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855573 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

855573: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 1.125 INCHES NOMINAL IN, length: 3.500 INCHES NOMINAL IN, material: ZINC ALLOY, hole_diameter: 0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN, flange_thickness: 0.125 INCHES NOMINAL IN, surface_treatment: DICHROMATE ZINC AND ZINC. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-358-4532, 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
855573
NSN: 5340-00-358-4532
FSC: 5340 — Hardware, Commercial
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
width1.125 INCHES NOMINAL IN
length3.500 INCHES NOMINAL IN
materialZINC ALLOY
hole_diameter0.195 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN
flange_thickness0.125 INCHES NOMINAL IN
surface_treatmentDICHROMATE ZINC AND ZINC
securing_device_typeTHREADED FASTENER
bolt_circle_hole_quantity3
mounting_opening_shape_styleUNTHREADED HOLE
distance_between_holes_along_width0.688 INCHES NOMINAL IN
material_document_and_classification8-G-4128M OR 10-G-4129M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE
distance_between_hole_centerline_and_first_hole_along_width2.875 INCHES NOMINAL IN
NSN5340-00-358-4532
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 855573 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
•
LENGTH: 3.500 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.125 INCHES NOMINAL IN
•
BOLT CIRCLE HOLE QUANTITY: 3
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 0.688 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: 8-G-4128M OR 10-G-4129M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE
•
SECURING DEVICE TYPE: THREADED FASTENER
•
DISTANCE BETWEEN HOLE CENTERLINE AND FIRST HOLE ALONG WIDTH: 2.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH3.500 INCHES NOMINAL IN
FLANGE THICKNESS0.125 INCHES NOMINAL IN
BOLT CIRCLE HOLE QUANTITY3
DISTANCE BETWEEN HOLES ALONG WIDTH0.688 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATION8-G-4128M OR 10-G-4129M,FSCM 24617 MFR REF SINGLE MATERIAL RESPONSE
SECURING DEVICE TYPETHREADED FASTENER
DISTANCE BETWEEN HOLE CENTERLINE AND FIRST HOLE ALONG WIDTH2.875 INCHES NOMINAL IN
SURFACE TREATMENTDICHROMATE ZINC AND ZINC
WIDTH1.125 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 4
71359Reference document
Same NSN cross-reference
Reference document — Secondary reference
7410179Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
A1475Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
121561Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 855573?
855573 is a COVER,ACCESS.
What parts can replace 855573?
There are 4 known substitutes for 855573: 71359, 7410179, A1475 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 855573?
855573 is cataloged in the U.S. Government catalog under NSN 5340-00-358-4532. 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.