The Inspection Penetrant, cataloged under National Stock Number 6850-01-437-4172, is classified within Federal Supply Class 6850 (Miscellaneous Chemical Specialties) of the Chemicals and Chemical Products group. The manufacturer of record is Sherwin Incorporated Dba Sherwin Inc Div Sherwin Inc.. Government technical data includes 3 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 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 | 6850-01-437-4172 |
| Primary Part Number | HM3A |
| Item Name | Inspection Penetrant |
| FSC / FSG | 6850 / 68 — Miscellaneous Chemical Specialties |
| Manufacturer | Sherwin Incorporated Dba Sherwin Inc Div Sherwin Inc. |
| Status | ACTIVE |
| Minimum Flash Point | 200.0 DEG FAHRENHEIT |
| Water Soluble Feature | NOT PROVIDED |
| Penetrant Type for Which Designed | FLUORESCENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC D) |
| Criticality Code | X |
NSN 6850-01-437-4172 is a Inspection Penetrant, manufactured by Sherwin Incorporated Dba Sherwin Inc Div Sherwin Inc., classified under FSC 6850, Miscellaneous Chemical Specialties. Status: active.
NSN 6850-01-437-4172 has 2 manufacturer part numbers on file: HM3A (Sherwin Incorporated Dba Sherwin Inc Div Sherwin Inc.), HM3A (Babb Co Sa).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-711-0896. Verify interchangeability with system specifications before substitution.
Key specifications for HM3A: Minimum Flash Point: 200.0 DEG FAHRENHEIT; Water Soluble Feature: NOT PROVIDED; Penetrant Type for Which Designed: FLUORESCENT. 3 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC D). 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.