The Brake Drum, cataloged under National Stock Number 2530-01-003-5211, is classified within Federal Supply Class 2530 (Vehicular Brake, Steering, Axle, Wheel, and Track Components) of the Vehicular Equipment Components group. The manufacturer of record is Pdi Ground Support Systems, Inc.. Government technical data includes 15 specifications, 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 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 | 2530-01-003-5211 |
| Primary Part Number | 8263-3 |
| Item Name | Brake Drum |
| FSC / FSG | 2530 / 25 — Vehicular Brake, Steering, Axle, Wheel, and Track Components |
| Manufacturer | Pdi Ground Support Systems, Inc. |
| Status | ACTIVE |
| Mounting Hole Quantity | 5 |
| Adjustment Hole | NOT INCLUDED |
| Balancing Pad | NOT INCLUDED |
| Mounting Hole Spacing | EQUALLY SPACED ON 5.500 IN. BOLT CIRCLE IN |
| Braking Surface Width | 2.500 INCHES NOMINAL IN |
| Inspection Hole | NOT INCLUDED |
| Material Document and Classification | QQ-S-700,COMP 1025 FED SPEC SINGLE MATERIAL RESPONSE OVERALL /D/ DO NOT USE |
| Mounting Hole Diameter | 0.567 INCHES NOMINAL IN |
| Overall Outside Diameter | 9.375 INCHES NOMINAL IN |
| Braking Surface Location | INTERNAL |
| Oil Drain Hole | NOT INCLUDED |
| Center Hole Diameter | 4.002 INCHES NOMINAL IN |
| Braking Surface Diameter | 9.000 INCHES NOMINAL IN |
| Material | STEEL COMP 1035 OVERALL |
| Cooling Fin | NOT INCLUDED |
| 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 |
|---|---|
| 8263-3 PRIMARY | Pdi Ground Support Systems, Inc. (USA) |
| 328AS129-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 2530-01-003-5211 is a Brake Drum, manufactured by Pdi Ground Support Systems, Inc., classified under FSC 2530, Vehicular Brake, Steering, Axle, Wheel, and Track Components. Status: active.
NSN 2530-01-003-5211 has 2 manufacturer part numbers on file: 8263-3 (Pdi Ground Support Systems, Inc.), 328AS129-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-514-7199. Verify interchangeability with system specifications before substitution.
Key specifications for 8263-3: Mounting Hole Quantity: 5; Adjustment Hole: NOT INCLUDED; Balancing Pad: NOT INCLUDED; Mounting Hole Spacing: EQUALLY SPACED ON 5.500 IN. BOLT CIRCLE IN. 15 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.
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.