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91748174 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

91748174: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: STEEL, design_type: THREADED, thread_class: 2A A, overall_diameter: 1.000 INCHES NOMINAL IN, special_features: FURNISHED W/GASKET,USED FOR @FREON @12 AND 22, round_cap_outside_surface_condition: KNURLED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-613-9866, 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
91748174
NSN: 5340-00-613-9866
FSC: 5340 — Hardware, Commercial
CAGE: F6481 — THALES SA (FRA)
SPECIFICATIONS
materialSTEEL
design_typeTHREADED
thread_class2A A
overall_diameter1.000 INCHES NOMINAL IN
special_featuresFURNISHED W/GASKET,USED FOR @FREON @12 AND 22
round_cap_outside_surface_conditionKNURLED
thread_size_and_series/type_designator1.000-20 UNEF
NSN5340-00-613-9866
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 91748174 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: 1.000 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
MATERIAL: STEEL
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1.000-20 UNEF
•
ROUND CAP OUTSIDE SURFACE CONDITION: KNURLED
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
OVERALL DIAMETER1.000 INCHES NOMINAL IN
SPECIAL FEATURESFURNISHED W/GASKET,USED FOR @FREON @12 AND 22
THREAD CLASS2A A
MATERIALSTEEL
THREAD SIZE AND SERIES/TYPE DESIGNATOR1.000-20 UNEF
ROUND CAP OUTSIDE SURFACE CONDITIONKNURLED
SUBSTITUTES & CROSS-REFERENCES 6
578-9200-1572633REVDPC52Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
588-516-1854511REVAPC52Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
585-516-1714598REVAPC52Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
7891-051REVDPC52Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
586-516-1720482REVAPC52Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
91719957Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 91748174?
91748174 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 91748174?
There are 6 known substitutes for 91748174: 578-9200-1572633REVDPC52, 588-516-1854511REVAPC52, 585-516-1714598REVAPC52 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91748174?
91748174 is cataloged in the U.S. Government catalog under NSN 5340-00-613-9866. 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.