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812516-4 — CAP,PROTECTIVE,DUST AND MOISTURE

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

812516-4: CAP,PROTECTIVE,DUST AND MOISTURE.

CAP,PROTECTIVE,DUST AND MOISTURE. Key specifications include material: PLASTIC, POLYETHYLENE (PP), design_type: THREADED, thread_class: 1B, overall_diameter: 0.500 INCHES NOMINAL IN, inside_diameter_length: 0.850 INCHES NOMINAL IN, round_cap_outside_surface_condition: RIBBED OR SMOOTH. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-190-0797, 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
812516-4
NSN: 5340-01-190-0797
FSC: 5340 — Hardware, Commercial
CAGE: 06331 — PACIFIC SCIENTIFIC ENERGETIC MATERIALS COMPANY (CALIFORNIA LLC) (USA)
SPECIFICATIONS
materialPLASTIC, POLYETHYLENE (PP)
design_typeTHREADED
thread_class1B
overall_diameter0.500 INCHES NOMINAL IN
inside_diameter_length0.850 INCHES NOMINAL IN
round_cap_outside_surface_conditionRIBBED OR SMOOTH
material_document_and_classificationL-P-390, TYPE 1, CLASS M, GRADE 3 FED SPEC SINGLE MATERIAL RESPONSE
thread_size_and_series/type_designator0.375-24 UNF
NSN5340-01-190-0797
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 812516-4 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: 0.500 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: L-P-390, TYPE 1, CLASS M, GRADE 3 FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD CLASS: 1B
•
MATERIAL: PLASTIC, POLYETHYLENE (PP)
•
THREAD SIZE AND SERIES/TYPE DESIGNATOR: 0.375-24 UNF
•
INSIDE DIAMETER LENGTH: 0.850 INCHES NOMINAL IN
•
ROUND CAP OUTSIDE SURFACE CONDITION: RIBBED OR SMOOTH
TECHNICAL CHARACTERISTICS
DESIGN TYPETHREADED
OVERALL DIAMETER0.500 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONL-P-390, TYPE 1, CLASS M, GRADE 3 FED SPEC SINGLE MATERIAL RESPONSE
THREAD CLASS1B
MATERIALPLASTIC, POLYETHYLENE (PP)
THREAD SIZE AND SERIES/TYPE DESIGNATOR0.375-24 UNF
INSIDE DIAMETER LENGTH0.850 INCHES NOMINAL IN
ROUND CAP OUTSIDE SURFACE CONDITIONRIBBED OR SMOOTH
SUBSTITUTES & CROSS-REFERENCES 2
10501918Reference document
Same NSN cross-reference
Reference document — Informative reference only
22277-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 812516-4?
812516-4 is a CAP,PROTECTIVE,DUST AND MOISTURE.
What parts can replace 812516-4?
There are 2 known substitutes for 812516-4: 10501918, 22277-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 812516-4?
812516-4 is cataloged in the U.S. Government catalog under NSN 5340-01-190-0797. This indicates validated use in U.S. government and defense supply chains.
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