The Ring,piston, cataloged under National Stock Number 2805-01-160-3722, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Vertex Modernization and Sustainment Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-160-3722 |
| Primary Part Number | 3930AS1610-C27P |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Vertex Modernization and Sustainment Llc |
| Status | ACTIVE |
| FSC Application Data | LAUNCHER,GUIDED MISSILE,AIRCRAFT LAU-116/A |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.0880 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 1.000 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 |
|---|---|
| ST7M342C27P | The Boeing Company Div Defense (USA) |
| ST7M342-C27P | S & L Aerospace Metals Llc (USA) |
| 3930AS1610-C27P PRIMARY | Vertex Modernization and Sustainment Llc (USA) |
| DS8015C27P | Double Seal Ring Co (USA) |
| Reference | Meaning |
|---|---|
| J8-996P | 5/2 Secondary reference U.S. Government activity |
| FR84C27P | 5/2 Secondary reference U.S. Government activity |
| 3930AS1610 | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 10106404 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3930AS1610-C27P | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| ST7M342 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 2805-01-160-3722 is a Ring,piston, manufactured by Vertex Modernization and Sustainment Llc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-160-3722 has 4 manufacturer part numbers on file: ST7M342C27P (The Boeing Company Div Defense), ST7M342-C27P (S & L Aerospace Metals Llc), 3930AS1610-C27P (Vertex Modernization and Sustainment Llc), DS8015C27P (Double Seal Ring Co).
Key specifications for 3930AS1610-C27P: FSC Application Data: LAUNCHER,GUIDED MISSILE,AIRCRAFT LAU-116/A; Overall Width: 0.0590 INCHES MINIMUM AND 0.0600 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 7 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.