The Lens,ophthalmic,sphere, cataloged under National Stock Number 6540-00-001-0166, is classified within Federal Supply Class 6540 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is I F Optical Company Inc Dba Chicago Optical Co. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: PR.
| Parameter | Value |
|---|---|
| NSN | 6540-00-001-0166 |
| Primary Part Number | M850 |
| Item Name | Lens,ophthalmic,sphere |
| FSC / FSG | 6540 / 65 — No Item Name Available |
| Manufacturer | I F Optical Company Inc Dba Chicago Optical Co |
| Status | ACTIVE |
| Thickness | 1.6 MILLIMETERS NOMINAL MM |
| Diameter | 71.0 MILLIMETERS MINIMUM MM |
| Cross-Sectional Shape Style | SPHERE |
| Departure From Cited Document | AS MODIFIED BY DIAMETER |
| Cubic Measure | 1.100 CUBIC FEET |
| Style Designator | ROUND |
| Material | PLASTIC SINGLE VISION |
| Supplementary Features | UNCUT |
| Sphere Curve Inside Diopter | 8.50 MINUS MAXIMUM |
| Nondefinitive Spec/std Data | 1 STYLE AND A CLASS |
| Base Curve Diopter | 3.00 PLUS NOMINAL |
| Light Transmission | UNTINTED |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Unit of Issue | PR |
| Part Number | Manufacturer |
|---|---|
| M850 PRIMARY | I F Optical Company Inc Dba Chicago Optical Co (USA) |
| LENS,M8.50SPH,0.50BC,71MM DIA | His Vision Inc (USA) |
NSN 6540-00-001-0166 is a Lens,ophthalmic,sphere, manufactured by I F Optical Company Inc Dba Chicago Optical Co, classified under FSC 6540 (No Item Name Available). Status: active.
NSN 6540-00-001-0166 has 2 cross-referenced part numbers: M850 (I F Optical Company Inc Dba Chicago Optical Co), LENS,M8.50SPH,0.50BC,71MM DIA (His Vision Inc).
There is 1 known substitute for 6540-00-001-0166: 3110-00-156-1879. Verify interchangeability with system specifications before substitution.
Key specifications for M850: Thickness: 1.6 MILLIMETERS NOMINAL MM; Diameter: 71.0 MILLIMETERS MINIMUM MM; Cross-Sectional Shape Style: SPHERE; Departure From Cited Document: AS MODIFIED BY DIAMETER. 13 total characteristics are documented in the Federal Logistics Information System.