The Stem,pilot Sequence Valve, cataloged under National Stock Number 1620-00-133-4986, is classified within Federal Supply Class 1620 (Aircraft Landing Gear Components) of the Aircraft Components and Accessories group. The manufacturer of record is Eagle Tool & Machine Co., Inc.. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1620-00-133-4986 |
| Primary Part Number | 4G13541-101A |
| Item Name | Stem,pilot Sequence Valve |
| FSC / FSG | 1620 / 16 — Aircraft Landing Gear Components |
| Manufacturer | Eagle Tool & Machine Co., Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,QQ-S-763 CLASS 440C COND A;0.960 IN. LG;0.560 IN. SHOULDER DIA;0.250 IN. GAGE DIA W/THREE FLATS EQUALLY SPACED ON CIRC OF O.248 IN. IN |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 4G13541-101A | Eagle Tool & Machine Co., Inc. (USA) |
| 4G13541-101A | Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) (USA) |
| 4G13541-101A | Special Projects Mfg Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 4G13451-101A | 5/9 Secondary reference International Precision, Inc |
| 4G13541-101A | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
| 4G13451-101A | 3/2 Design control — primary reference U.S. Government activity |
NSN 1620-00-133-4986 is a Stem,pilot Sequence Valve, manufactured by Eagle Tool & Machine Co., Inc., classified under FSC 1620, Aircraft Landing Gear Components. Status: active.
NSN 1620-00-133-4986 has 3 manufacturer part numbers on file: 4G13541-101A (Eagle Tool & Machine Co., Inc.), 4G13541-101A (Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St)), 4G13541-101A (Special Projects Mfg Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5365-00-220-3153. Verify interchangeability with system specifications before substitution.
Key specifications for 4G13541-101A: General Characteristics Item Description: CRES,QQ-S-763 CLASS 440C COND A;0.960 IN. LG;0.560 IN. SHOULDER DIA;0.250 IN. GAGE DIA W/THREE FLATS EQUALLY SPACED ON CIRC OF O.248 IN. IN; Criticality Code Justification: FEAT; Special Features: FIT,FORM,FUCTION. 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 1620-00-133-4986 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.