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546843 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

546843: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY, hole_diameter: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN, body_thickness: 0.120 INCHES NOMINAL IN, inside_diameter: 1.308 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN, securing_device_type: SPECIAL, first_recess_inside_height: 0.360 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-918-8942, 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
546843
NSN: 5340-00-918-8942
FSC: 5340 — Hardware, Commercial
CAGE: 45934 — ONTIC ENGINEERING & MANUFACTURING, INC DBA ONTIC US (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
hole_diameter0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
body_thickness0.120 INCHES NOMINAL IN
inside_diameter1.308 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
securing_device_typeSPECIAL
first_recess_inside_height0.360 INCHES NOMINAL IN
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-00-918-8942
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 546843 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
•
FIRST RECESS INSIDE HEIGHT: 0.360 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
SECURING DEVICE TYPE: SPECIAL
•
INSIDE DIAMETER: 1.308 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
•
MATERIAL: ALUMINUM ALLOY
•
HOLE DIAMETER: 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
•
BODY THICKNESS: 0.120 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
FIRST RECESS INSIDE HEIGHT0.360 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
SECURING DEVICE TYPESPECIAL
INSIDE DIAMETER1.308 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
MATERIALALUMINUM ALLOY
HOLE DIAMETER0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN
BODY THICKNESS0.120 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 546843?
546843 is a COVER,ACCESS.
What is the NSN for 546843?
546843 is cataloged in the U.S. Government catalog under NSN 5340-00-918-8942. 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.