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Technical Data Sheet
MILC5501TYPE1CLASSASIZE32 ✓ 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: 3.500 INCHES NOMINAL IN, surface_treatment: CHROMATE OR ANODIZE, nondefinitive_spec/std_data: 1 TYPE AND A CLASS AND 32 SIZE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-804-1254, 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
MILC5501TYPE1CLASSASIZE32
NSN: 5340-00-804-1254
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_diameter3.500 INCHES NOMINAL IN
surface_treatmentCHROMATE OR ANODIZE
nondefinitive_spec/std_data1 TYPE AND A CLASS AND 32 SIZE
material_document_and_classificationQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator2-1/2-12 UN
surface_treatment_document_and_classificationMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
NSN5340-00-804-1254
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MILC5501TYPE1CLASSASIZE32 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
SURFACE TREATMENT: CHROMATE OR ANODIZE
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL: ALUMINUM ALLOY 3003
DRIVE TYPE: SERRATED OR SQUARE HEAD OR HEX SOCKET
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND A CLASS AND 32 SIZE
DESIGN TYPE: THREADED
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 2-1/2-12 UN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCHROMATE OR ANODIZE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/2 FED SPEC SINGLE MATERIAL RESPONSE
MATERIALALUMINUM ALLOY 3003
DRIVE TYPESERRATED OR SQUARE HEAD OR HEX SOCKET
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-5541, CLASS 1A MIL SPEC SINGLE TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE A
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A CLASS AND 32 SIZE
DESIGN TYPETHREADED
THREAD SIZE AND SERIES/TYPE DESIGNATOR2-1/2-12 UN
OVERALL DIAMETER3.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
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
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MILC5501TYPE1CLASSASIZE32?
MILC5501TYPE1CLASSASIZE32 is a PLUG,PROTECTIVE,DUST AND MOISTUR.
What parts can replace MILC5501TYPE1CLASSASIZE32?
There are 31 known substitutes for MILC5501TYPE1CLASSASIZE32: 5340PL1866828, 81584, 10160009 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MILC5501TYPE1CLASSASIZE32?
MILC5501TYPE1CLASSASIZE32 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-804-1254. This indicates validated use in U.S. government and defense supply chains.
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