PartsTable
Technical Data Sheet
NAS835-20 ✓ 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

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: ALUMINUM ALLOY, design_type: THREADED, thread_class: 2B, round_cap_outside_surface_condition: RIBBED, material_document_and_classification: L-P-390, TYPE 1, CLASS L, GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE, thread_size_and_series/type_designator: 1-5/8-12 UN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-298-3015, 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
NAS835-20
NSN: 5340-01-298-3015
FSC: 5340
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
design_typeTHREADED
thread_class2B
round_cap_outside_surface_conditionRIBBED
material_document_and_classificationL-P-390, TYPE 1, CLASS L, GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator1-5/8-12 UN
tube_outside_diameter_for_which_designed1.250 INCHES NOMINAL IN
NSN5340-01-298-3015
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: NAS835-20 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
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-390, TYPE 1, CLASS L, GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
THREAD CLASS: 2B
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 1.250 INCHES NOMINAL IN
MATERIAL: ALUMINUM ALLOY
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 1-5/8-12 UN
ROUND CAP OUTSIDE SURFACE CONDITION: RIBBED
TECHNICAL CHARACTERISTICS (FLIS)
DESIGN TYPETHREADED
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-390, TYPE 1, CLASS L, GRADE 2 FED SPEC SINGLE MATERIAL RESPONSE
THREAD CLASS2B
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED1.250 INCHES NOMINAL IN
MATERIALALUMINUM ALLOY
THREAD SIZE AND SERIES/TYPE DESIGNATOR1-5/8-12 UN
ROUND CAP OUTSIDE SURFACE CONDITIONRIBBED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
M5501/3-R10Upgraded Successor
successor cross-reference
successor
MILC5501Upgraded Successor
successor cross-reference
successor
S8625-7-8-14Upgraded Successor
successor cross-reference
successor
6-16Upgraded Successor
successor cross-reference
successor
5340PL1450718Upgraded Successor
successor cross-reference
successor
118170Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is NAS835-20?
NAS835-20 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace NAS835-20?
There are 23 known substitutes for NAS835-20: M5501/3-R10, MILC5501, S8625-7-8-14 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for NAS835-20?
NAS835-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-01-298-3015. This indicates validated use in U.S. government and defense supply chains.
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