NSN 4820-01-528-3285 · NIIN 015283285 · Part number LHD0304 NO.10 4IN
William E Williams Valve Corp · FSC 4820 — Valves, Nonpowered · FSG 48 — Valves · CAGE 79342
Government record, cited
NSN 4820-01-528-3285 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-528-3285. Manufacturer of record part number: LHD0304 NO.10 4IN.
Material Document and Classification: ASTM A276-316 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Material: STEEL COMP 316 OVERALL
1 manufacturer part number on file
Manufacturer of record: William E Williams Valve Corp
Identification
NSN: 4820-01-528-3285
NIIN: 015283285
FSC: 4820 — Valves, Nonpowered
FSG: 48 — Valves
Primary part number: LHD0304 NO.10 4IN
Manufacturer: William E Williams Valve Corp
General Description
The Seat,valve, cataloged under National Stock Number 4820-01-528-3285, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is William E Williams Valve Corp. 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4820-01-528-3285
Primary Part Number
LHD0304 NO.10 4IN
Item Name
Seat,valve
FSC / FSG
4820 / 48 — Valves, Nonpowered
Manufacturer
William E Williams Valve Corp
Status
ACTIVE
Material Document and Classification
ASTM A276-316 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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 4820-01-528-3285?
NSN 4820-01-528-3285 is a Seat,valve, manufactured by William E Williams Valve Corp, classified under FSC 4820, Valves, Nonpowered. Status: active.
What part numbers are listed for NSN 4820-01-528-3285?
NSN 4820-01-528-3285 has 1 manufacturer part number on file: LHD0304 NO.10 4IN (William E Williams Valve Corp).
What are the specifications of LHD0304 NO.10 4IN?
Key specifications for LHD0304 NO.10 4IN: Material Document and Classification: ASTM A276-316 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Special Features: THIS PIECE IS FLANGED AND IS LOCATED AROUND THE STEM WHERE IT GOES THROUGH THE BONNET; Part Name Assigned by Controlling Agency: BACK SEATRING; Material: STEEL COMP 316 OVERALL. 2 specifications are documented in the U.S. Government catalog.
Is NSN 4820-01-528-3285 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.