PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

481875ITEM17Seat,valve

Naval Ship Systems Command · NSN 4820-00-369-3629 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-369-3629 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-369-3629. Primary manufacturer part number: 481875ITEM17.
Features
  • Seat,valve — FSC 4820
  • Material: STEEL OVERALL
  • Hardness Rating: 22.0 ROCKWELL C MINIMUM BODY
  • Seating Surface Shape: FLAT
  • Style Designator: PLAIN
  • Hardness Rating: 33.0 ROCKWELL C MAXIMUM FACE
  • Body Inside Diameter: 0.438 INCHES NOMINAL IN
  • Body Outside Diameter: 0.659 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-369-3629, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-369-3629
Primary Part Number481875ITEM17
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusCANCELLED
MaterialSTEEL OVERALL
Hardness Rating22.0 ROCKWELL C MINIMUM BODY
Seating Surface ShapeFLAT
Style DesignatorPLAIN
Hardness Rating33.0 ROCKWELL C MAXIMUM FACE
Body Inside Diameter0.438 INCHES NOMINAL IN
Body Outside Diameter0.659 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 11
3110-00-100-055125821 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
5935-00-112-323238250 INTERCHANGEABLE
Connector,plug,electrical
Amphenol Corporation Div Amphenol Rf
5330-00-250-5817 INTERCHANGEABLE
Gasket
4720-00-274-11541525-6 INTERCHANGEABLE
Hose,nonmetallic
Danfoss Power Solutions II, Llc
1650-00-486-181237551 INTERCHANGEABLE
Bearing Assy- De-Ic
Goodrich Corporation Dba Goodrich Corp
5305-00-727-3804MS90725-165 INTERCHANGEABLE
Screw,cap,hexagon Head
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
6610-01-223-31903755-1 INTERCHANGEABLE
Link Assembly,arm
Kearflex Engineering Company
3040-01-316-05613755-1 INTERCHANGEABLE
Weight,counterbalance
Naval Air Warfare Ctr Aircraft Div
5365-01-348-397338250 INTERCHANGEABLE
Spacer,ring
Dana Commercial Vehicle Products, Llc
4730-01-396-5202ED00375R0510-S INTERCHANGEABLE
Clamp,hose
Deutz Corporation
Cross-Reference Index
Part NumberManufacturer
38250 Eaton Aerospace, Llc Dba Jackson South (USA)
39753-15PC62 Eaton Aerospace, Llc Dba Jackson South (USA)
39461-3PC72 Eaton Aerospace, Llc Dba Jackson South (USA)
44491-14ITEM17 Eaton Aerospace, Llc Dba Jackson South (USA)
39461-1PC45 Eaton Aerospace, Llc Dba Jackson South (USA)
42839-14ITEM17 Eaton Aerospace, Llc Dba Jackson South (USA)
481875ITEM17 PRIMARY Naval Ship Systems Command (USA)
387538PC61 PRIMARY Naval Ship Systems Command (USA)
387527PC72 PRIMARY Naval Ship Systems Command (USA)
34310B10PC61 PRIMARY Bae Systems Land & Armaments L.p. (USA)
3435A3PC45 PRIMARY Bae Systems Land & Armaments L.p. (USA)
394144PC62 PRIMARY Naval Ship Systems Command (USA)
39461-17PC72 Reidville Hydraulics & Mfg Inc (USA)
484860PC5 PRIMARY Naval Ship Systems Command (USA)
39461-2PC45 Reidville Hydraulics & Mfg Inc (USA)
62669-2PC78 Reidville Hydraulics & Mfg Inc (USA)
432413PC62 PRIMARY Naval Ship Systems Command (USA)
3435A2PC45 Fmc Corp (USA)
402213PC62 PRIMARY Naval Ship Systems Command (USA)
42852-5PC4 Eaton Aerospace, Llc Dba Jackson South (USA)
Related Parts
3110-00-100-0551INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
25821
5935-00-112-3232INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
38250
5330-00-250-5817INTERCHANGEABLE
GASKET
4720-00-274-1154INTERCHANGEABLE
HOSE,NONMETALLIC
1525-6
1650-00-486-1812INTERCHANGEABLE
BEARING ASSY- DE-IC
37551
5305-00-727-3804INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
MS90725-165
6610-01-223-3190INTERCHANGEABLE
LINK ASSEMBLY,ARM
3755-1
3040-01-316-0561INTERCHANGEABLE
WEIGHT,COUNTERBALANCE
3755-1
5365-01-348-3973INTERCHANGEABLE
SPACER,RING
38250
4730-01-396-5202INTERCHANGEABLE
CLAMP,HOSE
ED00375R0510-S
7045-01-440-6623INTERCHANGEABLE
SCREEN,ANTI-GLARE
38250

Frequently Asked Questions

What is NSN 4820-00-369-3629?

NSN 4820-00-369-3629 is a Seat,valve, manufactured by Naval Ship Systems Command, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-369-3629?

NSN 4820-00-369-3629 has 50 cross-referenced part numbers: 38250 (Eaton Aerospace, Llc Dba Jackson South), 39753-15PC62 (Eaton Aerospace, Llc Dba Jackson South), 39461-3PC72 (Eaton Aerospace, Llc Dba Jackson South), 44491-14ITEM17 (Eaton Aerospace, Llc Dba Jackson South), 39461-1PC45 (Eaton Aerospace, Llc Dba Jackson South) and 45 more.

What NSN replaces 4820-00-369-3629?

There are 11 known substitutes for 4820-00-369-3629: 3110-00-100-0551, 5935-00-112-3232, 5330-00-250-5817 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 481875ITEM17?

Key specifications for 481875ITEM17: Material: STEEL OVERALL; Hardness Rating: 22.0 ROCKWELL C MINIMUM BODY; Seating Surface Shape: FLAT; Special Features: OUTSIDE CORNER HAS 2.0 DEG BY 0.094 IN.CHAMPHER IN. 9 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-369-3629 still in active supply?

NSN 4820-00-369-3629 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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