The Reference Standard,physical Prop, cataloged under National Stock Number 6635-01-561-0156, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is United Western Technologies Corp.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 6635-01-561-0156 |
| Primary Part Number | 99120 |
| Item Name | Reference Standard,physical Prop |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | United Western Technologies Corp. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 99120 PRIMARY | United Western Technologies Corp. (USA) |
NSN 6635-01-561-0156 is a Reference Standard,physical Prop, manufactured by United Western Technologies Corp., classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-01-561-0156 has 1 manufacturer part number on file: 99120 (United Western Technologies Corp.).
2 possible matches (shared part number, not a government interchangeability claim): 4720-01-627-8859, 5915-01-666-6774. Verify interchangeability with system specifications before substitution.
Key specifications for 99120: Part Name Assigned by Controlling Agency: REFERENCE STANDARD, ENGINE SIDE; End Item Identification: F-22 AIRCRAFT ENGINE THRUST MOUNT KIT 6635-01-560-8721. 0 specifications are 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 6635-01-561-0156 has DEMIL Code D. 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.