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1604-220Y — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1604-220Y: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: THREADED, overall_diameter: 0.875 INCHES NOMINAL IN, inside_diameter_length: 0.813 INCHES NOMINAL IN, round_cap_outside_surface_condition: RIBBED, thread_size_and_series/type_designator: 3/4 IN.-16 UN IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-660-1570, 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
1604-220Y
NSN: 5340-00-660-1570
FSC: 5340 — Hardware, Commercial
CAGE: 97945 — PENNWALT CORP S S WHITE INDUSTRIAL PRODUCTS DIV (USA)
SPECIFICATIONS
materialPLASTIC
design_typeTHREADED
overall_diameter0.875 INCHES NOMINAL IN
inside_diameter_length0.813 INCHES NOMINAL IN
round_cap_outside_surface_conditionRIBBED
thread_size_and_series/type_designator3/4 IN.-16 UN IN
NSN5340-00-660-1570
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1604-220Y 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: 0.875 INCHES NOMINAL IN
•
MATERIAL: PLASTIC
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 3/4 IN.-16 UN IN
•
INSIDE DIAMETER LENGTH: 0.813 INCHES NOMINAL IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: RIBBED
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
OVERALL DIAMETER0.875 INCHES NOMINAL IN
MATERIALPLASTIC
THREAD SIZE AND SERIES/TYPE DESIGNATOR3/4 IN.-16 UN IN
INSIDE DIAMETER LENGTH0.813 INCHES NOMINAL IN
ROUND CAP OUTSIDE SURFACE CONDITIONRIBBED
SUBSTITUTES & CROSS-REFERENCES 2
1604-220Reference document
Same NSN cross-reference
Reference document — Secondary reference
MST-220 YELLOWReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1604-220Y?
1604-220Y is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 1604-220Y?
There are 2 known substitutes for 1604-220Y: 1604-220, MST-220 YELLOW. Substitute compatibility should be verified for your specific system.
What is the NSN for 1604-220Y?
1604-220Y is cataloged in the U.S. Government catalog under NSN 5340-00-660-1570. 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.