PartsTable TECHNICAL DATA SHEET
NSN 6540-00-001-0101Government record, cited

Lens, Ophthalmic, Sphere6540-00-001-0101

NSN 6540-00-001-0101 · NIIN 000010101 · Part number P0.25 SPHERE
Dispensers Optical Service Corp · FSC 6540 — Ophthalmic Instruments, Equipment, and Supplies · FSG 65 — Medical, Dental, and Veterinary Equipment · CAGE 3N062
Government record, cited
NSN 6540-00-001-0101 — this item is cataloged by the U.S. Government under National Stock Number 6540-00-001-0101. Manufacturer of record part number: P0.25 SPHERE.
Also searched as  6540-00-001-0101 · 6540000010101 · NIIN 000010101 · 00-001-0101 · FSC 6540 Ophthalmic Instruments, Equipment, and Supplies · CAGE 3N062 · P0.25 SPHERE · LENS,P0.25,6BC,71MM DIA · P25
Nearby stock numbers  ·
Features
  • Lens,ophthalmic,sphere — FSC 6540
  • Base Curve Diopter: 7.00 PLUS NOMINAL
  • Supplementary Features: UNCUT
  • Style Designator: ROUND
  • Diameter: 71.0 MILLIMETERS MINIMUM MM
  • Cross-Sectional Shape Style: SPHERE
  • Sphere Curve Inside Diopter: 0.25 PLUS MAXIMUM
  • Cubic Measure: 1.100 CUBIC FEET
Identification
  • NSN: 6540-00-001-0101
  • NIIN: 000010101
  • FSC: 6540 — Ophthalmic Instruments, Equipment, and Supplies
  • FSG: 65 — Medical, Dental, and Veterinary Equipment
  • Primary part number: P0.25 SPHERE
  • Manufacturer: Dispensers Optical Service Corp
General Description

The Lens,ophthalmic,sphere, cataloged under National Stock Number 6540-00-001-0101, 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 Dispensers Optical Service Corp. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 12 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). 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 — Ophthalmic Instruments, Equipment, and Supplies
ManufacturerDispensers Optical Service Corp
StatusACTIVE
Base Curve Diopter7.00 PLUS NOMINAL
Supplementary FeaturesUNCUT
Style DesignatorROUND
Diameter71.0 MILLIMETERS MINIMUM MM
Cross-Sectional Shape StyleSPHERE
Sphere Curve Inside Diopter0.25 PLUS MAXIMUM
Cubic Measure1.100 CUBIC FEET
Light TransmissionUNTINTED
MaterialPLASTIC SINGLE VISION
Thickness1.6 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Unit of IssuePR
⇄ Related Items 12
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-00-007-941113219E4285-2 POSSIBLE MATCH
PLUG,QUICK DISCONNECT
Possible match (shared part number)Cecom Lr Center
5310-00-011-5548115548 POSSIBLE MATCH
WASHER,LOCK
Possible match (shared part number)General Motors Corp
5330-00-461-7409P2-5RP POSSIBLE MATCH
PACKING MATERIAL
Possible match (shared part number)Star Hydraulics Llc
5120-00-468-1029P25 POSSIBLE MATCH
REMOVER,BEARING
Possible match (shared part number)Circor Naval Solutions Llc Dba Warren Pumps
2940-00-554-771251121 POSSIBLE MATCH
FILTER ELEMENT,FLUID
Possible match (shared part number)Wix Corp
5999-00-679-8511P25 POSSIBLE MATCH
HEATER,THERMAL RELEASE
Possible match (shared part number)Rockwell Automation, Inc. Dba Rockwell Automation
4520-00-818-1998P-25 POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
Possible match (shared part number)Star Mfg Intl Toastwell
5985-00-834-3306 POSSIBLE MATCH
SUPPORT,WAVEGUIDE
Possible match (shared part number)
4930-00-994-4044P-25 POSSIBLE MATCH
PUMP,HYDRAULIC
Possible match (shared part number)Enerpac Tool Group Corp
6625-01-039-2702P23 POSSIBLE MATCH
GENERATOR,PULSE
Possible match (shared part number)L3harris Interstate Electronics Corporation
Cross-Reference Index
Part NumberManufacturer
P0.25 SPHERE PRIMARY Dispensers Optical Service Corp (USA)
P25 PRIMARY I F Optical Company Inc Dba Chicago Optical Co (USA)
Reference documents
ReferenceMeaning
LENS,P0.25,6BC,71MM DIA 5/9 Secondary reference
U.S. Government activity
Related Parts
4730-00-007-9411POSSIBLE MATCH
PLUG,QUICK DISCONNECT
13219E4285-2
5310-00-011-5548POSSIBLE MATCH
WASHER,LOCK
115548
5330-00-461-7409POSSIBLE MATCH
PACKING MATERIAL
P2-5RP
5120-00-468-1029POSSIBLE MATCH
REMOVER,BEARING
P25
2940-00-554-7712POSSIBLE MATCH
FILTER ELEMENT,FLUID
51121
5999-00-679-8511POSSIBLE MATCH
HEATER,THERMAL RELEASE
P25
4520-00-818-1998POSSIBLE MATCH
HEATING ELEMENT,ELECTRICAL,NONIM
P-25
5985-00-834-3306POSSIBLE MATCH
SUPPORT,WAVEGUIDE
4930-00-994-4044POSSIBLE MATCH
PUMP,HYDRAULIC
P-25
6625-01-039-2702POSSIBLE MATCH
GENERATOR,PULSE
P23
4730-01-068-1053POSSIBLE MATCH
PLUG CHASSIS
P25
6625-01-100-6734POSSIBLE MATCH
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, Ophthalmic Instruments, Equipment, and Supplies. Status: active.

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

NSN 6540-00-001-0101 has 2 manufacturer part numbers on file: P0.25 SPHERE (Dispensers Optical Service Corp), P25 (I F Optical Company Inc Dba Chicago Optical Co).

What NSN replaces 6540-00-001-0101?

12 possible matches (shared part number, not a government interchangeability claim): 4730-00-007-9411, 5310-00-011-5548, 5330-00-461-7409. Verify interchangeability with system specifications before substitution.

What are the specifications of P0.25 SPHERE?

Key specifications for P0.25 SPHERE: Base Curve Diopter: 7.00 PLUS NOMINAL; Supplementary Features: UNCUT; Style Designator: ROUND; Diameter: 71.0 MILLIMETERS MINIMUM MM. 10 specifications are documented in the U.S. Government catalog.

Is NSN 6540-00-001-0101 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.
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