PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6540NCM082658Insert,optical,chemical-Biologic

Defense Medical Standardization Board · NSN 6540-01-565-0585 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-565-0585 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-565-0585. Primary manufacturer part number: 6540NCM082658.
Features
  • Insert,optical,chemical-Biologic — FSC 6540
  • 3 verified cross-references
  • Primary manufacturer: Defense Medical Standardization Board
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insert,optical,chemical-Biologic, cataloged under National Stock Number 6540-01-565-0585, 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 Defense Medical Standardization Board. 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: EA.

Technical Specifications
ParameterValue
NSN6540-01-565-0585
Primary Part Number6540NCM082658
Item NameInsert,optical,chemical-Biologic
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerDefense Medical Standardization Board
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
2990-00-019-0459T-8571 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
2805-00-356-0983 INTERCHANGEABLE
Gage,oil Level Bayo
2805-00-561-55608571 INTERCHANGEABLE
Spring,helical,comp
Brinkley Technology Group Llc Dba Hercules Manufacturing
6130-00-934-16278571 INTERCHANGEABLE
Power Supply
Centroid, Inc. Dba Centroid Inc
5895-01-074-51108571 INTERCHANGEABLE
Detector,radio Frequency
Telonic Berkeley, Inc. Dba Telonic Berkeley
4820-01-127-40158571 INTERCHANGEABLE
Stem,fluid Valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5120-01-128-3804 INTERCHANGEABLE
Wrench,open End
6220-01-201-9970249-08571 INTERCHANGEABLE
Light,marker,clearance
Rogers Brothers Corp
6670-01-310-3516 INTERCHANGEABLE
Scale,weighing
7310-01-371-01418571 INTERCHANGEABLE
Coffee Maker,automatic
Bloomfield Industries
Cross-Reference Index
Part NumberManufacturer
6540NCM082658 Defense Medical Standardization Board (USA)
8571 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
10093967 Mine Safety Appliances Company, Llc Dba M S a (USA)
Related Parts
2990-00-019-0459INTERCHANGEABLE
MUFFLER,EXHAUST
T-8571
2805-00-356-0983INTERCHANGEABLE
GAGE,OIL LEVEL BAYO
2805-00-561-5560INTERCHANGEABLE
SPRING,HELICAL,COMP
8571
6130-00-934-1627INTERCHANGEABLE
POWER SUPPLY
8571
5895-01-074-5110INTERCHANGEABLE
DETECTOR,RADIO FREQUENCY
8571
4820-01-127-4015INTERCHANGEABLE
STEM,FLUID VALVE
8571
5120-01-128-3804INTERCHANGEABLE
WRENCH,OPEN END
6220-01-201-9970INTERCHANGEABLE
LIGHT,MARKER,CLEARANCE
249-08571
6670-01-310-3516INTERCHANGEABLE
SCALE,WEIGHING
7310-01-371-0141INTERCHANGEABLE
COFFEE MAKER,AUTOMATIC
8571
5325-01-390-8411INTERCHANGEABLE
RING,RETAINING
857-1
6515-01-573-2291INTERCHANGEABLE
GUIDEWIRE,FIXATION IMPLANT
8571

Frequently Asked Questions

What is NSN 6540-01-565-0585?

NSN 6540-01-565-0585 is a Insert,optical,chemical-Biologic, manufactured by Defense Medical Standardization Board, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-565-0585?

NSN 6540-01-565-0585 has 3 cross-referenced part numbers: 6540NCM082658 (Defense Medical Standardization Board), 8571 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), 10093967 (Mine Safety Appliances Company, Llc Dba M S a).

What NSN replaces 6540-01-565-0585?

There are 12 known substitutes for 6540-01-565-0585: 2990-00-019-0459, 2805-00-356-0983, 2805-00-561-5560 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6540NCM082658?

Key specifications for 6540NCM082658: Special Features: STRAPLESS SPECTACLE INSERT ENABLING VISION CORRECTION WHEN WEARING PROTECTIVE GAS MASK; WIRE FRAME FOLLOWS PERIPHERY OF GAS MASK VISOR, SUSPENDS SPECTACLE FRAME FROM ABOVE; INCLUDES: FRAME ASSEMBLY P/N 493583, SUPPORT ASSEMBLY P/N 10093970, GUIDE P/N 454816, LABEL AND INSTRUCTIONS P/N 10094791; FOR USE W/ MCU-2P GAS MASK AS WELL AS MSAS MILLENIUM GAS MASK P/N 10051286 (SMALL); Part Name Assigned by Controlling Agency: SPECTACLE KIT CAGE TYPE SMALL. 2 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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