NSN 4820-01-426-6856 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-426-6856. Manufacturer of record part number: SS-6R3A-MM-E.
Also searched as4820-01-426-6856 ·
4820014266856 ·
NIIN 014266856 ·
01-426-6856 ·
FSC 4820 Valves, Nonpowered · CAGE 3T9T9 · SS-6R3A-MM-E
Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM PACKING
Valve Operation Method: MANUAL
1 manufacturer part number on file
Manufacturer of record: Swagelok Co
Identification
NSN: 4820-01-426-6856
NIIN: 014266856
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: SS-6R3A-MM-E
Manufacturer: Swagelok Co
General Description
The Valve,safety Relief, cataloged under National Stock Number 4820-01-426-6856, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Swagelok Co. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
Parameter
Value
NSN
4820-01-426-6856
Primary Part Number
SS-6R3A-MM-E
Item Name
Valve,safety Relief
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
Swagelok Co
Status
ACTIVE
Material
STEEL COMP 316 BODY
Material
STEEL FLOW CONTROL DEVICE
Material
RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM PACKING
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 4820-01-426-6856?
NSN 4820-01-426-6856 is a Valve,safety Relief, manufactured by Swagelok Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-426-6856?
NSN 4820-01-426-6856 has 1 manufacturer part number on file: SS-6R3A-MM-E (Swagelok Co).
What are the specifications of SS-6R3A-MM-E?
Key specifications for SS-6R3A-MM-E: Material: STEEL COMP 316 BODY; Material: STEEL FLOW CONTROL DEVICE; Material: RUBBER POLYMETHYLENE-PERFLUOROALKYLENE CLASS FKM PACKING; Valve Operation Method: MANUAL. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-426-6856 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.