PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4864Stem,pilot Valve

Coffin Turbo Pump Inc · NSN 4820-00-790-2700 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-790-2700 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-790-2700. Primary manufacturer part number: 4864.
Features
  • Stem,pilot Valve — FSC 4820
  • General Characteristics Item Description: STEEL; 4.064 IN.O/A LG; 0.875 IN.DIA 1ST END; 2ND END,0.625 IN.DIA,COUNTERBORED,0.500 IN.W,0.438 IN DEPTH; 0.438 IN.MIN,0.500 IN.MAX DIA SHAFT; GROOVE LOCATED IN CENTER OF SHAFT,0.125 IN.W,0.438 IN.DIA,SHOULDERS ON EA SIDE OF GROOVE,0.125 IN.W IN
  • 2 verified cross-references
  • Primary manufacturer: Coffin Turbo Pump Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Stem,pilot Valve, cataloged under National Stock Number 4820-00-790-2700, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-790-2700
Primary Part Number4864
Item NameStem,pilot Valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCoffin Turbo Pump Inc
StatusACTIVE
General Characteristics Item DescriptionSTEEL; 4.064 IN.O/A LG; 0.875 IN.DIA 1ST END; 2ND END,0.625 IN.DIA,COUNTERBORED,0.500 IN.W,0.438 IN DEPTH; 0.438 IN.MIN,0.500 IN.MAX DIA SHAFT; GROOVE LOCATED IN CENTER OF SHAFT,0.125 IN.W,0.438 IN.DIA,SHOULDERS ON EA SIDE OF GROOVE,0.125 IN.W IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5310-00-281-35324864 INTERCHANGEABLE
Nut,plain,hexagon
Unison Industries Llc
1680-00-481-41584864 INTERCHANGEABLE
Retainer,head Rest
B/e Aerospace Inc Dba Interturbine
5950-00-794-32189140-0039 INTERCHANGEABLE
Coil,radio Frequency
Keysight Technologies Inc
5935-00-803-23152630B0001 INTERCHANGEABLE
Connector,receptacle,electrical
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
6145-00-881-69784864 INTERCHANGEABLE
Cable,radio Frequency
Rscc Wire & Cable Llc Dba Marmon Industrial Energy & Infrastructure - East Granby
5905-00-986-426390J25K INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5805-01-260-67644864 INTERCHANGEABLE
Ringer,telephone
Hose-Mccann Telephone Co, Inc
4730-01-338-18849D0085-1 INTERCHANGEABLE
Clamp,hose
The Boeing Company
6515-01-438-91804945 INTERCHANGEABLE
Support,arch
Viscolas Inc
Cross-Reference Index
Part NumberManufacturer
4864 Fmc Corp (USA)
4864 PRIMARY Coffin Turbo Pump Inc (USA)
Related Parts
5310-00-281-3532INTERCHANGEABLE
NUT,PLAIN,HEXAGON
4864
1680-00-481-4158INTERCHANGEABLE
RETAINER,HEAD REST
4864
5950-00-794-3218INTERCHANGEABLE
COIL,RADIO FREQUENCY
9140-0039
5935-00-803-2315INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
2630B0001
6145-00-881-6978INTERCHANGEABLE
CABLE,RADIO FREQUENCY
4864
5905-00-986-4263INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
90J25K
5805-01-260-6764INTERCHANGEABLE
RINGER,TELEPHONE
4864
4730-01-338-1884INTERCHANGEABLE
CLAMP,HOSE
9D0085-1
6515-01-438-9180INTERCHANGEABLE
SUPPORT,ARCH
4945

Frequently Asked Questions

What is NSN 4820-00-790-2700?

NSN 4820-00-790-2700 is a Stem,pilot Valve, manufactured by Coffin Turbo Pump Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-790-2700?

NSN 4820-00-790-2700 has 2 cross-referenced part numbers: 4864 (Fmc Corp), 4864 (Coffin Turbo Pump Inc).

What NSN replaces 4820-00-790-2700?

There are 9 known substitutes for 4820-00-790-2700: 5310-00-281-3532, 1680-00-481-4158, 5950-00-794-3218 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4864?

Key specifications for 4864: General Characteristics Item Description: STEEL; 4.064 IN.O/A LG; 0.875 IN.DIA 1ST END; 2ND END,0.625 IN.DIA,COUNTERBORED,0.500 IN.W,0.438 IN DEPTH; 0.438 IN.MIN,0.500 IN.MAX DIA SHAFT; GROOVE LOCATED IN CENTER OF SHAFT,0.125 IN.W,0.438 IN.DIA,SHOULDERS ON EA SIDE OF GROOVE,0.125 IN.W IN. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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