PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

28807Seat,valve

Mid-America Aerotech, Llc · NSN 4810-00-199-8720 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-199-8720 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-199-8720. Primary manufacturer part number: 28807.
Features
  • Seat,valve — FSC 4810
  • Body Inside Diameter: 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
  • Body Outside Diameter: 0.499 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
  • Seat Radius: 0.010 INCHES NOMINAL IN
  • Surface Treatment: PASSIVATE OVERALL
  • Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
  • Material Document and Classification: QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Flange Diameter: 0.610 INCHES MINIMUM AND 0.611 INCHES MAXIMUM IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Comp 440c Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4810-00-199-8720, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mid-America Aerotech, Llc. Government technical data includes 12 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
NSN4810-00-199-8720
Primary Part Number28807
Item NameSeat,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerMid-America Aerotech, Llc
StatusACTIVE
Body Inside Diameter0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN
Body Outside Diameter0.499 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
Seat Radius0.010 INCHES NOMINAL IN
Surface TreatmentPASSIVATE OVERALL
Hardness Rating36.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
Material Document and ClassificationQQ-S-763 FED SPEC ALL MATERIAL RESPONSES OVERALL
Flange Diameter0.610 INCHES MINIMUM AND 0.611 INCHES MAXIMUM IN
Under Flange Height0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN
Style DesignatorPLAIN FLANGED
MaterialSTEEL COMP 440C OVERALL
Flange Seat to Disk End Height0.060 INCHES NOMINAL IN
Seating Surface ShapeRADIAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-255-034328807 INTERCHANGEABLE
Gasket
Dressta North America Ltd
5930-00-708-862628807 INTERCHANGEABLE
Switch,thermostatic
Princo Instruments, Inc
5360-01-422-070037366 INTERCHANGEABLE
Spring,helical,compression
Alliance Laundry Systems Llc
Cross-Reference Index
Part NumberManufacturer
28807 Mid-America Aerotech, Llc (USA)
28807 Moog Inc (USA)
28807 E-Systems Inc Montek Div Fluid Controls Opns (USA)
28807 Moog Inc Div Moog Inc., Space and Defense - Salt Lake City (USA)
Related Parts
5330-00-255-0343INTERCHANGEABLE
GASKET
28807
5930-00-708-8626INTERCHANGEABLE
SWITCH,THERMOSTATIC
28807
5360-01-422-0700INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
37366

Frequently Asked Questions

What is NSN 4810-00-199-8720?

NSN 4810-00-199-8720 is a Seat,valve, manufactured by Mid-America Aerotech, Llc, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-00-199-8720?

NSN 4810-00-199-8720 has 4 cross-referenced part numbers: 28807 (Mid-America Aerotech, Llc), 28807 (Moog Inc), 28807 (E-Systems Inc Montek Div Fluid Controls Opns), 28807 (Moog Inc Div Moog Inc., Space and Defense - Salt Lake City).

What NSN replaces 4810-00-199-8720?

There are 3 known substitutes for 4810-00-199-8720: 5330-00-255-0343, 5930-00-708-8626, 5360-01-422-0700. Verify interchangeability with system specifications before substitution.

What are the specifications of 28807?

Key specifications for 28807: Body Inside Diameter: 0.315 INCHES MINIMUM AND 0.325 INCHES MAXIMUM IN; Body Outside Diameter: 0.499 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN; Seat Radius: 0.010 INCHES NOMINAL IN; Surface Treatment: PASSIVATE OVERALL. 14 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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