The Ring,piston, cataloged under National Stock Number 2815-00-392-4744, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-392-4744 |
| Primary Part Number | 77111B |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Cross-Sectional Shape Style | MULTI-PIECE STRAIGHT FACE, VENTILATED OIL CONTROL SPACER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1380 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.750 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 |
|---|---|
| 77111B PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 79114A | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 79114A | 5/9 Secondary reference Hercules Engine Co Inc |
| 77111B | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 2815-00-392-4744 is a Ring,piston, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-392-4744 has 2 manufacturer part numbers on file: 77111B (Brinkley Technology Group Llc Dba Hercules Manufacturing), 79114A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
Key specifications for 77111B: Overall Width: 0.1880 INCHES NOMINAL IN; Cross-Sectional Shape Style: MULTI-PIECE STRAIGHT FACE, VENTILATED OIL CONTROL SPACER; Joint Style: VERTICAL JOINT; Radial Wall Thickness: 0.1380 INCHES NOMINAL 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.