The Ring,wearing, cataloged under National Stock Number 4320-01-207-9604, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Frederick Custom Machining Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-207-9604 |
| Primary Part Number | 29970-D PIECE 38 |
| Item Name | Ring,wearing |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Frederick Custom Machining Inc |
| Status | ACTIVE |
| Material Document and Classification | MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 38-JA | Frederick Custom Machining Inc (USA) |
| 29970-D PIECE 38 PRIMARY | Frederick Custom Machining Inc (USA) |
| Reference | Meaning |
|---|---|
| 29970-D | D/9 Drawing number reference only Frederick Custom Machining Inc |
NSN 4320-01-207-9604 is a Ring,wearing, manufactured by Frederick Custom Machining Inc, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-207-9604 has 2 manufacturer part numbers on file: 38-JA (Frederick Custom Machining Inc), 29970-D PIECE 38 (Frederick Custom Machining Inc).
Key specifications for 29970-D PIECE 38: Material Document and Classification: MIL-B-16541 MIL SPEC SINGLE MATERIAL RESPONSE; End Item Identification: FREDERICK IRON AND STEEL INC TYPE 9N-3500-15A4MHC NAVY PUMP; Material: COPPER ALLOY. 2 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.