Lock, Valve Stem4820-01-442-1678

NSN 4820-01-442-1678 · NIIN 014421678

FSC 4820 — Valves, Nonpowered · FSG 48 — Valves

Government record, cited

Also searched as 4820-01-442-1678 · 4820014421678 · NIIN 014421678 · 01-442-1678 · FSC 4820 Valves, Nonpowered · 4384536 · 803-4384536-5XXX-81

Nearby stock numbers ← 4820-01-442-1674 Valve, Ball · 4820-01-442-1679 Seat, Valve →

4820-01-442-1678 — Valves, Nonpowered

Features

Lock,valve Stem — FSC 4820
Overall Diameter: 2.062 INCHES NOMINAL IN
General Characteristics Item Description: CONSISTS OF A CLEVIS, SET SCREW, ROUND HEAD SCREW; LOCKWASHER, PIN, FLAT SPRING, LATCH, NOTCHED DIAL. 1.000 IN. VALVE SIZE IN
Material: COPPER ALLOY

Identification

NSN: 4820-01-442-1678
NIIN: 014421678
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves

General Description

The Lock,valve Stem, cataloged under National Stock Number 4820-01-442-1678, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4820-01-442-1678
Item Name	Lock,valve Stem
FSC / FSG	4820 / 48 — Valves, Nonpowered
Status	ACTIVE
Overall Diameter	2.062 INCHES NOMINAL IN
General Characteristics Item Description	CONSISTS OF A CLEVIS, SET SCREW, ROUND HEAD SCREW; LOCKWASHER, PIN, FLAT SPRING, LATCH, NOTCHED DIAL. 1.000 IN. VALVE SIZE IN
Material	COPPER 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

Cross-Reference Index

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

Reference documents

Reference	Meaning
4384536	D/9 Drawing number reference only U.S. Government activity
803-4384536-5XXX-81	3/2 Design control — primary reference U.S. Government activity

Frequently Asked Questions

What is NSN 4820-01-442-1678?

NSN 4820-01-442-1678 is a Lock,valve Stem, classified under FSC 4820, Valves, Nonpowered. Status: active.

What are the specifications of 4820-01-442-1678?

Key specifications for 4820-01-442-1678: Overall Diameter: 2.062 INCHES NOMINAL IN; General Characteristics Item Description: CONSISTS OF A CLEVIS, SET SCREW, ROUND HEAD SCREW; LOCKWASHER, PIN, FLAT SPRING, LATCH, NOTCHED DIAL. 1.000 IN. VALVE SIZE IN; End Item Identification: 1740-01-253-8064;SHIP, OHIO CLASS SSN (TRIDENT); Material: COPPER ALLOY. 3 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-442-1678 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.

PartsTable Design LLC · partstable.com