The Expander,lock Screw, cataloged under National Stock Number 4920-01-088-4593, 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 Rhinestahl Corporation Dba Rhinestahl. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-088-4593 |
| Primary Part Number | 21C8181G01 |
| Item Name | Expander,lock Screw |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Rhinestahl Corporation Dba Rhinestahl |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF A STEEL DIAMOND-SHAPED OVALIZING BIT AND A HANDLE W/ DETACHABLE DROP HAMMER ASSEMBLY,2.500 IN. DIA,24.000 IN. LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21C8181G01 PRIMARY | Rhinestahl Corporation Dba Rhinestahl (USA) |
| AT4096476-932 | Boeing Aerostructures Australiapty Ltd (AUS) |
| Reference | Meaning |
|---|---|
| 21C8181G01 | 3/9 Design control — primary reference General Electric Company |
NSN 4920-01-088-4593 is a Expander,lock Screw, manufactured by Rhinestahl Corporation Dba Rhinestahl, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-088-4593 has 2 manufacturer part numbers on file: 21C8181G01 (Rhinestahl Corporation Dba Rhinestahl), AT4096476-932 (Boeing Aerostructures Australiapty Ltd).
Key specifications for 21C8181G01: General Characteristics Item Description: CONSISTS OF A STEEL DIAMOND-SHAPED OVALIZING BIT AND A HANDLE W/ DETACHABLE DROP HAMMER ASSEMBLY,2.500 IN. DIA,24.000 IN. LG IN; End Item Identification: ACFT ENGINE F404-GE-400. 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.
NSN 4920-01-088-4593 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.