The Guard Sleeve with Lanyard, cataloged under National Stock Number 4920-00-424-6599, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Molded Devices, Inc. Dba Mdi Div Molded Devices. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4920-00-424-6599 |
| Primary Part Number | 721004BB |
| Item Name | Guard Sleeve with Lanyard |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Molded Devices, Inc. Dba Mdi Div Molded Devices |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CORROSION RESISTANT,WIRE ROPE,0.046 IN. NOM OD.PUNCH 0.125 IN. HOLE IN FIN,INSTALL SLEEVE-CRIMP IN |
| 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 |
|---|---|
| 721004BB PRIMARY | Molded Devices, Inc. Dba Mdi Div Molded Devices (USA) |
| Reference | Meaning |
|---|---|
| 721004 | 5/9 Secondary reference Molded Devices, Inc. Dba Mdi Div Molded Devices |
NSN 4920-00-424-6599 is a Guard Sleeve with Lanyard, manufactured by Molded Devices, Inc. Dba Mdi Div Molded Devices, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-00-424-6599 has 1 manufacturer part number on file: 721004BB (Molded Devices, Inc. Dba Mdi Div Molded Devices).
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-740-9636, 5315-01-086-7992. Verify interchangeability with system specifications before substitution.
Key specifications for 721004BB: General Characteristics Item Description: STEEL,CORROSION RESISTANT,WIRE ROPE,0.046 IN. NOM OD.PUNCH 0.125 IN. HOLE IN FIN,INSTALL SLEEVE-CRIMP IN. 1 specification is 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.