The Siren,fluid Operated, cataloged under National Stock Number 6350-00-270-1045, is classified within Federal Supply Class 6350 (Miscellaneous Alarm, Signal, and Security Detection Systems) of the Alarm, Signal, and Security Detection Systems group. The manufacturer of record is Anderson Greenwood Lp Dba Anderson Greenwood Crosby. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6350-00-270-1045 |
| Primary Part Number | S12S3274-180 |
| Item Name | Siren,fluid Operated |
| FSC / FSG | 6350 / 63 — Miscellaneous Alarm, Signal, and Security Detection Systems |
| Manufacturer | Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| Status | ACTIVE |
| General Characteristics Item Description | STEAM OPERATED; OPERATING VALVE DATA,VALVE INTEGRAL W/SIREN BODY,INLET CONNECTION,FLANGE,STYLE NO. 1,SECTION B,REF DWG GROUP 43,1-1/2 IN. PIPE SIZE,FLANGED CONNECTION,4-5/8 IN. OD,13/16 IN. THK,3-1/2 IN. DIA BOLT CIRCLE,4 HOLES,5/8 IN. DIA HOLES; W/DRAIN VALVE,PIPE TAP CONNECTION,3/8 IN. SIZE OF CONNECTION; PRESSURE DATA,150 TO 300 PSI PRESSURE RANGE,450 PSI HYDROSTATIC TEST PRESSURE; PROJECTOR HORN DATA,90 DEG ANGLE HORN,8-3/8 IN. DIA OF HORN OPENING; BRONZE,FINISH A/A; MTG DATA,VERTICAL MTG W/HORN UP,FLANGE MOUNTED; OVER-ALL DIM.,22-3/16 IN. HIGH,10-1/2 IN. W; DATA REGARDING A TYPICAL MFR,STAR BRASS MFG CO,BOSTON,MASS,CODE NO. 57072,PART NO. AA-7056-A; FOR GENERAL PURPOSE USE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S12S3274-180 PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| AA7056B PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| AA7056A PRIMARY | Anderson Greenwood Lp Dba Anderson Greenwood Crosby (USA) |
| Reference | Meaning |
|---|---|
| AA-7056A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 6350-00-270-1045 is a Siren,fluid Operated, manufactured by Anderson Greenwood Lp Dba Anderson Greenwood Crosby, classified under FSC 6350, Miscellaneous Alarm, Signal, and Security Detection Systems. Status: active.
NSN 6350-00-270-1045 has 3 manufacturer part numbers on file: S12S3274-180 (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), AA7056B (Anderson Greenwood Lp Dba Anderson Greenwood Crosby), AA7056A (Anderson Greenwood Lp Dba Anderson Greenwood Crosby).
Key specifications for S12S3274-180: General Characteristics Item Description: STEAM OPERATED; OPERATING VALVE DATA,VALVE INTEGRAL W/SIREN BODY,INLET CONNECTION,FLANGE,STYLE NO. 1,SECTION B,REF DWG GROUP 43,1-1/2 IN. PIPE SIZE,FLANGED CONNECTION,4-5/8 IN. OD,13/16 IN. THK,3-1/2 IN. DIA BOLT CIRCLE,4 HOLES,5/8 IN. DIA HOLES; W/DRAIN VALVE,PIPE TAP CONNECTION,3/8 IN. SIZE OF CONNECTION; PRESSURE DATA,150 TO 300 PSI PRESSURE RANGE,450 PSI HYDROSTATIC TEST PRESSURE; PROJECTOR HORN DATA,90 DEG ANGLE HORN,8-3/8 IN. DIA OF HORN OPENING; BRONZE,FINISH A/A; MTG DATA,VERTICAL MTG W/HORN UP,FLANGE MOUNTED; OVER-ALL DIM.,22-3/16 IN. HIGH,10-1/2 IN. W; DATA REGARDING A TYPICAL MFR,STAR BRASS MFG CO,BOSTON,MASS,CODE NO. 57072,PART NO. AA-7056-A; FOR GENERAL PURPOSE USE IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.