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Technical Data Sheet
MILC5501TYPE3CLASS3SIZE2 ✓ Verified by PartsTable
· ORING SEAL
WHAT YOU NEED TO KNOW
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, drive_type: SERRATED OR SQUARE HEAD OR HEX SOCKET, design_type: THREADED, overall_diameter: 0.440 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN, surface_treatment: CHROMATE OR ANODIZE, nondefinitive_spec/std_data: 3 TYPE AND A CLASS AND 2 SIZE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-804-1229, 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
MILC5501TYPE3CLASS3SIZE2
NSN: 5340-00-804-1229
FSC: 5340
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY 3003
drive_typeSERRATED OR SQUARE HEAD OR HEX SOCKET
design_typeTHREADED
overall_diameter0.440 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
surface_treatmentCHROMATE OR ANODIZE
nondefinitive_spec/std_data3 TYPE AND A CLASS AND 2 SIZE
material_document_and_classificationQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator5/16-24 NF
surface_treatment_document_and_classificationMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
NSN5340-00-804-1229
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MILC5501TYPE3CLASS3SIZE2 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 5/16-24 NF
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
NONDEFINITIVE SPEC/STD DATA: 3 TYPE AND A CLASS AND 2 SIZE
MATERIAL: ALUMINUM ALLOY 3003
SURFACE TREATMENT: CHROMATE OR ANODIZE
DESIGN TYPE: THREADED
DRIVE TYPE: SERRATED OR SQUARE HEAD OR HEX SOCKET
OVERALL DIAMETER: 0.440 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE AND SERIES/TYPE DESIGNATOR5/16-24 NF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
NONDEFINITIVE SPEC/STD DATA3 TYPE AND A CLASS AND 2 SIZE
MATERIALALUMINUM ALLOY 3003
SURFACE TREATMENTCHROMATE OR ANODIZE
DESIGN TYPETHREADED
DRIVE TYPESERRATED OR SQUARE HEAD OR HEX SOCKET
OVERALL DIAMETER0.440 INCHES MINIMUM AND 0.620 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
5340PL1866828Interchangeable
interchangeable cross-reference
interchangeable
81584Interchangeable
interchangeable cross-reference
interchangeable
10160009Interchangeable
interchangeable cross-reference
interchangeable
M5501/1-4Interchangeable
interchangeable cross-reference
interchangeable
10117358Interchangeable
interchangeable cross-reference
interchangeable
5-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILC5501TYPE3CLASS3SIZE2?
MILC5501TYPE3CLASS3SIZE2 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace MILC5501TYPE3CLASS3SIZE2?
There are 30 known substitutes for MILC5501TYPE3CLASS3SIZE2: 5340PL1866828, 81584, 10160009 and 27 more. Substitute compatibility should be verified for your specific system.
Is MILC5501TYPE3CLASS3SIZE2 still available?
MILC5501TYPE3CLASS3SIZE2 is currently cancelled.
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