The Borescope, cataloged under National Stock Number 6650-00-646-7288, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Gyrus Acmi L.p. Dba Circon-Acmi Div. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6650-00-646-7288 |
| Primary Part Number | BK7540A |
| Item Name | Borescope |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Gyrus Acmi L.p. Dba Circon-Acmi Div |
| Status | ACTIVE |
| Supplementary Features | TECH ORDER= 32A2-3-1; INSTR WITH P/B--TURBINE FIRST-STAGE VANES AND THERMOCOUPLE VIEWING BORESCOPE; C130; ALC:SA |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BK7540A PRIMARY | Gyrus Acmi L.p. Dba Circon-Acmi Div (USA) |
| 6796572 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6650-5230-5038 | 6/9 Informative reference only U.S. Government activity |
| 6796572 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 6650-00-646-7288 is a Borescope, manufactured by Gyrus Acmi L.p. Dba Circon-Acmi Div, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-00-646-7288 has 2 manufacturer part numbers on file: BK7540A (Gyrus Acmi L.p. Dba Circon-Acmi Div), 6796572 (Rolls-Royce Corporation).
Key specifications for BK7540A: Supplementary Features: TECH ORDER= 32A2-3-1; INSTR WITH P/B--TURBINE FIRST-STAGE VANES AND THERMOCOUPLE VIEWING BORESCOPE; C130; ALC:SA; End Item Identification: T-56 TURBOPROP ENGINE; TO 2J-T56-24; NAVAIR 02B-5DA-504. 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.
NSN 6650-00-646-7288 has DEMIL Code Q. 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.