Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
PLUG,PROTECTIVE,DUST AND MOISTUR. Key specifications include material: ALUMINUM ALLOY 3003, design_type: THREADED, overall_diameter: 0.875 INCHES NOMINAL IN, surface_treatment: CHROMATE, material_document_and_classification: QQ-A-250/2, TEMPER 0 FED SPEC SINGLE MATERIAL RESPONSE, thread_size_and_series/type_designator: 0.250-18 NPT. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-804-0784, 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
M5501/5-4
NSN:5340-00-804-0784 FSC:5340 CAGE:81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
material
ALUMINUM ALLOY 3003
design_type
THREADED
overall_diameter
0.875 INCHES NOMINAL IN
surface_treatment
CHROMATE
material_document_and_classification
QQ-A-250/2, TEMPER 0 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator
0.250-18 NPT
surface_treatment_document_and_classification
MIL-A-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A
NSN
5340-00-804-0784
COMPONENT DIAGRAM
KEY FEATURES
•
SURFACE TREATMENT: CHROMATE
•
OVERALL DIAMETER: 0.875 INCHES NOMINAL IN
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.250-18 NPT
•
MATERIAL: ALUMINUM ALLOY 3003
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A
•
DESIGN TYPE: THREADED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/2, TEMPER 0 FED SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT
CHROMATE
OVERALL DIAMETER
0.875 INCHES NOMINAL IN
THREAD SIZE AND SERIES/TYPE DESIGNATOR
0.250-18 NPT
MATERIAL
ALUMINUM ALLOY 3003
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
MIL-A-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE A
DESIGN TYPE
THREADED
MATERIAL DOCUMENT AND CLASSIFICATION
QQ-A-250/2, TEMPER 0 FED SPEC SINGLE MATERIAL RESPONSE
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FREQUENTLY ASKED QUESTIONS
What is M5501/5-4?
M5501/5-4 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace M5501/5-4?
There are 13 known substitutes for M5501/5-4: P-38, M5501/5-R6, NAS840P6 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M5501/5-4?
M5501/5-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-804-0784. This indicates validated use in U.S. government and defense supply chains.
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