PartsTable TECHNICAL DATA SHEET

NSN 4820-01-642-8355Government record, cited

Ring, Guide4820-01-642-8355

NSN 4820-01-642-8355 · NIIN 016428355 · Part number 177 285 0200

Nahi Llc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 0XA44

Government record, cited

NSN 4820-01-642-8355 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-642-8355. Manufacturer of record part number: 177 285 0200.

Also searched as 4820-01-642-8355 · 4820016428355 · NIIN 016428355 · 01-642-8355 · FSC 4820 Valves, Nonpowered · CAGE 0XA44 · 177 285 0200 · LIST 002260 ITEM 30 & 31

Nearby stock numbers ← 4820-01-642-8320 Valve, Safety Relief · 4820-01-642-8379 Valve, Regulating, Fluid Pressure →

4820-01-642-8355 — Valves, Nonpowered

Features

Ring,guide — FSC 4820
2 manufacturer part numbers on file
Manufacturer of record: Nahi Llc

Identification

NSN: 4820-01-642-8355
NIIN: 016428355
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: 177 285 0200
Manufacturer: Nahi Llc

General Description

The Ring,guide, cataloged under National Stock Number 4820-01-642-8355, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Nahi Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.

Catalog Facts

Item Name	Ring,guide
FSC / FSG	4820 — Valves, Nonpowered (FSG 48)
Manufacturers	Black Bruin Oy (CAGE A215G); Nahi Llc (CAGE 0XA44)

Technical Specifications

Parameter	Value
NSN	4820-01-642-8355
Primary Part Number	177 285 0200
Item Name	Ring,guide
FSC / FSG	4820 / 48 — Valves, Nonpowered
Manufacturer	Nahi Llc
Status	ACTIVE

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

Part Number	Manufacturer
177 285 0200	Black Bruin Oy (FIN)
177 285 0200 PRIMARY	Nahi Llc (USA)

Reference documents

Reference	Meaning
LIST 002260 ITEM 30 & 31	5/1 Secondary reference Nahi Llc

No interchangeability data on file.

Other items in FSC 4820 — Valves, Nonpowered

Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.

4820-00-000-0097

4820-00-000-0097 · Item name not on file

4820-00-001-0010

VALVE,ROTARY,SELECTOR

4820-00-001-0020

4820-00-001-0020 · Item name not on file

4820-00-001-0021

4820-00-001-0021 · Item name not on file

4820-00-001-0032

4820-00-001-0032 · Item name not on file

4820-00-001-0037

VALVE,SAFETY RELIEF

4820-00-001-0042

4820-00-001-0042 · Item name not on file

4820-00-001-1230

4820-00-001-1230 · Item name not on file

Frequently Asked Questions

What is NSN 4820-01-642-8355?

NSN 4820-01-642-8355 is a Ring,guide, manufactured by Nahi Llc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-642-8355?

NSN 4820-01-642-8355 has 2 manufacturer part numbers on file: 177 285 0200 (Black Bruin Oy), 177 285 0200 (Nahi Llc).

Is NSN 4820-01-642-8355 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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