PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2553Disk

Spence Engineering Co Inc Dba Nicholson Steam Trap · NSN 4820-00-957-3205 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-957-3205 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-957-3205. Primary manufacturer part number: 2553.
Features
  • Disk — FSC 4820
  • 1 verified cross-reference
  • Primary manufacturer: Spence Engineering Co Inc Dba Nicholson Steam Trap
Applications
  • Flow control in piping systems
  • Water treatment infrastructure
  • Industrial process control
General Description

The Disk, cataloged under National Stock Number 4820-00-957-3205, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Spence Engineering Co Inc Dba Nicholson Steam Trap. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameDisk
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersSpence Engineering Co Inc Dba Nicholson Steam Trap (CAGE 82483)
Technical Specifications
ParameterValue
NSN4820-00-957-3205
Primary Part Number2553
Item NameDisk
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerSpence Engineering Co Inc Dba Nicholson Steam Trap
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3040-00-057-0225 INTERCHANGEABLE
Lining,refractory
5307-00-196-900625-23 INTERCHANGEABLE
Stud,plain
Textron Lycoming Inc Williamsport Plant
5120-00-807-91032113017 INTERCHANGEABLE
Compressing Tool,splicing Sleeve
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
7195-00-842-81352553 INTERCHANGEABLE
Table,work
Lyon Workspace Products, L.l.c.
3439-01-072-5363 INTERCHANGEABLE
Handle,welding Torch
5330-01-118-79202553 INTERCHANGEABLE
Gasket
Flowserve Inc
4320-01-249-7964 INTERCHANGEABLE
Pump,rotary
5307-01-332-1485 INTERCHANGEABLE
Stud,plain
6760-01-356-7085 INTERCHANGEABLE
Screen,focusing,photographic
1005-01-445-6804MFX-255-3 INTERCHANGEABLE
Cleaning Kit,gun
Otis Products, Inc. Dba Otis Technology
Cross-Reference Index
Part NumberManufacturer
2553 PRIMARY Spence Engineering Co Inc Dba Nicholson Steam Trap (USA)
Related Parts
3040-00-057-0225INTERCHANGEABLE
LINING,REFRACTORY
5307-00-196-9006INTERCHANGEABLE
STUD,PLAIN
25-23
5120-00-807-9103INTERCHANGEABLE
COMPRESSING TOOL,SPLICING SLEEVE
2113017
7195-00-842-8135INTERCHANGEABLE
TABLE,WORK
2553
3439-01-072-5363INTERCHANGEABLE
HANDLE,WELDING TORCH
5330-01-118-7920INTERCHANGEABLE
GASKET
2553
4320-01-249-7964INTERCHANGEABLE
PUMP,ROTARY
5307-01-332-1485INTERCHANGEABLE
STUD,PLAIN
6760-01-356-7085INTERCHANGEABLE
SCREEN,FOCUSING,PHOTOGRAPHIC
1005-01-445-6804INTERCHANGEABLE
CLEANING KIT,GUN
MFX-255-3
6030-01-543-5829INTERCHANGEABLE
REPEATER,LIGHT SIGNAL
2553
6625-01-662-8652INTERCHANGEABLE
OSCILLOSCOPE
2553

Frequently Asked Questions

What is NSN 4820-00-957-3205?

NSN 4820-00-957-3205 is a Disk, manufactured by Spence Engineering Co Inc Dba Nicholson Steam Trap, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-957-3205?

NSN 4820-00-957-3205 has 1 cross-referenced part number: 2553 (Spence Engineering Co Inc Dba Nicholson Steam Trap).

What NSN replaces 4820-00-957-3205?

There are 12 known substitutes for 4820-00-957-3205: 3040-00-057-0225, 5307-00-196-9006, 5120-00-807-9103 and 9 more. Verify interchangeability with system specifications before substitution.

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