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Technical Data Sheet
PartsTable / MRO / 323003
323003 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The FUSE,CARTRIDGE is a the manufacturer industrial component. Key specifications include material: CERAMIC CASE, body_style: TUBE TYPE, head_style: WING NO. 2, head_height: 0.531 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.438 INCHES NOMINAL IN.

This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-693-7050, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 323003
NSN: 5305-00-693-7050
FSC: 5305
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
materialCERAMIC CASE
body_styleTUBE TYPE
head_styleWING NO. 2
head_height0.531 INCHES NOMINAL IN
thread_class2A A
thread_length0.438 INCHES NOMINAL IN
overall_length1.250 INCHES NOMINAL IN
fastener_length0.750 INCHES NOMINAL IN
overall_diameter0.250 INCHES NOMINAL IN
special_featuresLINING 2
thread_directionRIGHT-HAND
features_providedNONRENEWABLE FUSIBLE ELEMENT
NSN5305-00-693-7050
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 323003 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY: 1
•
FIRST DIAMETER FROM HEAD: 0.180 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
•
HEAD STYLE: WING NO. 2
•
THREAD LENGTH: 0.438 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.250 INCHES IN
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FIRST DIAMETER FROM HEAD0.180 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN
HEAD STYLEWING NO. 2
THREAD LENGTH0.438 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TY 2 FED SPEC ALL TREATMENT RESPONSES OVERALL
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONFED-STD66 FED STD SINGLE MATERIAL RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
40231Interchangeable
interchangeable cross-reference
interchangeable
44264Interchangeable
interchangeable cross-reference
interchangeable
44434Interchangeable
interchangeable cross-reference
interchangeable
6002-951Interchangeable
interchangeable cross-reference
interchangeable
PL24283Interchangeable
interchangeable cross-reference
interchangeable
D15-665-HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 323003?
323003 is a FUSE,CARTRIDGE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 323003?
There are 15 known substitutes for 323003: 40231, 44264, 44434 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 323003?
323003 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-693-7050. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026