NSN 6540-01-247-8221 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-247-8221. Manufacturer of record part number: 40320 25561.
Also searched as6540-01-247-8221 ·
6540012478221 ·
NIIN 012478221 ·
01-247-8221 ·
FSC 6540 Ophthalmic Instruments, Equipment, and Supplies · CAGE 5S434 · 40320 25561
General Characteristics Item Description: USED WITH SLIT LIGHT MDL SL-6E; UNIT QTY 1
1 manufacturer part number on file
Manufacturer of record: Duffens Optical Inc
Identification
NSN: 6540-01-247-8221
NIIN: 012478221
FSC: 6540 — Ophthalmic Instruments, Equipment, and Supplies
FSG: 65 — Medical, Dental, and Veterinary Equipment
Primary part number: 40320 25561
Manufacturer: Duffens Optical Inc
General Description
The Housing,lamp, cataloged under National Stock Number 6540-01-247-8221, 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 Duffens Optical Inc. Government technical data includes 1 specification, 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. Unit of issue: EA.
Technical Specifications
Parameter
Value
NSN
6540-01-247-8221
Primary Part Number
40320 25561
Item Name
Housing,lamp
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 6540-01-247-8221?
NSN 6540-01-247-8221 is a Housing,lamp, manufactured by Duffens Optical Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
What part numbers are listed for NSN 6540-01-247-8221?
NSN 6540-01-247-8221 has 1 manufacturer part number on file: 40320 25561 (Duffens Optical Inc).
What are the specifications of 40320 25561?
Key specifications for 40320 25561: General Characteristics Item Description: USED WITH SLIT LIGHT MDL SL-6E; UNIT QTY 1; Part Name Assigned by Controlling Agency: HOUSING LAMP U/W E.I. NSN 6540011823770 SLIT LIGHT MDL SL-6E; End Item Identification: 6540-01-182-3770. 1 specification is documented in the U.S. Government catalog.
Is NSN 6540-01-247-8221 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.