PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8976 ITEM 5Seat,valve

William E Williams Valve Corp · NSN 4820-01-352-3772 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-352-3772 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-352-3772. Primary manufacturer part number: 8976 ITEM 5.
Features
  • Seat,valve — FSC 4820
  • Material Document and Classification: ASTM A182,GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: STEEL CORROSION RESISTING OVERALL
  • 2 verified cross-references
  • Primary manufacturer: William E Williams Valve Corp
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-352-3772, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is William E Williams Valve Corp. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-352-3772
Primary Part Number8976 ITEM 5
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerWilliam E Williams Valve Corp
StatusACTIVE
Material Document and ClassificationASTM A182,GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialSTEEL CORROSION RESISTING OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
2915-00-024-57898976A INTERCHANGEABLE
Bellows Assembly,relief Valve
Triumph Engine Control Systems Llc
5360-00-076-95968976 INTERCHANGEABLE
Spring,helical,compression
Circor Aerospace, Inc. Div Circor
4320-00-394-275705008976P9 INTERCHANGEABLE
Sleeve,shaft,pump
Grundfos Cbs, Inc Dba Paco Pumps
6625-01-167-2974 INTERCHANGEABLE
Test Set,radar
4140-01-302-52098976 INTERCHANGEABLE
Impeller,fan,centrifugal
Hartzell Fan, Inc.
4820-01-352-01998976 ITEM 3 INTERCHANGEABLE
Disk,valve
William E Williams Valve Corp
6515-01-568-1275FE820K INTERCHANGEABLE
Clip,aneurysm
Aesculap, Inc
Cross-Reference Index
Part NumberManufacturer
8976 William E Williams Valve Corp (USA)
8976 ITEM 5 PRIMARY William E Williams Valve Corp (USA)
Related Parts
2915-00-024-5789INTERCHANGEABLE
BELLOWS ASSEMBLY,RELIEF VALVE
8976A
5360-00-076-9596INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8976
4320-00-394-2757INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
05008976P9
6625-01-167-2974INTERCHANGEABLE
TEST SET,RADAR
4140-01-302-5209INTERCHANGEABLE
IMPELLER,FAN,CENTRIFUGAL
8976
4820-01-352-0199INTERCHANGEABLE
DISK,VALVE
8976 ITEM 3
6515-01-568-1275INTERCHANGEABLE
CLIP,ANEURYSM
FE820K

Frequently Asked Questions

What is NSN 4820-01-352-3772?

NSN 4820-01-352-3772 is a Seat,valve, manufactured by William E Williams Valve Corp, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-352-3772?

NSN 4820-01-352-3772 has 2 cross-referenced part numbers: 8976 (William E Williams Valve Corp), 8976 ITEM 5 (William E Williams Valve Corp).

What NSN replaces 4820-01-352-3772?

There are 7 known substitutes for 4820-01-352-3772: 2915-00-024-5789, 5360-00-076-9596, 4320-00-394-2757 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8976 ITEM 5?

Key specifications for 8976 ITEM 5: Material Document and Classification: ASTM A182,GRADE F6 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL CORROSION RESISTING OVERALL; End Item Identification: WILLIAM E WILLIAMS VALVE CORP;ANGLE VALVE;FIG 153F-1. 3 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com