The Stop,diaphragm, cataloged under National Stock Number 1660-00-429-2744, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-429-2744 |
| Primary Part Number | 548240 |
| Item Name | Stop,diaphragm |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| General Characteristics Item Description | ALUM ALLOY PER QQ-A-327-T6 OR AMS4027;ANODIZE PER MIL-A-8625,TY 1;6.260 IN. DIA BY 0.6735 IN. HGT BY 0.0335 IN. WALL THK;TWELVE 0.128 IN. DIA HOLES ON 5.800 IN. DIA BOLT CIRCLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 548240 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 1660-00-429-2744 is a Stop,diaphragm, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-429-2744 has 1 manufacturer part number on file: 548240 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-076-5947, 5910-01-198-6872. Verify interchangeability with system specifications before substitution.
Key specifications for 548240: General Characteristics Item Description: ALUM ALLOY PER QQ-A-327-T6 OR AMS4027;ANODIZE PER MIL-A-8625,TY 1;6.260 IN. DIA BY 0.6735 IN. HGT BY 0.0335 IN. WALL THK;TWELVE 0.128 IN. DIA HOLES ON 5.800 IN. DIA BOLT CIRCLE 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.
NSN 1660-00-429-2744 has DEMIL Code Q. 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.