The Flame Arrestor Assembly, cataloged under National Stock Number 6665-01-157-4919, is classified within Federal Supply Class 6665 (Hazard-detecting Instruments and Apparatus) of the Instruments and Laboratory Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6665-01-157-4919 |
| Item Name | Flame Arrestor Assembly |
| FSC / FSG | 6665 / 66 — Hazard-detecting Instruments and Apparatus |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF HEX REDUCING NIPPLE 1; FLAME ARRESTOR 1,0.312 IN. DIA,0.188 IN. THK IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 50-0091 | 5/9 Secondary reference Bacharach, Inc. |
| 50-0091 | 3/9 Design control — primary reference Wesco Distribution Inc 5105 |
NSN 6665-01-157-4919 is a Flame Arrestor Assembly, classified under FSC 6665, Hazard-detecting Instruments and Apparatus. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5962-01-302-9149, 5995-01-548-5194, 4220-01-590-8890. Verify interchangeability with system specifications before substitution.
Key specifications for 6665-01-157-4919: General Characteristics Item Description: CONSISTS OF HEX REDUCING NIPPLE 1; FLAME ARRESTOR 1,0.312 IN. DIA,0.188 IN. THK IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.