The Strainer Element,sediment, cataloged under National Stock Number 4730-01-196-1388, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Armstrong International Inc Dba Armstrong Machine Works. Government technical data includes 7 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-196-1388 |
| Primary Part Number | B1SW2-1/2SCREEN ONLY |
| Item Name | Strainer Element,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Armstrong International Inc Dba Armstrong Machine Works |
| Status | ACTIVE |
| Filtering Media Design | PERFORATED |
| Length | 5.438 INCHES NOMINAL IN |
| Perforation Quantity | 225.0 PER SQUARE INCH |
| Style Designator | CYLINDRICAL |
| Element Outside Diameter | 3.188 INCHES NOMINAL IN |
| Material | STEEL COMP 304 |
| Perforation Diameter | 0.045 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B1SW2-1/2SCREEN ONLY PRIMARY | Armstrong International Inc Dba Armstrong Machine Works (USA) |
| Reference | Meaning |
|---|---|
| B1SW2-1/2INBSKT | 5/9 Secondary reference Armstrong International Inc Dba Armstrong Machine Works |
NSN 4730-01-196-1388 is a Strainer Element,sediment, manufactured by Armstrong International Inc Dba Armstrong Machine Works, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-196-1388 has 1 manufacturer part number on file: B1SW2-1/2SCREEN ONLY (Armstrong International Inc Dba Armstrong Machine Works).
Key specifications for B1SW2-1/2SCREEN ONLY: Filtering Media Design: PERFORATED; Length: 5.438 INCHES NOMINAL IN; Perforation Quantity: 225.0 PER SQUARE INCH; Style Designator: CYLINDRICAL. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.