The Guide,valve, cataloged under National Stock Number 1660-00-657-3612, 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 Div Aerospace-Tucson. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-657-3612 |
| Primary Part Number | 135995 |
| Item Name | Guide,valve |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| General Characteristics Item Description | CRES PER MIL-S-7720,COMP 303,COND A;1.155 IN. LG O/A;FIRST END 0.369 IN. DIA BY 0.280 IN. ID BY 0.485 IN. LG W/0.0925 IN. DIA HOLE THRU 0.095 IN.FROM END;SECOND END 0.370 IN. DIA BY 0.218 IN. ID BY 0.480 IN. LG W/45.0 DEG CHAMFER BY 0.050 IN. LG;0.190 IN. THKFLANGE BY 0.493 IN. DIA W/GROOVE 0.090 IN. WD BY 0.388 IN. DIA 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 |
NSN 1660-00-657-3612 is a Guide,valve, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-657-3612 has 2 manufacturer part numbers on file: 135995 (Honeywell International, Inc Div Aerospace-Tucson), 135995 (Honeywell International Inc. Div Aerospace - Torrance).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-009-9703. Verify interchangeability with system specifications before substitution.
Key specifications for 135995: General Characteristics Item Description: CRES PER MIL-S-7720,COMP 303,COND A;1.155 IN. LG O/A;FIRST END 0.369 IN. DIA BY 0.280 IN. ID BY 0.485 IN. LG W/0.0925 IN. DIA HOLE THRU 0.095 IN.FROM END;SECOND END 0.370 IN. DIA BY 0.218 IN. ID BY 0.480 IN. LG W/45.0 DEG CHAMFER BY 0.050 IN. LG;0.190 IN. THKFLANGE BY 0.493 IN. DIA W/GROOVE 0.090 IN. WD BY 0.388 IN. DIA IN; End Item Identification: 1660-00-588-9215;REGULATOR,AIR PRESSURE. 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 1660-00-657-3612 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.