The Fluorescent Penetrant Inspection, cataloged under National Stock Number 6635-01-503-4777, is classified within Federal Supply Class 6635 (Physical Properties Testing and Inspection) of the Instruments and Laboratory Equipment group. The manufacturer of record is Gould & Bass Company, Inc.. Government technical data includes 7 specifications, 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 | 6635-01-503-4777 |
| Primary Part Number | PT72 |
| Item Name | Fluorescent Penetrant Inspection |
| FSC / FSG | 6635 / 66 — Physical Properties Testing and Inspection |
| Manufacturer | Gould & Bass Company, Inc. |
| Status | ACTIVE |
| Document Type | MILITARY SPECIFICATION |
| Document Identification | A-A-58050A A |
| Supplementary Features | CONSIST OF THE FOLLOWING SECTIONS:PENETRANT TANK,PENETRANT DRAIN,PRE-RINSE,REMOVER-RINSE,DEVELOPER DRAIN:DRYER,REAT & INSPECTION STATIONS |
| Reference Data and Literature | AA-58080 AND ENGINEERING DATA LIST FD2060-02-71964 |
| Component Document Origin | GOVERNMENT |
| Departure From Cited Document | BLACKLIGHT READABLE CLOCK: SLATTEED GRILL |
| Document Source | 81348 |
| 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 |
|---|---|
| PT72 PRIMARY | Gould & Bass Company, Inc. (USA) |
NSN 6635-01-503-4777 is a Fluorescent Penetrant Inspection, manufactured by Gould & Bass Company, Inc., classified under FSC 6635, Physical Properties Testing and Inspection. Status: active.
NSN 6635-01-503-4777 has 1 manufacturer part number on file: PT72 (Gould & Bass Company, Inc.).
Key specifications for PT72: Document Type: MILITARY SPECIFICATION; Document Identification: A-A-58050A A; Supplementary Features: CONSIST OF THE FOLLOWING SECTIONS:PENETRANT TANK,PENETRANT DRAIN,PRE-RINSE,REMOVER-RINSE,DEVELOPER DRAIN:DRYER,REAT & INSPECTION STATIONS; Reference Data and Literature: AA-58080 AND ENGINEERING DATA LIST FD2060-02-71964. 7 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.
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.