The Retainer,piston, cataloged under National Stock Number 1630-01-080-8638, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1630-01-080-8638 |
| Item Name | Retainer,piston |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Status | ACTIVE |
| General Characteristics Item Description | MIL-S-6049 STEEL TIN PLATED;HEAT TREATED TO 180000 PSI MIN;1.545 IN. DIA;0.120 IN. THK;6 EQUALLY SPACED HOLES 0.150 IN. DIA ON 1.020 IN. BOLT CIRCLE;CENTER HOLE 0.320 IN. DIA COUNTERSUNK 90 DEG IN |
| Criticality Code Justification | FEAT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| 2606859 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
| 2606859 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1630-01-080-8638 is a Retainer,piston, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
Key specifications for 1630-01-080-8638: General Characteristics Item Description: MIL-S-6049 STEEL TIN PLATED;HEAT TREATED TO 180000 PSI MIN;1.545 IN. DIA;0.120 IN. THK;6 EQUALLY SPACED HOLES 0.150 IN. DIA ON 1.020 IN. BOLT CIRCLE;CENTER HOLE 0.320 IN. DIA COUNTERSUNK 90 DEG IN; Criticality Code Justification: FEAT; Special Features: FORM,FIT,FUNCTION. 2 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1630-01-080-8638 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.