PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4863Stem,fluid Valve

Coffin Turbo Pump Inc · NSN 4820-01-275-4258 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-275-4258 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-275-4258. Primary manufacturer part number: 4863.
Features
  • Stem,fluid Valve — FSC 4820
  • Material: STEEL CORROSION RESISTING
  • 4 verified cross-references
  • Primary manufacturer: Coffin Turbo Pump Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Stem,fluid Valve, cataloged under National Stock Number 4820-01-275-4258, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Coffin Turbo Pump Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-275-4258
Primary Part Number4863
Item NameStem,fluid Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCoffin Turbo Pump Inc
StatusACTIVE
MaterialSTEEL CORROSION RESISTING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-375-89139972 INTERCHANGEABLE
Head and Liner
Coffin Turbo Pump Inc
5905-00-638-67761626893 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5935-00-803-23162630B0002 INTERCHANGEABLE
Connector,receptacle,electrical
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
6625-01-089-074779-374 INTERCHANGEABLE
Lead,test
Triplett (bluffton) Corporation Dba Lfe Instruments
2530-01-169-3754 INTERCHANGEABLE
Lining Assembly,brake Shoe
2910-01-275-06071520-376 INTERCHANGEABLE
Nozzle,turbine Pump
Coffin Turbo Pump Inc
4820-01-275-06174879 INTERCHANGEABLE
Piston,valve
Coffin Turbo Pump Inc
4320-01-275-06287137-2 INTERCHANGEABLE
Piston,pump
Coffin Turbo Pump Inc
4320-01-275-248119380-1 INTERCHANGEABLE
Sleeve,hub,impeller
Coffin Turbo Pump Inc
4320-01-275-24826690-9 INTERCHANGEABLE
Stator Assembly,pump,turbine
Coffin Turbo Pump Inc
Cross-Reference Index
Part NumberManufacturer
4863 Fmc Corp Turbo Pump Operation (USA)
E8256 ITEM 245 Coffin Turbo Pump Inc (USA)
E8256 Coffin Turbo Pump Inc (USA)
4863 PRIMARY Coffin Turbo Pump Inc (USA)
Related Parts
4320-00-375-8913INTERCHANGEABLE
HEAD AND LINER
9972
5905-00-638-6776INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
1626893
5935-00-803-2316INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2630B0002
6625-01-089-0747INTERCHANGEABLE
LEAD,TEST
79-374
2530-01-169-3754INTERCHANGEABLE
LINING ASSEMBLY,BRAKE SHOE
2910-01-275-0607INTERCHANGEABLE
NOZZLE,TURBINE PUMP
1520-376
4820-01-275-0617INTERCHANGEABLE
PISTON,VALVE
4879
4320-01-275-0628INTERCHANGEABLE
PISTON,PUMP
7137-2
4320-01-275-2481INTERCHANGEABLE
SLEEVE,HUB,IMPELLER
19380-1
4320-01-275-2482INTERCHANGEABLE
STATOR ASSEMBLY,PUMP,TURBINE
6690-9
4320-01-275-2483INTERCHANGEABLE
GUIDE,PISTON,PUMP
7138-2
5330-01-275-4198INTERCHANGEABLE
RING,WIPER
6609

Frequently Asked Questions

What is NSN 4820-01-275-4258?

NSN 4820-01-275-4258 is a Stem,fluid Valve, manufactured by Coffin Turbo Pump Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-275-4258?

NSN 4820-01-275-4258 has 4 cross-referenced part numbers: 4863 (Fmc Corp Turbo Pump Operation), E8256 ITEM 245 (Coffin Turbo Pump Inc), E8256 (Coffin Turbo Pump Inc), 4863 (Coffin Turbo Pump Inc).

What NSN replaces 4820-01-275-4258?

There are 12 known substitutes for 4820-01-275-4258: 4320-00-375-8913, 5905-00-638-6776, 5935-00-803-2316 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4863?

Key specifications for 4863: Material: STEEL CORROSION RESISTING. 1 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