PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet
MRO / Medical, Dental, and Veterinary Equipment / 6540-00-356-6050

4446XXPrism Bar,ophthalmic

Richmond Products Inc · NSN 6540-00-356-6050 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-00-356-6050 — this item is cataloged by the U.S. Government under National Stock Number 6540-00-356-6050. Primary manufacturer part number: 4446XX.
MRO FSG 65 NO ITEM NAME AVAILABLE Technical Drawing
6540-00-356-6050 — No Item Name Available illustration
Features
  • Prism Bar,ophthalmic — FSC 6540
  • Image Displacement Type: HORIZONTAL
  • Carrying Case: PROVIDED
  • Prism Diopter Power Rating: 6.0
  • Prism Diopter Power Rating: 8.0
  • Prism Diopter Power Rating: 4.0
  • Prism Diopter Power Rating: 18.0
  • Prism Diopter Power Rating: 10.0
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Prism Bar,ophthalmic, cataloged under National Stock Number 6540-00-356-6050, 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 Richmond Products Inc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-00-356-6050
Primary Part Number4446XX
Item NamePrism Bar,ophthalmic
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerRichmond Products Inc
StatusACTIVE
Image Displacement TypeHORIZONTAL
Carrying CasePROVIDED
Prism Diopter Power Rating6.0
Prism Diopter Power Rating8.0
Prism Diopter Power Rating4.0
Prism Diopter Power Rating18.0
Prism Diopter Power Rating10.0
Additional Prism Quantity1
Prism Diopter Power Rating20.0
Prism Diopter Power Rating30.0
Prism Diopter Power Rating16.0
Prism Diopter Power Rating2.0
Prism Diopter Power Rating14.0
Additional Prism Diopter Power Rating45.0
Prism Diopter Power Rating1.0
Prism Diopter Power Rating12.0
Prism Diopter Power Rating40.0
Prism Diopter Power Rating25.0
Design DesignationBERENS
Prism Diopter Power Rating35.0
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
⇄ Verified Substitutes 12
4730-00-137-78762071-4-4S INTERCHANGEABLE
Elbow,tube
Danfoss Power Solutions II, Llc
5975-00-497-1926 INTERCHANGEABLE
Ferrule,electrical Conduit
4720-00-595-1088 INTERCHANGEABLE
Hose,nonmetallic
5975-00-612-759411116 INTERCHANGEABLE
Box Assembly,juncti
Frontgrade Technologies Inc.
4730-00-993-6170SAE J514-2 16 080115QA INTERCHANGEABLE
Sleeve,compression,tube-Hose Fit
Sae International Dba Sae International
6685-01-176-2445411116G INTERCHANGEABLE
Gage,pressure,dial Indicating
Depottey Acquisition, Inc. Dba Econoline Abrasive Products
5340-01-188-803511116 INTERCHANGEABLE
Plunger,quick Release
Jergens Inc Div Tooling Components Division
3455-01-195-170311116 INTERCHANGEABLE
Trepanning Tool,machine
Hougen Manufacturing, Inc
4320-01-258-2719CA8815-30 INTERCHANGEABLE
Ring,wearing
Air & Liquid Systems Corporation Dba Buffalo Pumps
5120-01-397-3177 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
4446XX PRIMARY Richmond Products Inc (USA)
B-15 Gulden Ophthalmics Inc. (USA)
HV-16 Richmond Products Inc (USA)
11116 PRIMARY Gulden Ophthalmics Inc. (USA)
Related Parts
4730-00-137-7876INTERCHANGEABLE
ELBOW,TUBE
2071-4-4S
5975-00-497-1926INTERCHANGEABLE
FERRULE,ELECTRICAL CONDUIT
4720-00-595-1088INTERCHANGEABLE
HOSE,NONMETALLIC
5975-00-612-7594INTERCHANGEABLE
BOX ASSEMBLY,JUNCTI
11116
4730-00-993-6170INTERCHANGEABLE
SLEEVE,COMPRESSION,TUBE-HOSE FIT
SAE J514-2 16 080115QA
6685-01-176-2445INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
411116G
5340-01-188-8035INTERCHANGEABLE
PLUNGER,QUICK RELEASE
11116
3455-01-195-1703INTERCHANGEABLE
TREPANNING TOOL,MACHINE
11116
4320-01-258-2719INTERCHANGEABLE
RING,WEARING
CA8815-30
5120-01-397-3177INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5930-01-470-0465INTERCHANGEABLE
ADAPTER,SWITCH ACTUATOR
11116
5995-01-689-9072INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
11116

Frequently Asked Questions

What is NSN 6540-00-356-6050?

NSN 6540-00-356-6050 is a Prism Bar,ophthalmic, manufactured by Richmond Products Inc, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-00-356-6050?

NSN 6540-00-356-6050 has 4 cross-referenced part numbers: 4446XX (Richmond Products Inc), B-15 (Gulden Ophthalmics Inc.), HV-16 (Richmond Products Inc), 11116 (Gulden Ophthalmics Inc.).

What NSN replaces 6540-00-356-6050?

There are 12 known substitutes for 6540-00-356-6050: 4730-00-137-7876, 5975-00-497-1926, 4720-00-595-1088 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4446XX?

Key specifications for 4446XX: Image Displacement Type: HORIZONTAL; Carrying Case: PROVIDED; Prism Diopter Power Rating: 6.0; Prism Diopter Power Rating: 8.0. 22 total characteristics are documented in the Federal Logistics Information System.

6 Million Industrial Parts. Government-Verified Data. Free.
partstable.com/parts/6540-00-356-6050
✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
partstable.com · © 2026 PartsTable. Data for reference only.
Home · MRO Catalog · Medical, Dental, and Veterinary Equipment · TDS Rev 1.0 · 2026-07-22