Retainer, Seat, Valve4820-01-052-8057

NSN 4820-01-052-8057 · NIIN 010528057

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-052-8057 · 4820010528057 · NIIN 010528057 · 01-052-8057 · FSC 4820 Valves, Nonpowered

Nearby stock numbers ← 4820-01-052-8056 Actuator · 4820-01-052-8543 Valve, Check →

4820-01-052-8057 — Valves, Nonpowered

Features

Retainer,seat,valve — FSC 4820
Outside Diameter: 1.125 INCHES NOMINAL IN
Material Document and Classification: QQ-A-250/11,ALLOY 6061-T6 FED SPEC SINGLE MATERIAL RESPONSE
Inside Diameter: 0.010 INCHES NOMINAL IN
Valve Design Control Activity: 86090
Material: ALUMINUM ALLOY

Identification

NSN: 4820-01-052-8057
NIIN: 010528057
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Retainer,seat,valve, cataloged under National Stock Number 4820-01-052-8057, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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	4820-01-052-8057
Item Name	Retainer,seat,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Outside Diameter	1.125 INCHES NOMINAL IN
Material Document and Classification	QQ-A-250/11,ALLOY 6061-T6 FED SPEC SINGLE MATERIAL RESPONSE
Inside Diameter	0.010 INCHES NOMINAL IN
Valve Design Control Activity	86090
Material	ALUMINUM ALLOY

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 1

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

2530-01-577-7205203159 POSSIBLE MATCH

LINK,BRAKE SHOE,ADJUSTMENT LEVER

Possible match (shared part number)Meritor Heavy Vehicle Systems, Llc

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
203159	3/2 Design control — primary reference U.S. Government activity

Related Parts

2530-01-577-7205POSSIBLE MATCH

LINK,BRAKE SHOE,ADJUSTMENT LEVER

203159

Frequently Asked Questions

What is NSN 4820-01-052-8057?

NSN 4820-01-052-8057 is a Retainer,seat,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-052-8057?

1 possible match (shared part number, not a government interchangeability claim): 2530-01-577-7205. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-052-8057?

Key specifications for 4820-01-052-8057: Outside Diameter: 1.125 INCHES NOMINAL IN; Material Document and Classification: QQ-A-250/11,ALLOY 6061-T6 FED SPEC SINGLE MATERIAL RESPONSE; Inside Diameter: 0.010 INCHES NOMINAL IN; Valve Design Control Activity: 86090. 5 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-052-8057 hazardous material?

No hazard code in the DLA record (HMIC N). 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.

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