The Guide,spring,main Rotor, cataloged under National Stock Number 1615-00-181-4236, is classified within Federal Supply Class 1615 (Helicopter Rotor Blades, Drive Mechanisms and Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1615-00-181-4236 |
| Primary Part Number | 369A1406-3 |
| Item Name | Guide,spring,main Rotor |
| FSC / FSG | 1615 / 16 — Helicopter Rotor Blades, Drive Mechanisms and Components |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,MIL-S-6758 COMP 4130 COND N OR STEEL,CORROSION RESISTANT MIL-H-6867 COMP 17-4PH,PASSIVATED PER HP4-B,SHAPE,FLANGED SLEEVE,DIM.,0.850 IN. NOM LG,2.178 IN. MIN,2.179 IN. MAX FLANGE OD,0.130 IN. NOM FLANGE W,0.970 IN. MIN,1.000 IN. MAX FLANGE 1ST STEP OD,0.110 IN. NOM FLANGE 1ST STEP W,0.417 IN. MIN,0.427 IN. MAX ACROSS HEX FLATSON BODY,0.610 IN. OM BODY LG,0.255 IN. MIN,0.265 IN. MAX BODY ID,0.700 IN. NOM FLANGE COUNTERBORE DIA BY 0.150 IN. DEEP,1.940 IN. DISTANCE ACROSS FLATS ON FLANGE,RIGHT HOLES 0.390 IN. DIA ON FLANGE EQUALLY SPACED ON 1.500 IN. BOLT CIRCLE DIA,ONE GROOVE ON FLANGE RIGHT FACE 0.060 IN. W,0.030 IN. DEEP AND 1.426 IN. DIA IN |
| 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 |
|---|---|
| 369A1406-3 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 369A1406-3 | 3/9 Design control — primary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 1615-00-181-4236 is a Guide,spring,main Rotor, manufactured by The Boeing Company, classified under FSC 1615, Helicopter Rotor Blades, Drive Mechanisms and Components. Status: active.
NSN 1615-00-181-4236 has 1 manufacturer part number on file: 369A1406-3 (The Boeing Company).
Key specifications for 369A1406-3: General Characteristics Item Description: STEEL,MIL-S-6758 COMP 4130 COND N OR STEEL,CORROSION RESISTANT MIL-H-6867 COMP 17-4PH,PASSIVATED PER HP4-B,SHAPE,FLANGED SLEEVE,DIM.,0.850 IN. NOM LG,2.178 IN. MIN,2.179 IN. MAX FLANGE OD,0.130 IN. NOM FLANGE W,0.970 IN. MIN,1.000 IN. MAX FLANGE 1ST STEP OD,0.110 IN. NOM FLANGE 1ST STEP W,0.417 IN. MIN,0.427 IN. MAX ACROSS HEX FLATSON BODY,0.610 IN. OM BODY LG,0.255 IN. MIN,0.265 IN. MAX BODY ID,0.700 IN. NOM FLANGE COUNTERBORE DIA BY 0.150 IN. DEEP,1.940 IN. DISTANCE ACROSS FLATS ON FLANGE,RIGHT HOLES 0.390 IN. DIA ON FLANGE EQUALLY SPACED ON 1.500 IN. BOLT CIRCLE DIA,ONE GROOVE ON FLANGE RIGHT FACE 0.060 IN. W,0.030 IN. DEEP AND 1.426 IN. DIA 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.