The Strainer Element,sediment, cataloged under National Stock Number 4730-01-133-9013, 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 Haywardindl. Products, Inc.. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-133-9013 |
| Primary Part Number | ST524-MKXX |
| Item Name | Strainer Element,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Length | 16.500 INCHES NOMINAL IN |
| First End Flange Thickness | 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| End Connection Type | FLANGE W/BAIL FIRST END |
| End Connection Type | PLAIN SECOND END |
| Perforation Quantity | 8.0 PER SQUARE INCH |
| Perforation Diameter | 0.250 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 |
|---|---|
| ST524-MKXX PRIMARY | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| ST050-0800F-11CA REV D PIECE31 | 5/9 Secondary reference Haywardindl. Products, Inc. |
| ST050-0800F-11CA | 5/9 Secondary reference Haywardindl. Products, Inc. |
NSN 4730-01-133-9013 is a Strainer Element,sediment, manufactured by Haywardindl. Products, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-133-9013 has 1 manufacturer part number on file: ST524-MKXX (Haywardindl. Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-196-9174. Verify interchangeability with system specifications before substitution.
Key specifications for ST524-MKXX: Length: 16.500 INCHES NOMINAL IN; First End Flange Thickness: 0.250 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; End Connection Type: FLANGE W/BAIL FIRST END; End Connection Type: PLAIN SECOND END. 6 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.