The Borescope Kit, cataloged under National Stock Number 6650-01-565-4594, 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 Irwin International, Inc. Dba Irwin International Inc. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-565-4594 |
| Primary Part Number | 12-01655 |
| Item Name | Borescope Kit |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Irwin International, Inc. Dba Irwin International Inc |
| Status | ACTIVE |
| Component Quantity | 5 |
| Document Type | CATALOG SHEET |
| Relationship to Similar Equipment | 6650-01-555-6661 IS BORESCOPE AND CASE ONLY |
| Component Document Page Number | 1 |
| Document Identification | INTERNET PAGES |
| Reference Data and Literature | MANUFACTURER WEB PAGE |
| Portability Method | HINGED EXTERNAL HANDLES |
| Component Document Origin | INDUSTRIAL |
| Container Type | SUITCASE |
| Nonsupply Items and Quantities | 4X742 HFB2 BORESCOPE 1; 4X742 HFB-90-2 MIRROR TIP 1; 4X742 NOVA LIGHT 1; 4X742 HFC2 CARRY CASE 1; CLEANING KIT 1 |
| Document Source | 5M916 |
| 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 |
|---|---|
| HFB2-NVK | Gradient Lens Corporation Dba Gradient Lens Corp (USA) |
| 12-01655 PRIMARY | Irwin International, Inc. Dba Irwin International Inc (USA) |
| Reference | Meaning |
|---|---|
| 12-01655 | 3/9 Design control — primary reference Aircraft Spruce and Specialty Co a Div of Honeywell Inc |
NSN 6650-01-565-4594 is a Borescope Kit, manufactured by Irwin International, Inc. Dba Irwin International Inc, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-565-4594 has 2 manufacturer part numbers on file: HFB2-NVK (Gradient Lens Corporation Dba Gradient Lens Corp), 12-01655 (Irwin International, Inc. Dba Irwin International Inc).
Key specifications for 12-01655: Component Quantity: 5; Document Type: CATALOG SHEET; Relationship to Similar Equipment: 6650-01-555-6661 IS BORESCOPE AND CASE ONLY; Component Document Page Number: 1. 11 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 6650-01-565-4594 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.