PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21081-850-1Sleeve and Slide,directional Con

Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace · NSN 4820-01-436-0156 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-436-0156 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-436-0156. Primary manufacturer part number: 21081-850-1.
Features
  • Sleeve and Slide,directional Con — FSC 4820
  • Valve Model Number for Which Designed: 21078
  • Slide Material: STEEL
  • Valve Design Control Activity: 78062
  • Sleeve Material: STEEL
  • 4 verified cross-references
  • Primary manufacturer: Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Sleeve and Slide,directional Con, cataloged under National Stock Number 4820-01-436-0156, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-436-0156
Primary Part Number21081-850-1
Item NameSleeve and Slide,directional Con
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
StatusACTIVE
Valve Model Number for Which Designed21078
Slide MaterialSTEEL
Valve Design Control Activity78062
Sleeve MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-100-0632152C71 INTERCHANGEABLE
Cup,tapered Roller Bearing
Harbormaster Marine, Inc
5905-00-919-86132100-0059 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Keysight Technologies Inc
5999-00-990-4754SM-B-207040 INTERCHANGEABLE
Contact,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5998-01-131-465621078 INTERCHANGEABLE
Circuit Card Assembly
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5905-01-307-2852 INTERCHANGEABLE
Resistor,fixed,wire Wound
6625-01-414-378021078 INTERCHANGEABLE
Probe-Lead Assembly,test
Viavi Solutionsllc
4820-01-436-014821081-1001-1 INTERCHANGEABLE
Piston,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4810-01-436-289421081-1005-1 INTERCHANGEABLE
Piston,valve
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
5340-01-442-6176210-78 INTERCHANGEABLE
Handle,manual Control
Columbus Jack Corporation Div Columbus Jack
4820-01-469-154321078-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
Cross-Reference Index
Part NumberManufacturer
21078 FIND 3 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21081-850-1 PRIMARY Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21078 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
21078-3 Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace (USA)
Related Parts
3110-00-100-0632INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
152C71
5905-00-919-8613INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
2100-0059
5999-00-990-4754INTERCHANGEABLE
CONTACT,ELECTRICAL
SM-B-207040
5998-01-131-4656INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21078
5905-01-307-2852INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
6625-01-414-3780INTERCHANGEABLE
PROBE-LEAD ASSEMBLY,TEST
21078
4820-01-436-0148INTERCHANGEABLE
PISTON,VALVE
21081-1001-1
4810-01-436-2894INTERCHANGEABLE
PISTON,VALVE
21081-1005-1
5340-01-442-6176INTERCHANGEABLE
HANDLE,MANUAL CONTROL
210-78
4820-01-469-1543INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21078-001
2810-01-603-9594INTERCHANGEABLE
NRP,SPRING,AIRCRAFT
210783

Frequently Asked Questions

What is NSN 4820-01-436-0156?

NSN 4820-01-436-0156 is a Sleeve and Slide,directional Con, manufactured by Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-436-0156?

NSN 4820-01-436-0156 has 4 cross-referenced part numbers: 21078 FIND 3 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21081-850-1 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21078 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace), 21078-3 (Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace).

What NSN replaces 4820-01-436-0156?

There are 11 known substitutes for 4820-01-436-0156: 3110-00-100-0632, 5905-00-919-8613, 5999-00-990-4754 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21081-850-1?

Key specifications for 21081-850-1: Valve Model Number for Which Designed: 21078; Slide Material: STEEL; Valve Design Control Activity: 78062; Sleeve Material: STEEL. 5 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