The Hardness,indicator, cataloged under National Stock Number 6850-01-309-1813, is classified within Federal Supply Class 6850 (Miscellaneous Chemical Specialties) of the Chemicals and Chemical Products group. The manufacturer of record is Thermo Fisher Scientific Pty Ltd Thermo Fisher Scientific Australia. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6850-01-309-1813 |
| Primary Part Number | 851-99 |
| Item Name | Hardness,indicator |
| FSC / FSG | 6850 / 68 — Miscellaneous Chemical Specialties |
| Manufacturer | Thermo Fisher Scientific Pty Ltd Thermo Fisher Scientific Australia |
| Status | ACTIVE |
| General Characteristics Item Description | RED CRYSTALLINE POWDER; 100 PILLOWS PER PACKAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 851-99 | Thermo Fisher Scientific Pty Ltd Thermo Fisher Scientific Australia (AUS) |
| Reference | Meaning |
|---|---|
| 851-99 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6850-01-309-1813 is a Hardness,indicator, manufactured by Thermo Fisher Scientific Pty Ltd Thermo Fisher Scientific Australia, classified under FSC 6850, Miscellaneous Chemical Specialties. Status: active.
NSN 6850-01-309-1813 has 1 manufacturer part number on file: 851-99 (Thermo Fisher Scientific Pty Ltd Thermo Fisher Scientific Australia).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-730-9103. Verify interchangeability with system specifications before substitution.
Key specifications for 851-99: General Characteristics Item Description: RED CRYSTALLINE POWDER; 100 PILLOWS PER PACKAGE. 1 specification is documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). Hazard information on this page is shown exactly as it appears in the DLA record.
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.