The Spacer,bearing, cataloged under National Stock Number 2840-00-992-6508, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2840-00-992-6508 |
| Item Name | Spacer,bearing |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,AMS4121,ANODIZED FINISH,AMS2470,ROCKWELL B SCALE 70 MIN HARDNESS,0.589 IN. MIN,0.594 IN. MAX O/A LG,1.8485 IN. MIN,1.8495 IN. MAX O/A OD,3 CIRCULAR GROOVES ON OUTER PERIPHERY,1.795 IN. MIN,1.800 IN. MAX DIA GROOVES,0.110 IN. NOM W 1ST GROOVE,0.090 IN. NOM DISTANCE FROM 1ST END TO GROOVE,0.089 IN. MIN,0.094 IN. MAX W 2ND GROOVE,0.250 IN. NOM DISTANCE FROM 1ST END TO 2ND GROOVE,0.110 IN. NOM W 3RD GROOVE,0.090 IN. NOM DISTANCE FROM 2ND END TO 3RD GROOVE,OD CHAMFERED 45 DEG BY 0.025 IN. NOM LG ON BOTH ENDS,1 HOLE 0.029 IN. MIN,0.034 IN. MAX DIA THROUGH WALL ON OUTER PERIPHERY AT 2ND GROOVE,1.710 IN. MIN,1.720 IN. MAX ID IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2-070-004-02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2840-00-992-6508 is a Spacer,bearing, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
Key specifications for 2840-00-992-6508: General Characteristics Item Description: ALUMINUM ALLOY,AMS4121,ANODIZED FINISH,AMS2470,ROCKWELL B SCALE 70 MIN HARDNESS,0.589 IN. MIN,0.594 IN. MAX O/A LG,1.8485 IN. MIN,1.8495 IN. MAX O/A OD,3 CIRCULAR GROOVES ON OUTER PERIPHERY,1.795 IN. MIN,1.800 IN. MAX DIA GROOVES,0.110 IN. NOM W 1ST GROOVE,0.090 IN. NOM DISTANCE FROM 1ST END TO GROOVE,0.089 IN. MIN,0.094 IN. MAX W 2ND GROOVE,0.250 IN. NOM DISTANCE FROM 1ST END TO 2ND GROOVE,0.110 IN. NOM W 3RD GROOVE,0.090 IN. NOM DISTANCE FROM 2ND END TO 3RD GROOVE,OD CHAMFERED 45 DEG BY 0.025 IN. NOM LG ON BOTH ENDS,1 HOLE 0.029 IN. MIN,0.034 IN. MAX DIA THROUGH WALL ON OUTER PERIPHERY AT 2ND GROOVE,1.710 IN. MIN,1.720 IN. MAX ID IN. 1 specification is 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.