The Protractor,valve-Shut-Off, cataloged under National Stock Number 5220-01-170-9633, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5220-01-170-9633 |
| Primary Part Number | GS20445-1 |
| Item Name | Protractor,valve-Shut-Off |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | MEASURES ANGLE THAT SHUT-OFF VALVE OPENS TO ACTIVATE AN ELECTRICALLY CONTROLLED SWITCH OR THE ANGLE WHICH THEVALVE CLOSES TO DEACTIVATE THE SWITCH,MOUNTED TO THE SHAFT OF THE SHUT-OFF CONTROL VALVE,P/N 751503-1-2 |
| 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 |
|---|---|
| GS20445-1 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| R-TBD-673 | 5/9 Secondary reference The Boeing Company Div Legacy Am&m |
NSN 5220-01-170-9633 is a Protractor,valve-Shut-Off, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
NSN 5220-01-170-9633 has 1 manufacturer part number on file: GS20445-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for GS20445-1: General Characteristics Item Description: MEASURES ANGLE THAT SHUT-OFF VALVE OPENS TO ACTIVATE AN ELECTRICALLY CONTROLLED SWITCH OR THE ANGLE WHICH THEVALVE CLOSES TO DEACTIVATE THE SWITCH,MOUNTED TO THE SHAFT OF THE SHUT-OFF CONTROL VALVE,P/N 751503-1-2; 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.