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A31992 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A31992: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, design_type: THREADED, thread_class: 2B, overall_diameter: 0.560 INCHES NOMINAL IN, special_features: INCLUDES ATTACHED KEEPER STRAP; CAP NOMINAL LENGTH IS 0.730 INCHES; INCLUDES NEOPRENE GASKET IN, end_item_identification: END ITEM NSN: 4120-01-543-0741; BSES. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-562-0665, 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
A31992
NSN: 5340-01-562-0665
FSC: 5340 — Hardware, Commercial
CAGE: 2U435 — DELA TECHNOLOGY CORPORATION DBA DELA TECHNOLOGY CORP (USA)
SPECIFICATIONS
materialPLASTIC
design_typeTHREADED
thread_class2B
overall_diameter0.560 INCHES NOMINAL IN
special_featuresINCLUDES ATTACHED KEEPER STRAP; CAP NOMINAL LENGTH IS 0.730 INCHES; INCLUDES NEOPRENE GASKET IN
end_item_identificationEND ITEM NSN: 4120-01-543-0741; BSES
thread_size_and_series/type_designator7/16-20 UNF
part_name_assigned_by_controlling_agencyCAP AND KEEPER
NSN5340-01-562-0665
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A31992 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: 0.560 INCHES NOMINAL IN
•
THREAD CLASS: 2B
•
MATERIAL: PLASTIC
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 7/16-20 UNF
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
OVERALL DIAMETER0.560 INCHES NOMINAL IN
SPECIAL FEATURESINCLUDES ATTACHED KEEPER STRAP; CAP NOMINAL LENGTH IS 0.730 INCHES; INCLUDES NEOPRENE GASKET IN
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP AND KEEPER
THREAD CLASS2B
END ITEM IDENTIFICATIONEND ITEM NSN: 4120-01-543-0741; BSES
MATERIALPLASTIC
THREAD SIZE AND SERIES/TYPE DESIGNATOR7/16-20 UNF
SUBSTITUTES & CROSS-REFERENCES 1
9842444Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 A31992?
A31992 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace A31992?
There is 1 known substitute for A31992: 9842444. Substitute compatibility should be verified for your specific system.
What is the NSN for A31992?
A31992 is cataloged in the U.S. Government catalog under NSN 5340-01-562-0665. 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.