PartsTable
Technical Data Sheet
Download PDF

6539785-1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6539785-1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.125 INCHES NOMINAL IN, length: 3.000 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061, inside_width: 1.125 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN, body_thickness: 0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN, inside_corner_radius: 0.060 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-369-5529, 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
6539785-1
NSN: 5340-01-369-5529
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
width4.125 INCHES NOMINAL IN
length3.000 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061
inside_width1.125 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
body_thickness0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
inside_corner_radius0.060 INCHES NOMINAL IN
peripheral_shape_styleRECTANGLE, MULTI HOLES
hole_quantity_along_width4
first_recess_inside_height0.125 INCHES NOMINAL IN
cross-sectional_shape_styleOBLONG RECESS
mounting_opening_shape_styleUNTHREADED HOLE
distance_between_holes_along_width1.312 INCHES NOMINAL IN
NSN5340-01-369-5529
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6539785-1 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
•
INSIDE WIDTH: 1.125 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
•
LENGTH: 3.000 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 2.625 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 0.060 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.125 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 1.312 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: OBLONG RECESS
TECHNICAL CHARACTERISTICS
INSIDE WIDTH1.125 INCHES MINIMUM AND 1.187 INCHES MAXIMUM IN
LENGTH3.000 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH2.625 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.060 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.125 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG WIDTH1.312 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLEOBLONG RECESS
HOLE QUANTITY ALONG WIDTH4
PERIPHERAL SHAPE STYLERECTANGLE, MULTI HOLES
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
Ready to buy 6539785-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 6539785-1?
6539785-1 is a COVER,ACCESS.
What is the NSN for 6539785-1?
6539785-1 is cataloged in the U.S. Government catalog under NSN 5340-01-369-5529. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 6539785-1

✓ 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.