The Speed Diffuser,test, cataloged under National Stock Number 4920-01-159-9596, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4920-01-159-9596 |
| Primary Part Number | GS20543-1 |
| Item Name | Speed Diffuser,test |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Functional Description | MEASURES SPEED OF ROTATIVE ASSEMBLY BY POSITIONING A SENSOR ADJACENT TO THE CAP NUT AT FAN END OF SHAFT AND RECORDING PULSES ON A SPEED MONITOR |
| 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 |
|---|---|
| GS20543-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 4920-01-159-9596 is a Speed Diffuser,test, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-159-9596 has 1 manufacturer part number on file: GS20543-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for GS20543-1: Special Features: C/O MODIFIED FLIGHT HARDWARE DIFFUSER IN WHICH IS MOUNTED A SPEED SENSOR; Functional Description: MEASURES SPEED OF ROTATIVE ASSEMBLY BY POSITIONING A SENSOR ADJACENT TO THE CAP NUT AT FAN END OF SHAFT AND RECORDING PULSES ON A SPEED MONITOR; Part Name Assigned by Controlling Agency: SPEED DIFFUSER, TEST; End Item Identification: B-52G/H ACFT AGE. G. 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.