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Technical Data Sheet
PartsTable / COMPONENT / 204-012-129-01
204-012-129-01 ✓ 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

The PLATE,MENDING is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY 2024, overall_width: 0.530 INCHES NOMINAL IN, overall_length: 2.330 INCHES NOMINAL IN, special_features: ENDS RADIUSED 0.370 IN. MIN AND 0.400 IN.

MAX IN, style_designator: RECTANGULAR, surface_treatment: PRIMER EPOXY. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-248-7135, 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
204-012-129-01
NSN: 5340-01-248-7135
FSC: 5340
CAGE: 97499 — BELL TEXTRON INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
hole_quantity2
overall_width0.530 INCHES NOMINAL IN
overall_length2.330 INCHES NOMINAL IN
special_featuresENDS RADIUSED 0.370 IN. MIN AND 0.400 IN. MAX IN
style_designatorRECTANGULAR
surface_treatmentPRIMER EPOXY
material_thickness0.187 INCHES NOMINAL IN
mounting_hole_typePLAIN
mounting_hole_diameter0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
material_document_and_classificationQQ-A-250/4,T3 OR T4 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationMIL-P-23377,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
NSN5340-01-248-7135
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 204-012-129-01 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-250/4,T3 OR T4 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL THICKNESS: 0.187 INCHES NOMINAL IN
•
MOUNTING HOLE TYPE: PLAIN
•
MOUNTING HOLE DIAMETER: 0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
•
HOLE QUANTITY: 2
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-23377,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESENDS RADIUSED 0.370 IN. MIN AND 0.400 IN. MAX IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-250/4,T3 OR T4 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL THICKNESS0.187 INCHES NOMINAL IN
OVERALL WIDTH0.530 INCHES NOMINAL IN
MOUNTING HOLE TYPEPLAIN
MOUNTING HOLE DIAMETER0.265 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
HOLE QUANTITY2
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-23377,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE
SURFACE TREATMENTPRIMER EPOXY
MATERIALALUMINUM ALLOY 2024
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
39737Interchangeable
interchangeable cross-reference
interchangeable
XM-36465-96-1500-O-LInterchangeable
interchangeable cross-reference
interchangeable
48203-1 PIECE 107Interchangeable
interchangeable cross-reference
interchangeable
47489Interchangeable
interchangeable cross-reference
interchangeable
46201-3 PIECE 107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 204-012-129-01?
204-012-129-01 is a PLATE,MENDING.
What parts can replace 204-012-129-01?
There are 5 known substitutes for 204-012-129-01: 39737, XM-36465-96-1500-O-L, 48203-1 PIECE 107 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 204-012-129-01?
204-012-129-01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-248-7135. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026