The Spacer,seal Ring, cataloged under National Stock Number 4320-01-198-0253, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4320-01-198-0253 |
| Item Name | Spacer,seal Ring |
| FSC / FSG | 4320 / 43 — Power and Hand Pumps |
| Status | ACTIVE |
| General Characteristics Item Description | MATERIAL,STEEL; 10.875 IN OD; 1.000 IN THK; ONE CENTERED THROUGH HOLE,3/8-16UNC-2B; ONE THROUGH HOLE,2.000 IN DIA,CENTER IS 2.500 IN OFF CENTER OF SPACER; CHROMIUM PLATING QQ-C-320,CL 2 IN |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 166A6163 PIECE 1 | 3/9 Design control — primary reference Ametek Advanced Industries, Inc. |
NSN 4320-01-198-0253 is a Spacer,seal Ring, classified under FSC 4320, Power and Hand Pumps. Status: active.
Key specifications for 4320-01-198-0253: General Characteristics Item Description: MATERIAL,STEEL; 10.875 IN OD; 1.000 IN THK; ONE CENTERED THROUGH HOLE,3/8-16UNC-2B; ONE THROUGH HOLE,2.000 IN DIA,CENTER IS 2.500 IN OFF CENTER OF SPACER; CHROMIUM PLATING QQ-C-320,CL 2 IN; Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS. 3 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 4320-01-198-0253 has DEMIL Code F. 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.