The Ring,piston, cataloged under National Stock Number 4310-00-852-9031, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Honeywell International Inc. Div Aerospace - Torrance. Government technical data includes 6 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-852-9031 |
| Primary Part Number | 403671 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Honeywell International Inc. Div Aerospace - Torrance |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0460 INCHES MINIMUM AND 0.0560 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 1.125 INCHES IN |
| Material | STEEL 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 |
|---|---|
| 403671 PRIMARY | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| 2M2562 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 114033 | 5/9 Secondary reference Echlin Inc |
| IPD2M2562 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
| 403671 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| 403671 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-00-852-9031 is a Ring,piston, manufactured by Honeywell International Inc. Div Aerospace - Torrance, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-852-9031 has 2 manufacturer part numbers on file: 403671 (Honeywell International Inc. Div Aerospace - Torrance), 2M2562 (Caterpillar Inc Div Caterpillar Defense).
1 possible match (shared part number, not a government interchangeability claim): 5826-00-904-7754. Verify interchangeability with system specifications before substitution.
Key specifications for 403671: Overall Width: 0.0930 INCHES MINIMUM AND 0.0935 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT; Radial Wall Thickness: 0.0460 INCHES MINIMUM AND 0.0560 INCHES MAXIMUM IN. 6 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.