0.928 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE CONTACT. 22 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.