The Ring,piston, cataloged under National Stock Number 4310-01-130-2209, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is American Turbo Systems Inc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-130-2209 |
| Primary Part Number | 100894-1 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | American Turbo Systems Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0280 INCHES MINIMUM AND 0.0285 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | GRAPHITE OVERALL |
| Standard Bore Diameter | 1.385 INCHES IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| 100894-1 | American Turbo Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 100894-1 | 3/2 Design control — primary reference U.S. Government activity |
| 100894-1 | 5/2 Secondary reference U.S. Government activity |
NSN 4310-01-130-2209 is a Ring,piston, manufactured by American Turbo Systems Inc, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-130-2209 has 1 manufacturer part number on file: 100894-1 (American Turbo Systems Inc).
2 possible matches (shared part number, not a government interchangeability claim): 4820-01-438-3500, 4310-01-521-6774. Verify interchangeability with system specifications before substitution.
Key specifications for 100894-1: Surface Treatment Document and Classification: MIL-L-8937 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Width: 0.1100 INCHES MINIMUM AND 0.1200 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 8 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.