The Retainer,special, cataloged under National Stock Number 1660-00-009-0416, 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 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 1660-00-009-0416 |
| Primary Part Number | 975946-2 |
| Item Name | Retainer,special |
| 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 |
| General Characteristics Item Description | CRES,PASSIVATED,1.390 IN. MIN,1.440 IN. MAX LG,0.500 IN. MIN,0.520 IN. MAX OD,0.380 IN. MIN,0.390 IN. MAX ID,0.300 IN. MIN,0.320 IN. MAX W IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 975946-2 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| 975946-2 | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 975946-2 | 5/9 Secondary reference U.S. Government activity |
| 10163012 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 1660-00-009-0416 is a Retainer,special, 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 1660-00-009-0416 has 2 manufacturer part numbers on file: 975946-2 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)), 975946-2 (Boeing Distribution Services X, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5325-00-116-4131, 5310-00-733-8645. Verify interchangeability with system specifications before substitution.
Key specifications for 975946-2: General Characteristics Item Description: CRES,PASSIVATED,1.390 IN. MIN,1.440 IN. MAX LG,0.500 IN. MIN,0.520 IN. MAX OD,0.380 IN. MIN,0.390 IN. MAX ID,0.300 IN. MIN,0.320 IN. MAX W 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.