The Retainer,impeller, cataloged under National Stock Number 4320-01-445-9421, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Insinger Machine Co. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-445-9421 |
| Primary Part Number | D-2631 |
| Item Name | Retainer,impeller |
| FSC / FSG | 4320 / 43 — No Item Name Available |
| Manufacturer | Insinger Machine Co |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| General Characteristics Item Description | 1.25IN. HEX HEAD; 0.375IN.-16 THREADS IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| SK-2882 | Insinger Machine Co (USA) |
| D-2631 PRIMARY | Insinger Machine Co (USA) |
| SK-2882 ITEM 12 | Insinger Machine Co (USA) |
NSN 4320-01-445-9421 is a Retainer,impeller, manufactured by Insinger Machine Co, classified under FSC 4320 (No Item Name Available). Status: active.
NSN 4320-01-445-9421 has 3 cross-referenced part numbers: SK-2882 (Insinger Machine Co), D-2631 (Insinger Machine Co), SK-2882 ITEM 12 (Insinger Machine Co).
There are 2 known substitutes for 4320-01-445-9421: 4320-01-445-9393, 4320-01-445-9398. Verify interchangeability with system specifications before substitution.
Key specifications for D-2631: Material: STEEL CORROSION RESISTING; General Characteristics Item Description: 1.25IN. HEX HEAD; 0.375IN.-16 THREADS IN; Special Features: FOR INSINGER MACHINE CO. PUMP NO. SK-2882, NSN 4320-01-445-9398; Part Name Assigned by Controlling Agency: IMPELLER RETAINING ASSY. 5 total characteristics are documented in the Federal Logistics Information System.