PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15359Seat,valve

Mid-America Aerotech, Llc · NSN 4820-00-594-6979 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-594-6979 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-594-6979. Primary manufacturer part number: 15359.
Features
  • Seat,valve — FSC 4820
  • Body Outside Diameter: 0.387 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
  • Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
  • Surface Treatment: PASSIVATE OVERALL
  • Material: STEEL CORROSION RESISTING OVERALL
  • Seating Surface Shape: FLAT
  • Flange Diameter: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.104 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
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 4820-00-594-6979, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mid-America Aerotech, Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-594-6979
Primary Part Number15359
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMid-America Aerotech, Llc
StatusACTIVE
Body Outside Diameter0.387 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
Hardness Rating25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
Surface TreatmentPASSIVATE OVERALL
MaterialSTEEL CORROSION RESISTING OVERALL
Seating Surface ShapeFLAT
Flange Diameter0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
Body Inside Diameter0.104 INCHES MINIMUM AND 0.252 INCHES MAXIMUM IN
Seal Accommodation TypeGROOVED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-00-100-057115359 INTERCHANGEABLE
Cup,tapered Roller Bearing
Roper Industries Inc Roper Pump Co Div
5945-00-812-723915359 INTERCHANGEABLE
Relay,electromagnetic
Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
5895-01-689-7172MGW-1100 INTERCHANGEABLE
Encoder-Decoder,communications E
Vitec Inc Div Vitec Incorporated
Cross-Reference Index
Part NumberManufacturer
15359 PRIMARY Mid-America Aerotech, Llc (USA)
15359 Moog Inc (USA)
15359 Moog Inc Div Moog Inc., Space and Defense - Salt Lake City (USA)
15359 E-Systems Inc Montek Div Fluid Controls Opns (USA)
Related Parts
3110-00-100-0571INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
15359
5945-00-812-7239INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
15359
5895-01-689-7172INTERCHANGEABLE
ENCODER-DECODER,COMMUNICATIONS E
MGW-1100

Frequently Asked Questions

What is NSN 4820-00-594-6979?

NSN 4820-00-594-6979 is a Seat,valve, manufactured by Mid-America Aerotech, Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-594-6979?

NSN 4820-00-594-6979 has 4 cross-referenced part numbers: 15359 (Mid-America Aerotech, Llc), 15359 (Moog Inc), 15359 (Moog Inc Div Moog Inc., Space and Defense - Salt Lake City), 15359 (E-Systems Inc Montek Div Fluid Controls Opns).

What NSN replaces 4820-00-594-6979?

There are 3 known substitutes for 4820-00-594-6979: 3110-00-100-0571, 5945-00-812-7239, 5895-01-689-7172. Verify interchangeability with system specifications before substitution.

What are the specifications of 15359?

Key specifications for 15359: Overall Height: 0.574 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN; Body Outside Diameter: 0.387 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Surface Treatment: PASSIVATE OVERALL. 10 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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