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NSN 4820-01-119-4975Government record, cited

Seat, Valve4820-01-119-4975

NSN 4820-01-119-4975 · NIIN 011194975 · Part number SET-177
Atlas Copco Holyoke Inc · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 59379
Government record, cited
NSN 4820-01-119-4975 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-119-4975. Manufacturer of record part number: SET-177.
Also searched as  4820-01-119-4975 · 4820011194975 · NIIN 011194975 · 01-119-4975 · FSC 4820 Valves, Nonpowered · CAGE 59379 · SET-177
Nearby stock numbers  ·
Features
  • Seat,valve — FSC 4820
  • Material: STEEL OVERALL
  • Seating Surface Shape: FLAT
  • 1 manufacturer part number on file
  • Manufacturer of record: Atlas Copco Holyoke Inc
Identification
  • NSN: 4820-01-119-4975
  • NIIN: 011194975
  • FSC: 4820 — Valves, Nonpowered
  • FSG: 48 — Valves
  • Primary part number: SET-177
  • Manufacturer: Atlas Copco Holyoke Inc
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-119-4975, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Atlas Copco Holyoke Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications
ParameterValue
NSN4820-01-119-4975
Primary Part NumberSET-177
Item NameSeat,valve
FSC / FSG4820 / 48 — Valves, Nonpowered
ManufacturerAtlas Copco Holyoke Inc
StatusACTIVE
MaterialSTEEL OVERALL
Seating Surface ShapeFLAT
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
SET-177 PRIMARY Atlas Copco Holyoke Inc (USA)
Reference documents
ReferenceMeaning
SET-177 5/9 Secondary reference
U.S. Government activity
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 4820-01-119-4975?

NSN 4820-01-119-4975 is a Seat,valve, manufactured by Atlas Copco Holyoke Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.

What part numbers are listed for NSN 4820-01-119-4975?

NSN 4820-01-119-4975 has 1 manufacturer part number on file: SET-177 (Atlas Copco Holyoke Inc).

What are the specifications of SET-177?

Key specifications for SET-177: Overall Height: 0.393 INCHES NOMINAL IN; Material: STEEL OVERALL; Seating Surface Shape: FLAT. 2 specifications are documented in the U.S. Government catalog.

Is NSN 4820-01-119-4975 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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