The Piston,disk Brake, cataloged under National Stock Number 1630-00-998-7900, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1630-00-998-7900
Item Name
Piston,disk Brake
FSC / FSG
1630 / 16 — Aircraft Wheel and Brake Systems
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
2995-01-089-416474521POSSIBLE MATCH
LEVER,VALVE SWITCH
Possible match (shared part number)Woodward, Inc. Div Fuel Systems and Controls
5330-01-484-51517452-1POSSIBLE MATCH
GASKET
Possible match (shared part number)Luminescent Systems, Inc. Dba Lsi Div Lsi-Nh
6605-01-565-4897074833-0000-00POSSIBLE MATCH
INDICATOR,BEARING-HEADING
Possible match (shared part number)Northrop Grumman Systems Corporation
5130-01-734-170674521POSSIBLE MATCH
BIT,SCREWDRIVER
Possible match (shared part number)General Services Administration Federal Supply Service
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
74-521
5/9Secondary reference
U.S. Government activity
442-4
3/2Design control — primary reference
U.S. Government activity
Related Parts
2995-01-089-4164POSSIBLE MATCH
LEVER,VALVE SWITCH
74521
5330-01-484-5151POSSIBLE MATCH
GASKET
7452-1
6605-01-565-4897POSSIBLE MATCH
INDICATOR,BEARING-HEADING
074833-0000-00
5130-01-734-1706POSSIBLE MATCH
BIT,SCREWDRIVER
74521
Frequently Asked Questions
What is NSN 1630-00-998-7900?
NSN 1630-00-998-7900 is a Piston,disk Brake, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
What NSN replaces 1630-00-998-7900?
4 possible matches (shared part number, not a government interchangeability claim): 2995-01-089-4164, 5330-01-484-5151, 6605-01-565-4897. Verify interchangeability with system specifications before substitution.
What are the specifications of 1630-00-998-7900?
Key specifications for 1630-00-998-7900: End Item Identification: P-3A ACFT A. 0 specifications are documented in the U.S. Government catalog.
Is NSN 1630-00-998-7900 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.