The Ball,spring Relief, cataloged under National Stock Number 4820-01-189-0888, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Brand Hydraulics. 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. 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 | 4820-01-189-0888 |
| Primary Part Number | B5033 |
| Item Name | Ball,spring Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Brand Hydraulics |
| Status | ACTIVE |
| General Characteristics Item Description | 3/8 IN. DIA; USED ON HP-121 DA SERIES,DOUBLE ACTING,HAND OPERATED HYDRAULIC PUMP IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| B5033 PRIMARY | Brand Hydraulics (USA) |
NSN 4820-01-189-0888 is a Ball,spring Relief, manufactured by Brand Hydraulics, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-189-0888 has 1 manufacturer part number on file: B5033 (Brand Hydraulics).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-367-4727. Verify interchangeability with system specifications before substitution.
Key specifications for B5033: General Characteristics Item Description: 3/8 IN. DIA; USED ON HP-121 DA SERIES,DOUBLE ACTING,HAND OPERATED HYDRAULIC PUMP IN. 1 specification is 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.
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.