PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

F54Heater,thermal Release

Name: F54
SKU: 5999-00-757-1755

Challenger Electrical Equipment Corp · NSN 5999-00-757-1755 · FSC 5999 · No Item Name Available

Verified by PartsTable

NSN 5999-00-757-1755 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-757-1755. Primary manufacturer part number: F54.

5999-00-757-1755 — No Item Name Available illustration

Features

Heater,thermal Release — FSC 5999
Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S)
Mounting Hole Diameter: 0.188 INCHES NOMINAL IN
Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S)
Mounting Hole Diameter: 0.188 INCHES NOMINAL IN
4 verified cross-references
Primary manufacturer: Challenger Electrical Equipment Corp

Applications

Industrial maintenance and repair
Government and military logistics
Equipment overhaul and refurbishment

General Description

The Heater,thermal Release, cataloged under National Stock Number 5999-00-757-1755, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Challenger Electrical Equipment Corp. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Cancelled. Unit of issue: EA.

Technical Specifications

Parameter	Value
NSN	5999-00-757-1755
Primary Part Number	F54
Item Name	Heater,thermal Release
FSC / FSG	5999 / 59 — No Item Name Available
Manufacturer	Challenger Electrical Equipment Corp
Status	CANCELLED
Mounting Facility Type and Quantity	4 UNTHREADED HOLE(S)
Mounting Hole Diameter	0.188 INCHES NOMINAL IN
Mounting Facility Type and Quantity	4 UNTHREADED HOLE(S)
Mounting Hole Diameter	0.188 INCHES NOMINAL IN

Lifecycle & Compliance

Acquisition Status	CANCELLED
Successor	5999-01-380-1088
HAZMAT	No
Shelf Life Code	0
Criticality Code	N
Unit of Issue	EA
SMR Code	JN

⇄ Verified Substitutes 12

5999-00-872-0690 SUCCESSOR

No Item Name Available

5999-01-380-1088 SUCCESSOR

Contact Assembly,electrical

7025-01-434-24432007005-1 SUCCESSOR

Display Unit

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp

5999-01-564-5798758-0628 SUCCESSOR

Contact,electrical

Rs Americas Inc

5310-00-011-6123MS35338-69 INTERCHANGEABLE

Washer,lock

National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use

3110-00-156-50181201 INTERCHANGEABLE

Bearing,ball,annular

Kearfott Corporation Div Guidance and Navigation Division

6680-00-241-2851F 54 INTERCHANGEABLE

Indicator,sight,liquid

Ldi Industries, Inc. Dba Ldi Industries Inc

3020-00-252-734750-4 INTERCHANGEABLE

Chain,roller

Union Chain Div of Ust Inc

2530-00-272-7518MCFE050 INTERCHANGEABLE

Weight,wheel Balancing

Napa Automotive Parts Co

4920-00-324-1762 INTERCHANGEABLE

Element,heater

Cross-Reference Index

Part Number	Manufacturer
F54	Challenger Electrical Equipment Corp (USA)
F50-0	Challenger Electrical Equipment Corp (USA)
F50	Challenger Electrical Equipment Corp (USA)
F56	Challenger Electrical Equipment Corp (USA)

Related Parts

SUCCESSOR 5999-01-380-1088 Contact Assembly,electrical

5999-00-872-0690SUCCESSOR

NO ITEM NAME AVAILABLE

7025-01-434-2443SUCCESSOR

DISPLAY UNIT

2007005-1

5999-01-564-5798SUCCESSOR

CONTACT,ELECTRICAL

758-0628

5310-00-011-6123INTERCHANGEABLE

WASHER,LOCK

MS35338-69

3110-00-156-5018INTERCHANGEABLE

BEARING,BALL,ANNULAR

1201

6680-00-241-2851INTERCHANGEABLE

INDICATOR,SIGHT,LIQUID

F 54

3020-00-252-7347INTERCHANGEABLE

CHAIN,ROLLER

50-4

2530-00-272-7518INTERCHANGEABLE

WEIGHT,WHEEL BALANCING

MCFE050

4920-00-324-1762INTERCHANGEABLE

ELEMENT,HEATER

2920-00-440-6331INTERCHANGEABLE

COIL,IGNITION

CAH-4003-1

3120-00-633-7982INTERCHANGEABLE

BEARING,SLEEVE

1881668

Frequently Asked Questions

What is NSN 5999-00-757-1755?

NSN 5999-00-757-1755 is a Heater,thermal Release, manufactured by Challenger Electrical Equipment Corp, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-757-1755?

NSN 5999-00-757-1755 has 4 cross-referenced part numbers: F54 (Challenger Electrical Equipment Corp), F50-0 (Challenger Electrical Equipment Corp), F50 (Challenger Electrical Equipment Corp), F56 (Challenger Electrical Equipment Corp).

What NSN replaces 5999-00-757-1755?

There are 12 known substitutes for 5999-00-757-1755: 5999-00-872-0690, 5999-01-380-1088, 7025-01-434-2443 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of F54?

Key specifications for F54: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); Overall Width: 0.500 INCHES NOMINAL IN; Overall Height: 1.188 INCHES NOMINAL IN; Overall Length: 2.188 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-757-1755 still in active supply?

NSN 5999-00-757-1755 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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

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