PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P0.25 SPHERELens,ophthalmic,sphere

Dispensers Optical Service Corp · NSN 6540-00-001-0101 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-00-001-0101 — this item is cataloged by the U.S. Government under National Stock Number 6540-00-001-0101. Primary manufacturer part number: P0.25 SPHERE.
Features
  • Lens,ophthalmic,sphere — FSC 6540
  • Diameter: 71.0 MILLIMETERS MINIMUM MM
  • Cross-Sectional Shape Style: SPHERE
  • Supplementary Features: UNCUT
  • Material: PLASTIC SINGLE VISION
  • Cubic Measure: 1.100 CUBIC FEET
  • Style Designator: ROUND
  • Sphere Curve Inside Diopter: 0.25 PLUS MAXIMUM
Applications
  • Applications requiring Plastic Single Vision construction
General Description

The Lens,ophthalmic,sphere, cataloged under National Stock Number 6540-00-001-0101, 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 Dispensers Optical Service Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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: PR.

Technical Specifications
ParameterValue
NSN6540-00-001-0101
Primary Part NumberP0.25 SPHERE
Item NameLens,ophthalmic,sphere
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerDispensers Optical Service Corp
StatusACTIVE
Diameter71.0 MILLIMETERS MINIMUM MM
Cross-Sectional Shape StyleSPHERE
Supplementary FeaturesUNCUT
MaterialPLASTIC SINGLE VISION
Cubic Measure1.100 CUBIC FEET
Style DesignatorROUND
Sphere Curve Inside Diopter0.25 PLUS MAXIMUM
Light TransmissionUNTINTED
Base Curve Diopter7.00 PLUS NOMINAL
Thickness1.6 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssuePR
Verified Substitutes 12
4730-00-007-941113219E4285-2 INTERCHANGEABLE
Plug,quick Disconnect
Cecom Lr Center
5310-00-011-5548115548 INTERCHANGEABLE
Washer,lock
General Motors Corp
5330-00-461-7409P2-5RP INTERCHANGEABLE
Packing Material
Star Hydraulics Llc
5120-00-468-1029P25 INTERCHANGEABLE
Remover,bearing
Circor Naval Solutions Llc Dba Warren Pumps
2940-00-554-771251121 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5999-00-679-8511P25 INTERCHANGEABLE
Heater,thermal Release
Rockwell Automation, Inc. Dba Rockwell Automation
4520-00-818-1998P-25 INTERCHANGEABLE
Heating Element,electrical,nonim
Star Mfg Intl Toastwell
5985-00-834-3306 INTERCHANGEABLE
Support,waveguide
4930-00-994-4044P-25 INTERCHANGEABLE
Pump,hydraulic
Enerpac Tool Group Corp
6625-01-039-2702P23 INTERCHANGEABLE
Generator,pulse
L3harris Interstate Electronics Corporation
Cross-Reference Index
Part NumberManufacturer
LENS,P0.25,6BC,71MM DIA His Vision Inc (USA)
P0.25 SPHERE PRIMARY Dispensers Optical Service Corp (USA)
P25 PRIMARY I F Optical Company Inc Dba Chicago Optical Co (USA)
Related Parts
4730-00-007-9411INTERCHANGEABLE
PLUG,QUICK DISCONNECT
13219E4285-2
5310-00-011-5548INTERCHANGEABLE
WASHER,LOCK
115548
5330-00-461-7409INTERCHANGEABLE
PACKING MATERIAL
P2-5RP
5120-00-468-1029INTERCHANGEABLE
REMOVER,BEARING
P25
2940-00-554-7712INTERCHANGEABLE
FILTER ELEMENT,FLUID
51121
5999-00-679-8511INTERCHANGEABLE
HEATER,THERMAL RELEASE
P25
4520-00-818-1998INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
P-25
5985-00-834-3306INTERCHANGEABLE
SUPPORT,WAVEGUIDE
4930-00-994-4044INTERCHANGEABLE
PUMP,HYDRAULIC
P-25
6625-01-039-2702INTERCHANGEABLE
GENERATOR,PULSE
P23
4730-01-068-1053INTERCHANGEABLE
PLUG CHASSIS
P25
6625-01-100-6734INTERCHANGEABLE
PENETRATOR
P25

Frequently Asked Questions

What is NSN 6540-00-001-0101?

NSN 6540-00-001-0101 is a Lens,ophthalmic,sphere, manufactured by Dispensers Optical Service Corp, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-00-001-0101?

NSN 6540-00-001-0101 has 3 cross-referenced part numbers: LENS,P0.25,6BC,71MM DIA (His Vision Inc), P0.25 SPHERE (Dispensers Optical Service Corp), P25 (I F Optical Company Inc Dba Chicago Optical Co).

What NSN replaces 6540-00-001-0101?

There are 12 known substitutes for 6540-00-001-0101: 4730-00-007-9411, 5310-00-011-5548, 5330-00-461-7409 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of P0.25 SPHERE?

Key specifications for P0.25 SPHERE: Diameter: 71.0 MILLIMETERS MINIMUM MM; Cross-Sectional Shape Style: SPHERE; Supplementary Features: UNCUT; Material: PLASTIC SINGLE VISION. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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