The Protractor,valve-Throttle, cataloged under National Stock Number 5220-01-173-2534, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. The manufacturer of record is The Boeing Company Div Legacy Am&m. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5220-01-173-2534 |
| Primary Part Number | 41B99000-001 |
| Item Name | Protractor,valve-Throttle |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| General Characteristics Item Description | MEASURES ANGLE THAT A THROTTLING VALVE OPENS TO ACTUATE AN ELECTRICALLY CONTROLLED SWITCH,ITEM IS MOUNTED TO THE SHAFT OF THE THROTTLE CONTROL VALVE,P/N 751502-1-1 |
| 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 |
|---|---|
| 41B99000-001 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
| Reference | Meaning |
|---|---|
| R-TBD-672 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
| GS20435-1 | 5/9 Secondary reference Hamilton Sundstrand Corporation Dba Collins Aerospace |
NSN 5220-01-173-2534 is a Protractor,valve-Throttle, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
NSN 5220-01-173-2534 has 1 manufacturer part number on file: 41B99000-001 (The Boeing Company Div Legacy Am&m).
Key specifications for 41B99000-001: General Characteristics Item Description: MEASURES ANGLE THAT A THROTTLING VALVE OPENS TO ACTUATE AN ELECTRICALLY CONTROLLED SWITCH,ITEM IS MOUNTED TO THE SHAFT OF THE THROTTLE CONTROL VALVE,P/N 751502-1-1; End Item Identification: B-1B. 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.