PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1656PSeat,valve

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4810-00-147-0371 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-147-0371 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-147-0371. Primary manufacturer part number: 1656P.
Features
  • Seat,valve — FSC 4810
  • Thread Class: 2A SINGLE THREADED PORTION A
  • Seating Surface Shape: FLAT
  • Thread Length: 0.469 INCHES NOMINAL SINGLE THREADED PORTION IN
  • Style Designator: PLAIN THREADED
  • Thread Series Designator: UN SINGLE THREADED PORTION
  • 4 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Seat,valve, cataloged under National Stock Number 4810-00-147-0371, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN4810-00-147-0371
Primary Part Number1656P
Item NameSeat,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
Thread Class2A SINGLE THREADED PORTION A
Seating Surface ShapeFLAT
Thread Length0.469 INCHES NOMINAL SINGLE THREADED PORTION IN
Style DesignatorPLAIN THREADED
Thread Series DesignatorUN SINGLE THREADED PORTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2990-00-003-0107T-11236 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
5355-00-060-5685A11236 INTERCHANGEABLE
Knob
Dne Technologies, Inc
3110-00-156-468907033 INTERCHANGEABLE
Bearing,ball,annular
Hoffman/new Yorker, Inc.
5360-00-256-72031-1236 INTERCHANGEABLE
Spring,helical,compression
Terex Usa, Llc Dba Terex Equipment Services
5331-00-291-3069MS29513-236 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
6625-00-649-3074112-36 INTERCHANGEABLE
Meter,audio Level
Keysight Technologies Inc
5136-00-729-568354779 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
5305-00-842-1391 INTERCHANGEABLE
Screw,machine
3120-00-981-0105 INTERCHANGEABLE
Bearing,sleeve
2590-01-082-1420D76966 INTERCHANGEABLE
Projector,air Horn
Cnh Industrial America Llc Dba Cnh America
Cross-Reference Index
Part NumberManufacturer
1656P PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
11236 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
1656P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
11236 Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
2990-00-003-0107INTERCHANGEABLE
MUFFLER,EXHAUST
T-11236
5355-00-060-5685INTERCHANGEABLE
KNOB
A11236
3110-00-156-4689INTERCHANGEABLE
BEARING,BALL,ANNULAR
07033
5360-00-256-7203INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
1-1236
5331-00-291-3069INTERCHANGEABLE
O-RING
MS29513-236
6625-00-649-3074INTERCHANGEABLE
METER,AUDIO LEVEL
112-36
5136-00-729-5683INTERCHANGEABLE
TAP,THREAD CUTTING
54779
5305-00-842-1391INTERCHANGEABLE
SCREW,MACHINE
3120-00-981-0105INTERCHANGEABLE
BEARING,SLEEVE
2590-01-082-1420INTERCHANGEABLE
PROJECTOR,AIR HORN
D76966
6350-01-168-7689INTERCHANGEABLE
CLAPPER,ELECTRIC BELL
5930-01-215-0347INTERCHANGEABLE
SWITCH,SENSITIVE

Frequently Asked Questions

What is NSN 4810-00-147-0371?

NSN 4810-00-147-0371 is a Seat,valve, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-00-147-0371?

NSN 4810-00-147-0371 has 4 cross-referenced part numbers: 1656P (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 11236 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 1656P (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), 11236 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).

What NSN replaces 4810-00-147-0371?

There are 12 known substitutes for 4810-00-147-0371: 2990-00-003-0107, 5355-00-060-5685, 3110-00-156-4689 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1656P?

Key specifications for 1656P: Thread Class: 2A SINGLE THREADED PORTION A; Seating Surface Shape: FLAT; Thread Length: 0.469 INCHES NOMINAL SINGLE THREADED PORTION IN; Overall Height: 0.469 INCHES NOMINAL IN. 6 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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