The Caliper Assembly,disc Brake, cataloged under National Stock Number 1630-01-474-0176, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. The manufacturer of record is Meggitt Aircraft Braking Systems Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1630-01-474-0176 |
| Primary Part Number | 4000615-1 |
| Item Name | Caliper Assembly,disc Brake |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Meggitt Aircraft Braking Systems Corporation |
| Status | ACTIVE |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4000615-1 PRIMARY | Meggitt Aircraft Braking Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1630PL0131836 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| K874294-003 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 1630-01-474-0176 is a Caliper Assembly,disc Brake, manufactured by Meggitt Aircraft Braking Systems Corporation, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
NSN 1630-01-474-0176 has 1 manufacturer part number on file: 4000615-1 (Meggitt Aircraft Braking Systems Corporation).
Key specifications for 4000615-1: Overall Height: 4.220 INCHES NOMINAL IN; Overall Length: 4.399 INCHES NOMINAL IN; Special Features: TWO BLEEDER PORTS PER MS33649-06; ONE INLET PORT PER MS33649-04; TWO MOUNTING HOLES 0.403 TO 0.413 IN. DIAMETER; HOUSING MATERIAL 2124-T851 ALUMINUM ALLOY PER QQ-A-250/29; CALIPER ACCOMODATES 12.000 IN. DIAMETER ROTOR WITH 0.351 IN. THICKNESS AT BRAKING AREA; LOCATED AT STA 132.460 IN; Part Name Assigned by Controlling Agency: CALIPER ASSEMBLY, ROTOR BRAKE. 1 specification is 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.
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.