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6800193-171 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6800193-171: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: THREADED, thread_class: 1A A, overall_diameter: 0.688 INCHES NOMINAL IN, inside_diameter_length: 0.438 INCHES NOMINAL IN, thread_size_and_series/type_designator: 0.250-28 UNEF. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-855-1268, 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
6800193-171
NSN: 5340-00-855-1268
FSC: 5340 — Hardware, Commercial
CAGE: 63005 — ROLLS-ROYCE CORPORATION (USA)
SPECIFICATIONS
materialPLASTIC
design_typeTHREADED
thread_class1A A
overall_diameter0.688 INCHES NOMINAL IN
inside_diameter_length0.438 INCHES NOMINAL IN
thread_size_and_series/type_designator0.250-28 UNEF
NSN5340-00-855-1268
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6800193-171 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
•
DESIGN TYPE: THREADED
•
OVERALL DIAMETER: 0.688 INCHES NOMINAL IN
•
THREAD CLASS: 1A A
•
MATERIAL: PLASTIC
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.250-28 UNEF
•
INSIDE DIAMETER LENGTH: 0.438 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
OVERALL DIAMETER0.688 INCHES NOMINAL IN
THREAD CLASS1A A
MATERIALPLASTIC
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.250-28 UNEF
INSIDE DIAMETER LENGTH0.438 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
1604-171YReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6800193-171?
6800193-171 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 6800193-171?
There is 1 known substitute for 6800193-171: 1604-171Y. Substitute compatibility should be verified for your specific system.
What is the NSN for 6800193-171?
6800193-171 is cataloged in the U.S. Government catalog under NSN 5340-00-855-1268. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.