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417457PC1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

417457PC1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include outside_diameter: 4.000 INCHES NOMINAL IN, bolt_circle_diameter: 3.750 INCHES NOMINAL IN, peripheral_shape_style: ROUND, MULTI HOLES, end_item_identification: GUN SIGHT MK15, mounting_opening_shape_style: UNTHREADED HOLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-157-4232, 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
417457PC1
NSN: 5340-00-157-4232
FSC: 5340 — Hardware, Commercial
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
outside_diameter4.000 INCHES NOMINAL IN
bolt_circle_diameter3.750 INCHES NOMINAL IN
peripheral_shape_styleROUND, MULTI HOLES
end_item_identificationGUN SIGHT MK15
bolt_circle_hole_quantity8
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-00-157-4232
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 417457PC1 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
•
BOLT CIRCLE HOLE QUANTITY: 8
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
OUTSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
BOLT CIRCLE DIAMETER: 3.750 INCHES NOMINAL IN
•
PERIPHERAL SHAPE STYLE: ROUND, MULTI HOLES
TECHNICAL CHARACTERISTICS
BOLT CIRCLE HOLE QUANTITY8
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
OUTSIDE DIAMETER4.000 INCHES NOMINAL IN
BOLT CIRCLE DIAMETER3.750 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND, MULTI HOLES
END ITEM IDENTIFICATIONGUN SIGHT MK15
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: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 417457PC1?
417457PC1 is a COVER,ACCESS.
What is the NSN for 417457PC1?
417457PC1 is cataloged in the U.S. Government catalog under NSN 5340-00-157-4232. 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.