The Seal Assembly,shaft,spring Loade, cataloged under National Stock Number 4320-01-221-4409, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-221-4409 |
| Primary Part Number | 299935-100 ITEM 2 L1 |
| Item Name | Seal Assembly,shaft,spring Loade |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUB SAFE ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 299935-100 ITEM 2 L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 299985-100 L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 299985-100 | 3/1 Design control — primary reference Oil States Industries, Inc. Div Special Products Div |
| 299935-100 ITEM 2 | 5/9 Secondary reference Edwards Aerospace Inc |
| 299985-100 | 5/9 Secondary reference Edwards Aerospace Inc |
| 299935-100 ITEM 2 | 5/1 Secondary reference Oil States Industries, Inc. Div Special Products Div |
NSN 4320-01-221-4409 is a Seal Assembly,shaft,spring Loade, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 4320, Power and Hand Pumps. Status: active.
NSN 4320-01-221-4409 has 2 manufacturer part numbers on file: 299935-100 ITEM 2 L1 (Naval Inventory Control Point Mechanicsburg), 299985-100 L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 299935-100 ITEM 2 L1: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUB SAFE ITEMS. 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.
NSN 4320-01-221-4409 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.