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7N2057 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7N2057: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1117 OR STEEL COMP 1118, body_radius: 15.1 MILLIMETERS NOMINAL MM, hole_diameter: 7.04 MILLIMETERS MINIMUM AND 7.44 MILLIMETERS MAXIMUM MM, body_thickness: 4.75 MILLIMETERS NOMINAL MM, cross-sectional_shape_style: FLAT, mounting_opening_shape_style: UNTHREADED HOLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-150-5997, 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
7N2057
NSN: 5340-01-150-5997
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 1117 OR STEEL COMP 1118
body_radius15.1 MILLIMETERS NOMINAL MM
hole_diameter7.04 MILLIMETERS MINIMUM AND 7.44 MILLIMETERS MAXIMUM MM
body_thickness4.75 MILLIMETERS NOMINAL MM
cross-sectional_shape_styleFLAT
mounting_opening_shape_styleUNTHREADED HOLE
distance_between_holes_along_width34.30 MILLIMETERS NOMINAL MM
distance_between_holes_along_length28.59 MILLIMETERS NOMINAL MM
material_document_and_classification1E353 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
NSN5340-01-150-5997
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7N2057 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
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 28.59 MILLIMETERS NOMINAL MM
•
DISTANCE BETWEEN HOLES ALONG WIDTH: 34.30 MILLIMETERS NOMINAL MM
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
MATERIAL DOCUMENT AND CLASSIFICATION: 1E353 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
BODY RADIUS: 15.1 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL COMP 1117 OR STEEL COMP 1118
•
HOLE DIAMETER: 7.04 MILLIMETERS MINIMUM AND 7.44 MILLIMETERS MAXIMUM MM
TECHNICAL CHARACTERISTICS
DISTANCE BETWEEN HOLES ALONG LENGTH28.59 MILLIMETERS NOMINAL MM
DISTANCE BETWEEN HOLES ALONG WIDTH34.30 MILLIMETERS NOMINAL MM
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
MATERIAL DOCUMENT AND CLASSIFICATION1E353 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEFLAT
BODY RADIUS15.1 MILLIMETERS NOMINAL MM
MATERIALSTEEL COMP 1117 OR STEEL COMP 1118
HOLE DIAMETER7.04 MILLIMETERS MINIMUM AND 7.44 MILLIMETERS MAXIMUM MM
BODY THICKNESS4.75 MILLIMETERS NOMINAL MM
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 7N2057?
7N2057 is a COVER,ACCESS.
What is the NSN for 7N2057?
7N2057 is cataloged in the U.S. Government catalog under NSN 5340-01-150-5997. 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.