PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5005-3-18Seat,valve

Hunt Valve Company, Inc. · NSN 4820-01-503-3321 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-503-3321 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-503-3321. Primary manufacturer part number: 5005-3-18.
Features
  • Seat,valve — FSC 4820
  • Seating Surface Shape: FLAT
  • Material: NICKEL ALLOY SEAT
  • 3 verified cross-references
  • Primary manufacturer: Hunt Valve Company, Inc.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Seat construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-503-3321, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-01-503-3321
Primary Part Number5005-3-18
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerHunt Valve Company, Inc.
StatusACTIVE
Seating Surface ShapeFLAT
MaterialNICKEL ALLOY SEAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5930-00-064-774950053 INTERCHANGEABLE
Switch
Cole Hersee Company
5325-00-465-2908500-53 INTERCHANGEABLE
Ring,retaining
Fl Industries Inc Pneumotive Div
1650-00-510-967550053 INTERCHANGEABLE
Cylinder Assembly,canopy
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
2805-00-511-32051834Y INTERCHANGEABLE
Sprocket,camshaft
Navistar Intl Corp Truck Br Ohio Plant
5310-00-523-2002SC-B-69235 INTERCHANGEABLE
Washer,flat
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5905-00-717-18155005-3 INTERCHANGEABLE
Holder,resistor
Interplex Nascal Inc
5305-00-725-2317AES01C375A50AW9A91 INTERCHANGEABLE
Screw,cap,hexagon Head
The American Society of Mechanical Engineers
2805-00-847-173550053 INTERCHANGEABLE
Oil Pump Assembly,engine
Trw Inc Trw Intl Trade Government Sales Dept
7510-01-249-734250-053 INTERCHANGEABLE
Ribbon,inking
Nec Corporation of America Dba N E C Home Electronics
5340-01-340-59965005-3 INTERCHANGEABLE
Handle,bow
L3harris Technologies, Inc. Div Space and Airborne Systems
Cross-Reference Index
Part NumberManufacturer
5005-3-18 PRIMARY Hunt Valve Company, Inc. (USA)
5005-3-18 Pima Valve, Llc (USA)
5005-3 Pima Valve, Llc (USA)
Related Parts
5930-00-064-7749INTERCHANGEABLE
SWITCH
50053
5325-00-465-2908INTERCHANGEABLE
RING,RETAINING
500-53
1650-00-510-9675INTERCHANGEABLE
CYLINDER ASSEMBLY,CANOPY
50053
2805-00-511-3205INTERCHANGEABLE
SPROCKET,CAMSHAFT
1834Y
5310-00-523-2002INTERCHANGEABLE
WASHER,FLAT
SC-B-69235
5905-00-717-1815INTERCHANGEABLE
HOLDER,RESISTOR
5005-3
5305-00-725-2317INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
AES01C375A50AW9A91
2805-00-847-1735INTERCHANGEABLE
OIL PUMP ASSEMBLY,ENGINE
50053
7510-01-249-7342INTERCHANGEABLE
RIBBON,INKING
50-053
5340-01-340-5996INTERCHANGEABLE
HANDLE,BOW
5005-3
4820-01-503-2784INTERCHANGEABLE
DISK,VALVE
5005-3-4
4820-01-503-3534INTERCHANGEABLE
FLANGE,GLAND,VALVE
5005-3-8

Frequently Asked Questions

What is NSN 4820-01-503-3321?

NSN 4820-01-503-3321 is a Seat,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-503-3321?

NSN 4820-01-503-3321 has 3 cross-referenced part numbers: 5005-3-18 (Hunt Valve Company, Inc.), 5005-3-18 (Pima Valve, Llc), 5005-3 (Pima Valve, Llc).

What NSN replaces 4820-01-503-3321?

There are 12 known substitutes for 4820-01-503-3321: 5930-00-064-7749, 5325-00-465-2908, 1650-00-510-9675 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5005-3-18?

Key specifications for 5005-3-18: Seating Surface Shape: FLAT; Material: NICKEL ALLOY SEAT; Special Features: NHA VALVE,GATE,FLANGED,250LB CLASS LBS. 3 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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