NSN 5330-01-278-9656 · NIIN 012789656 · Part number 20431-F PIECE 57
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa · FSC 5330 — Packing and Gasket Materials · FSG 53 — Hardware and Abrasives · CAGE 04537
Government record, cited
NSN 5330-01-278-9656 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-278-9656. Manufacturer of record part number: 20431-F PIECE 57.
Also searched as5330-01-278-9656 ·
5330012789656 ·
NIIN 012789656 ·
01-278-9656 ·
FSC 5330 Packing and Gasket Materials · CAGE 04537 · 20431-F PIECE 57
Manufacturer of record: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Identification
NSN: 5330-01-278-9656
NIIN: 012789656
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives
Primary part number: 20431-F PIECE 57
Manufacturer: Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
General Description
The Retainer,packing, cataloged under National Stock Number 5330-01-278-9656, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Retainer,packing
FSC / FSG
5330 — Packing and Gasket Materials (FSG 53)
Manufacturers
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (CAGE 04537)
Technical Specifications
Parameter
Value
NSN
5330-01-278-9656
Primary Part Number
20431-F PIECE 57
Item Name
Retainer,packing
FSC / FSG
5330 / 53 — Packing and Gasket Materials
Manufacturer
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa (USA)
No interchangeability data on file.
Other items in FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085
RETAINER
5330-00-000-0167
PARTS KIT,SEAL REPLACEMENT,MECHA
5330-00-000-5275
5330-00-000-5275 · Item name not on file
5330-00-001-1260
SEAL,NONMETALLIC SPECIAL SHAPED
5330-00-001-1833
SEAL,PLAIN ENCASED
5330-00-001-1844
GLAND,RESERVOIR,INDICATOR END
5330-00-001-1845
5330-00-001-1845 · Item name not on file
5330-00-001-1846
5330-00-001-1846 · Item name not on file
Frequently Asked Questions
What is NSN 5330-01-278-9656?
NSN 5330-01-278-9656 is a Retainer,packing, manufactured by Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa, classified under FSC 5330, Packing and Gasket Materials. Status: active.
What part numbers are listed for NSN 5330-01-278-9656?
NSN 5330-01-278-9656 has 1 manufacturer part number on file: 20431-F PIECE 57 (Atwood & Morrill Co., Inc. Dba Weir Valves and Controls Usa).
Is NSN 5330-01-278-9656 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.