The Hook,bobbin Case, cataloged under National Stock Number 3530-01-170-7357, is classified within Federal Supply Class 3530 (Industrial Sewing Machines and Mobile Textile Repair Shops) of the Service and Trade Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3530-01-170-7357 |
| Item Name | Hook,bobbin Case |
| FSC / FSG | 3530 / 35 — Industrial Sewing Machines and Mobile Textile Repair Shops |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 210533 | 5/9 Secondary reference Singer Co the |
| 224433 | 3/9 Design control — primary reference Singer Co the |
NSN 3530-01-170-7357 is a Hook,bobbin Case, classified under FSC 3530, Industrial Sewing Machines and Mobile Textile Repair Shops. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2835-01-232-7046. Verify interchangeability with system specifications before substitution.
Key specifications for 3530-01-170-7357: End Item Identification: SINGER MODELS 107W,143W AND 307G INDUSTRIAL SEWING MACHINES W. 0 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.