PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4135Control,water Heate

Therm-O-Disc Incorporated · NSN 4520-00-812-8594 · FSC 4520 · No Item Name Available
Verified by PartsTable
NSN 4520-00-812-8594 — this item is cataloged by the U.S. Government under National Stock Number 4520-00-812-8594. Primary manufacturer part number: 4135.
Features
  • Control,water Heate — FSC 4520
  • 3 verified cross-references
  • Primary manufacturer: Therm-O-Disc Incorporated
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Control,water Heate, cataloged under National Stock Number 4520-00-812-8594, is classified within Federal Supply Class 4520 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is Therm-O-Disc Incorporated. This item has 3 commercial cross-references 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 NameControl,water Heate
FSC / FSG4520 — No Item Name Available (FSG 45)
ManufacturersTherm-O-Disc Incorporated (CAGE 81439)
Technical Specifications
ParameterValue
NSN4520-00-812-8594
Primary Part Number4135
Item NameControl,water Heate
FSC / FSG4520 / 45 — No Item Name Available
ManufacturerTherm-O-Disc Incorporated
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
1650-00-013-43955135 INTERCHANGEABLE
Body,valve
Eaton Aerospace, Llc Dba Jackson South
5305-00-147-26485135 INTERCHANGEABLE
Screw,machine
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
3020-00-152-89905135 INTERCHANGEABLE
Gear,worm
Struthers Wells Corp
5330-00-171-72157116 INTERCHANGEABLE
Gasket
Cooper Machinery Services Llc
5315-00-198-5967103574 INTERCHANGEABLE
Pin,tapered,plain
Us Army Aviation and Missile Command
5330-00-214-313712068 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5306-00-226-4826AEB02C312875AW9A91 INTERCHANGEABLE
Bolt,machine
The American Society of Mechanical Engineers
5360-00-326-46115135 INTERCHANGEABLE
Spring,helical,compression
Meggitt North Hollywood Inc
6685-00-361-033200870A1 INTERCHANGEABLE
Thermometer,self-Indicating
Chaney John L Instrument Co Div of Desco Corp
4820-00-464-4496 INTERCHANGEABLE
Seat,valve
Cross-Reference Index
Part NumberManufacturer
7116 Therm-O-Disc Incorporated (USA)
4135 PRIMARY Therm-O-Disc Incorporated (USA)
5135 Therm-O-Disc Incorporated (USA)
Related Parts
1650-00-013-4395INTERCHANGEABLE
BODY,VALVE
5135
5305-00-147-2648INTERCHANGEABLE
SCREW,MACHINE
5135
3020-00-152-8990INTERCHANGEABLE
GEAR,WORM
5135
5330-00-171-7215INTERCHANGEABLE
GASKET
7116
5315-00-198-5967INTERCHANGEABLE
PIN,TAPERED,PLAIN
103574
5330-00-214-3137INTERCHANGEABLE
GASKET
12068
5306-00-226-4826INTERCHANGEABLE
BOLT,MACHINE
AEB02C312875AW9A91
5360-00-326-4611INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5135
6685-00-361-0332INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
00870A1
4820-00-464-4496INTERCHANGEABLE
SEAT,VALVE
5935-00-500-5183INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
PL-259A
4730-00-554-8878INTERCHANGEABLE
ELBOW,TUBE TO BOSS

Frequently Asked Questions

What is NSN 4520-00-812-8594?

NSN 4520-00-812-8594 is a Control,water Heate, manufactured by Therm-O-Disc Incorporated, classified under FSC 4520 (No Item Name Available). Status: active.

What are the part numbers for NSN 4520-00-812-8594?

NSN 4520-00-812-8594 has 3 cross-referenced part numbers: 7116 (Therm-O-Disc Incorporated), 4135 (Therm-O-Disc Incorporated), 5135 (Therm-O-Disc Incorporated).

What NSN replaces 4520-00-812-8594?

There are 12 known substitutes for 4520-00-812-8594: 1650-00-013-4395, 5305-00-147-2648, 3020-00-152-8990 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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