PartsTable TECHNICAL DATA SHEET

NSN 4820-01-087-6556Government record, cited

Lever Stop, Valve4820-01-087-6556

NSN 4820-01-087-6556 · NIIN 010876556

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-087-6556 · 4820010876556 · NIIN 010876556 · 01-087-6556 · FSC 4820 Valves, Nonpowered · 2641-405-01 ITEM 56 · 2641-809-41 ITEM 19 · 2641-809-41

Nearby stock numbers ← 4820-01-087-6551 Seat, Valve · 4820-01-087-6557 Spool, Directional Control Valve →

4820-01-087-6556 — Valves, Nonpowered

Features

Lever Stop,valve — FSC 4820
General Characteristics Item Description: MATERIAL CRES PER FED SPEC QQ-S-763 CLASS 304 CONDITION B

Identification

NSN: 4820-01-087-6556
NIIN: 010876556
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Lever Stop,valve, cataloged under National Stock Number 4820-01-087-6556, 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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	4820-01-087-6556
Item Name	Lever Stop,valve
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
General Characteristics Item Description	MATERIAL CRES PER FED SPEC QQ-S-763 CLASS 304 CONDITION B

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 7

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

4820-01-105-00242641-809-41 ITEM 23 POSSIBLE MATCH

CAP,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-107-67872641-809-41PC1,2640-801X2PC1 POSSIBLE MATCH

PARTS KIT,BALL VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-113-78862641-809-41 PIECE 9,10,14,19 POSSIBLE MATCH

STOP ASSEMBLY,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-121-2887264180941-0046 POSSIBLE MATCH

STOP,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-174-12752641-809-41 ITEM 42 POSSIBLE MATCH

ADAPTER,WRENCH,VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-194-69232641-809-41 ITEM 21 POSSIBLE MATCH

STEM,FLUID VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

4820-01-197-89592641-809-41PC2X2640-801X02PC3 POSSIBLE MATCH

PARTS KIT,BALL VALVE

Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat

Cross-Reference Index

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

Reference documents

Reference	Meaning
2641-405-01 ITEM 56	3/2 Design control — primary reference U.S. Government activity
2641-809-41 ITEM 19	3/2 Design control — primary reference U.S. Government activity
2641-809-41	5/2 Secondary reference U.S. Government activity

Related Parts

4820-01-105-0024POSSIBLE MATCH

CAP,VALVE

2641-809-41 ITEM 23

4820-01-107-6787POSSIBLE MATCH

PARTS KIT,BALL VALVE

2641-809-41PC1,2640-801X2PC1

4820-01-113-7886POSSIBLE MATCH

STOP ASSEMBLY,VALVE

2641-809-41 PIECE 9,10,14,19

4820-01-121-2887POSSIBLE MATCH

STOP,VALVE

264180941-0046

4820-01-174-1275POSSIBLE MATCH

ADAPTER,WRENCH,VALVE

2641-809-41 ITEM 42

4820-01-194-6923POSSIBLE MATCH

STEM,FLUID VALVE

2641-809-41 ITEM 21

4820-01-197-8959POSSIBLE MATCH

PARTS KIT,BALL VALVE

2641-809-41PC2X2640-801X02PC3

Frequently Asked Questions

What is NSN 4820-01-087-6556?

NSN 4820-01-087-6556 is a Lever Stop,valve, classified under FSC 4820, Valves, Nonpowered. Status: active.

What NSN replaces 4820-01-087-6556?

7 possible matches (shared part number, not a government interchangeability claim): 4820-01-105-0024, 4820-01-107-6787, 4820-01-113-7886. Verify interchangeability with system specifications before substitution.

What are the specifications of 4820-01-087-6556?

Key specifications for 4820-01-087-6556: General Characteristics Item Description: MATERIAL CRES PER FED SPEC QQ-S-763 CLASS 304 CONDITION B. 1 specification is documented in the U.S. Government catalog.

Is NSN 4820-01-087-6556 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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