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PartsTable / COMPONENT / D7171A
D7171A ✓ 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 CLAMP,SYNCHRO is a the manufacturer industrial component. Key specifications include width: 2.562 INCHES NOMINAL IN, height: 1.938 INCHES NOMINAL IN, length: 2.812 INCHES NOMINAL IN, material: IRON, furnished_items: LOCKNUT, special_features: 0.812 IN. BY 1.340 IN.

MOUNTING HOLE IN. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-161-1207, 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
D7171A
NSN: 5340-00-161-1207
FSC: 5340
CAGE: 72540 — DAYTON-WALTHER CORP (USA)
SPECIFICATIONS
width2.562 INCHES NOMINAL IN
height1.938 INCHES NOMINAL IN
length2.812 INCHES NOMINAL IN
materialIRON
furnished_itemsLOCKNUT
special_features0.812 IN. BY 1.340 IN. MOUNTING HOLE IN
surface_treatmentCADMIUM
material_document_and_classificationMIL-I-11444,CLASS 1 OR 2 MIL SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationQQ-P-416,TYPE 1,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE
NSN5340-00-161-1207
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: D7171A 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: CADMIUM
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 1,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE
•
LENGTH: 2.812 INCHES NOMINAL IN
•
HEIGHT: 1.938 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-I-11444,CLASS 1 OR 2 MIL SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: IRON
•
FURNISHED ITEMS: LOCKNUT
•
WIDTH: 2.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 1,CLASS 1 FED SPEC SINGLE TREATMENT RESPONSE
LENGTH2.812 INCHES NOMINAL IN
HEIGHT1.938 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-I-11444,CLASS 1 OR 2 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALIRON
FURNISHED ITEMSLOCKNUT
WIDTH2.562 INCHES NOMINAL IN
SPECIAL FEATURES0.812 IN. BY 1.340 IN. MOUNTING HOLE IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
8818Upgraded Successor
successor cross-reference
successor
X54-15Interchangeable
interchangeable cross-reference
interchangeable
50032-1Interchangeable
interchangeable cross-reference
interchangeable
76851Interchangeable
interchangeable cross-reference
interchangeable
910843-44Interchangeable
interchangeable cross-reference
interchangeable
R1448-3016Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D7171A?
D7171A is a CLAMP,SYNCHRO.
What parts can replace D7171A?
There are 15 known substitutes for D7171A: 8818, X54-15, 50032-1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D7171A?
D7171A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-161-1207. 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