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PartsTable / COMPONENT / 2548-9
2548-9 ✓ 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 RELAY,THERMAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, thread_class: 3A A, overall_length: 4.843 INCHES NOMINAL IN, handle_clearance: 1.220 INCHES NOMINAL IN, special_features: NUMBER N1400-0425, surface_treatment: PASSIVATE OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-340-5996, 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
2548-9
NSN: 5340-01-340-5996
FSC: 5340
CAGE: 04729 — UNICORP. (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
thread_class3A A
overall_length4.843 INCHES NOMINAL IN
handle_clearance1.220 INCHES NOMINAL IN
special_featuresNUMBER N1400-0425
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.190 INCHES IN
end_item_identificationWINCH, HYDRAULIC
thread_series_designatorUNF
mounting_facility_quantity2
material_document_and_classificationQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyCIRCLIP ANDERTON
NSN5340-01-340-5996
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 2548-9 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
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL COMP 303 OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD SERIES DESIGNATOR: UNF
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
MOUNTING FACILITY QUANTITY: 2
•
HANDLE CLEARANCE: 1.220 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.190 INCHES IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 303 OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MOUNTING FACILITY QUANTITY2
HANDLE CLEARANCE1.220 INCHES NOMINAL IN
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH4.531 INCHES MINIMUM AND 4.593 INCHES MAXIMUM IN
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
316490Interchangeable
interchangeable cross-reference
interchangeable
31649Interchangeable
interchangeable cross-reference
interchangeable
500-53Interchangeable
interchangeable cross-reference
interchangeable
8-08436-3Interchangeable
interchangeable cross-reference
interchangeable
1834YInterchangeable
interchangeable cross-reference
interchangeable
SC-B-69235Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2548-9?
2548-9 is a RELAY,THERMAL.
What parts can replace 2548-9?
There are 14 known substitutes for 2548-9: 316490, 31649, 500-53 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2548-9?
2548-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-340-5996. 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