Cap Assembly, Valve4820-00-840-9018

NSN 4820-00-840-9018 · NIIN 008409018

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-00-840-9018 · 4820008409018 · NIIN 008409018 · 00-840-9018 · FSC 4820 Valves, Nonpowered · 6505-054 · 629901-2

Nearby stock numbers ← 4820-00-840-8954 · 4820-00-840-9138 →

4820-00-840-9018 — Valves, Nonpowered

Features

Cap Assembly,valve — FSC 4820
General Characteristics Item Description: CONSISTS OF 586-15-1 CLIP 1;586-14 CHAIN ASSEMBLY 1;50023-081-1020 RING 1;50001-113-0020 SEAL 1;531-16 SPRING 1;558-26 COLLAR 1;587-46-4 CAP 1;SCREW 1;BALL 6

Identification

NSN: 4820-00-840-9018
NIIN: 008409018
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Cap Assembly,valve, cataloged under National Stock Number 4820-00-840-9018, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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	4820-00-840-9018
Item Name	Cap Assembly,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
General Characteristics Item Description	CONSISTS OF 586-15-1 CLIP 1;586-14 CHAIN ASSEMBLY 1;50023-081-1020 RING 1;50001-113-0020 SEAL 1;531-16 SPRING 1;558-26 COLLAR 1;587-46-4 CAP 1;SCREW 1;BALL 6

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.

6685-00-859-3403650505-4 POSSIBLE MATCH

THERMOSTAT,PARTS KIT

Possible match (shared part number)Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)

Cross-Reference Index

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

Reference documents

Reference	Meaning
6505-054	3/2 Design control — primary reference U.S. Government activity
629901-2	C/1 Advisory reference — outside the item-of-supply concept Honeywell Limited Dba Honeywell Aerospace Toronto Div Aerospace-Toronto

Related Parts

6685-00-859-3403POSSIBLE MATCH

THERMOSTAT,PARTS KIT

650505-4

Frequently Asked Questions

What is NSN 4820-00-840-9018?

NSN 4820-00-840-9018 is a Cap Assembly,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-00-840-9018?

1 possible match (shared part number, not a government interchangeability claim): 6685-00-859-3403. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-00-840-9018?

Key specifications for 4820-00-840-9018: General Characteristics Item Description: CONSISTS OF 586-15-1 CLIP 1;586-14 CHAIN ASSEMBLY 1;50023-081-1020 RING 1;50001-113-0020 SEAL 1;531-16 SPRING 1;558-26 COLLAR 1;587-46-4 CAP 1;SCREW 1;BALL 6. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-00-840-9018 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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