PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NL2111-1Cup,locking

Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions · NSN 4820-01-086-8703 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-086-8703 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-086-8703. Primary manufacturer part number: NL2111-1.
Features
  • Cup,locking — FSC 4820
  • General Characteristics Item Description: CORROSION RESISTANT STEEL
  • 6 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Cup,locking, cataloged under National Stock Number 4820-01-086-8703, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 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
NSN4820-01-086-8703
Primary Part NumberNL2111-1
Item NameCup,locking
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
StatusACTIVE
General Characteristics Item DescriptionCORROSION RESISTANT STEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2910-00-213-850773766 INTERCHANGEABLE
Sleeve,relief Valve
Honeywell International Inc. Div Aerospace - Torrance
5360-00-290-5443 INTERCHANGEABLE
Spring,helical,extension
4820-00-996-1132572029 INTERCHANGEABLE
Spool,hydraulic Val
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Valve Division
4820-01-085-741173687-1 INTERCHANGEABLE
Poppet Assembly,valve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
5330-01-086-44624615SH959M INTERCHANGEABLE
Ring,wiper
Parker-Hannifin Corporation Div Engineered Polymer Systems Division (eps)
3040-01-087-129473769 INTERCHANGEABLE
Ring,piston
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
4820-01-092-889373689-1 INTERCHANGEABLE
Retainer Assembly,valve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
4820-01-093-648573405 ITEM 49 INTERCHANGEABLE
Cup,locking
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
5305-01-121-255473405 ITEM 43 INTERCHANGEABLE
Screw,shoulder,valv
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
3450-01-133-1478 INTERCHANGEABLE
Cutter Feed Device
Cross-Reference Index
Part NumberManufacturer
NL2111-1 Dresser-Rand Company (USA)
73405 Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
NL2111-1 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA)
NL2111-1 Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp (USA)
73405-270 Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
73766 Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
Related Parts
2910-00-213-8507INTERCHANGEABLE
SLEEVE,RELIEF VALVE
73766
5360-00-290-5443INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
4820-00-996-1132INTERCHANGEABLE
SPOOL,HYDRAULIC VAL
572029
4820-01-085-7411INTERCHANGEABLE
POPPET ASSEMBLY,VALVE
73687-1
5330-01-086-4462INTERCHANGEABLE
RING,WIPER
4615SH959M
3040-01-087-1294INTERCHANGEABLE
RING,PISTON
73769
4820-01-092-8893INTERCHANGEABLE
RETAINER ASSEMBLY,VALVE
73689-1
4820-01-093-6485INTERCHANGEABLE
CUP,LOCKING
73405 ITEM 49
5305-01-121-2554INTERCHANGEABLE
SCREW,SHOULDER,VALV
73405 ITEM 43
3450-01-133-1478INTERCHANGEABLE
CUTTER FEED DEVICE
4810-01-190-3624INTERCHANGEABLE
COUPLING,VALVE
5310-01-369-9405INTERCHANGEABLE
NUT,PLAIN,HEXAGON
73766

Frequently Asked Questions

What is NSN 4820-01-086-8703?

NSN 4820-01-086-8703 is a Cup,locking, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-086-8703?

NSN 4820-01-086-8703 has 6 cross-referenced part numbers: NL2111-1 (Dresser-Rand Company), 73405 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), NL2111-1 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), NL2111-1 (Pentair Valves & Controls Us Lp Div Flow Control Us Holding Corp), 73405-270 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator) and 1 more.

What NSN replaces 4820-01-086-8703?

There are 12 known substitutes for 4820-01-086-8703: 2910-00-213-8507, 5360-00-290-5443, 4820-00-996-1132 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NL2111-1?

Key specifications for NL2111-1: General Characteristics Item Description: CORROSION RESISTANT STEEL. 1 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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