The Retainer,diaphragm,valve, cataloged under National Stock Number 1660-01-055-3397, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 1660-01-055-3397 |
| Primary Part Number | 883603-3 |
| Item Name | Retainer,diaphragm,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| FSC Application Data | VALVE,PRESSURE REGULATOR SHUTOFF |
| General Characteristics Item Description | ALUMINUM ALLOY 2014-T6 QQ-A-225/4,HARD ANODIZE PER AIRESEARCH EMS 52401 TY I CL B,ALL SURFACES 250.0 MICROINCHES EXCEPT OUTER EDGE IS TO BE 125.0 MICROINCHES,1.860 IN. MAX 1.840 IN. MIN OD,1.760 IN. MAX 1.740 IN. MIN ID,0.170 IN. MAX 0.150 IN. MIN H,1 CTR HOLE 0.172 IN. MAX 0.166 IN. MIN DIA THRU IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 883603-3 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 883603-3 | 5/9 Secondary reference U.S. Government activity |
NSN 1660-01-055-3397 is a Retainer,diaphragm,valve, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-01-055-3397 has 1 manufacturer part number on file: 883603-3 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 883603-3: FSC Application Data: VALVE,PRESSURE REGULATOR SHUTOFF; General Characteristics Item Description: ALUMINUM ALLOY 2014-T6 QQ-A-225/4,HARD ANODIZE PER AIRESEARCH EMS 52401 TY I CL B,ALL SURFACES 250.0 MICROINCHES EXCEPT OUTER EDGE IS TO BE 125.0 MICROINCHES,1.860 IN. MAX 1.840 IN. MIN OD,1.760 IN. MAX 1.740 IN. MIN ID,0.170 IN. MAX 0.150 IN. MIN H,1 CTR HOLE 0.172 IN. MAX 0.166 IN. MIN DIA THRU IN; End Item Identification: ACFT F16A/B. 2 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.
NSN 1660-01-055-3397 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.