NSN 6540-01-613-0581 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-613-0581. Manufacturer of record part number: V20D.
Also searched as6540-01-613-0581 ·
6540016130581 ·
NIIN 016130581 ·
01-613-0581 ·
FSC 6540 Ophthalmic Instruments, Equipment, and Supplies · CAGE 1FF35 · V20D · VOLK 20D · 298-0002050-S0
FSC: 6540 — Ophthalmic Instruments, Equipment, and Supplies
FSG: 65 — Medical, Dental, and Veterinary Equipment
Primary part number: V20D
Manufacturer: Volk Optical Inc
General Description
The Lens,condensing, cataloged under National Stock Number 6540-01-613-0581, is classified within Federal Supply Class 6540 (Ophthalmic Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. The manufacturer of record is Volk Optical Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
Technical Specifications
Parameter
Value
NSN
6540-01-613-0581
Primary Part Number
V20D
Item Name
Lens,condensing
FSC / FSG
6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies
Other items in FSC 6540 — Ophthalmic Instruments, Equipment, and Supplies
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6540-00-001-0100
6540-00-001-0100 · Item name not on file
6540-00-001-0101
LENS,OPHTHALMIC,SPHERE
6540-00-001-0101
LENS,OPHTHALMIC,SPHERE
6540-00-001-0102
6540-00-001-0102 · Item name not on file
6540-00-001-0103
6540-00-001-0103 · Item name not on file
6540-00-001-0104
6540-00-001-0104 · Item name not on file
6540-00-001-0105
6540-00-001-0105 · Item name not on file
6540-00-001-0106
6540-00-001-0106 · Item name not on file
Frequently Asked Questions
What is NSN 6540-01-613-0581?
NSN 6540-01-613-0581 is a Lens,condensing, manufactured by Volk Optical Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
What part numbers are listed for NSN 6540-01-613-0581?
NSN 6540-01-613-0581 has 2 manufacturer part numbers on file: VOLK 20D (Walman Optical Co Div Ultra Optics, X-Cel, Imagewear, Nouveau, Instruments), V20D (Volk Optical Inc).
What are the specifications of V20D?
Key specifications for V20D: Special Features: DOUBLE ASPHERIC GLASS OPTICS PROVIDE ENHANCED IMAGING; HIGH MAGNIFICATION FOR EXCELLENT VIEWS OF THE OPTIC DISC AND MACULA; PERFECTLY CORRECTED FOR FIELD CURVATURE, ASTIGMATISM,ABERRATIONS, AND COMA; FIELD OF VIEW: 46 DEG/60 DEG; IMAGE MAGNIFICATION: 3.13X; LASER SPOT: 0.32X; WORKING DISTANCE: 50 MM MM; Part Name Assigned by Controlling Agency: LENS VOLK 20D 50MM CLEAR INDIRECT OPHTHALMOSCOPY MM. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6540-01-613-0581 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.