PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1-729X1-733Disk,valve

Cosmodyne, Llc Dba Cosmodyne Llc · NSN 4820-00-411-2681 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-411-2681 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-411-2681. Primary manufacturer part number: 1-729X1-733.
Features
  • Disk,valve — FSC 4820
  • Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
  • Criticality Code Justification: ZZZY
  • 5 verified cross-references
  • Primary manufacturer: Cosmodyne, Llc Dba Cosmodyne Llc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-411-2681, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Cosmodyne, Llc Dba Cosmodyne Llc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN4820-00-411-2681
Primary Part Number1-729X1-733
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerCosmodyne, Llc Dba Cosmodyne Llc
StatusACTIVE
Reference Number Differentiating CharacteristicsCLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5905-00-052-7333217063P27 INTERCHANGEABLE
Resistor,fixed,wire Wound
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5905-00-089-69071733-1 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Rockwell Collins, Inc. Dba Rc Displays Systems
3110-00-100-03491729 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
4730-00-244-6516 INTERCHANGEABLE
Fitting,lubrication
2520-00-330-3673360948 INTERCHANGEABLE
Cover and Pressure
Borg-Warner Corp
5120-00-409-3742 INTERCHANGEABLE
Extractor,circuit C
5998-00-444-2835361078-2 INTERCHANGEABLE
Electronic Components Assembly
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
2530-00-462-1991 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
3805-00-484-0760 INTERCHANGEABLE
Check Poppet
5315-00-597-570615015 INTERCHANGEABLE
Key,machine
Triumph Engine Control Systems Llc
Cross-Reference Index
Part NumberManufacturer
1-729X1-733 Cosmodyne, Llc Dba Cosmodyne Llc (USA)
1-733 Cosmodyne, Llc Dba Cosmodyne Llc (USA)
1-729CP Naval Inventory Control Point Mechanicsburg (USA)
1-729 Cosmodyne, Llc Dba Cosmodyne Llc (USA)
1-729X1-733CP Naval Inventory Control Point Mechanicsburg (USA)
Related Parts
5905-00-052-7333INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
217063P27
5905-00-089-6907INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
1733-1
3110-00-100-0349INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
1729
4730-00-244-6516INTERCHANGEABLE
FITTING,LUBRICATION
2520-00-330-3673INTERCHANGEABLE
COVER AND PRESSURE
360948
5120-00-409-3742INTERCHANGEABLE
EXTRACTOR,CIRCUIT C
5998-00-444-2835INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
361078-2
2530-00-462-1991INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
3805-00-484-0760INTERCHANGEABLE
CHECK POPPET
5315-00-597-5706INTERCHANGEABLE
KEY,MACHINE
15015
5905-00-787-0220INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
B12J750
5910-00-798-5751INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
17-29

Frequently Asked Questions

What is NSN 4820-00-411-2681?

NSN 4820-00-411-2681 is a Disk,valve, manufactured by Cosmodyne, Llc Dba Cosmodyne Llc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-411-2681?

NSN 4820-00-411-2681 has 5 cross-referenced part numbers: 1-729X1-733 (Cosmodyne, Llc Dba Cosmodyne Llc), 1-733 (Cosmodyne, Llc Dba Cosmodyne Llc), 1-729CP (Naval Inventory Control Point Mechanicsburg), 1-729 (Cosmodyne, Llc Dba Cosmodyne Llc), 1-729X1-733CP (Naval Inventory Control Point Mechanicsburg).

What NSN replaces 4820-00-411-2681?

There are 12 known substitutes for 4820-00-411-2681: 5905-00-052-7333, 5905-00-089-6907, 3110-00-100-0349 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1-729X1-733?

Key specifications for 1-729X1-733: Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW THE LATEST REVISION OF MIL-STD-1330; Criticality Code Justification: ZZZY. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com