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US-DS1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

US-DS1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 1.000 INCHES NOMINAL IN, length: 1.300 INCHES NOMINAL IN, material: STEEL COMP 1020, hole_diameter: 0.310 INCHES NOMINAL IN, body_thickness: 0.120 INCHES NOMINAL IN, surface_treatment: CADMIUM OR ZINC. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-328-1743, 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
US-DS1
NSN: 5340-01-328-1743
FSC: 5340 — Hardware, Commercial
CAGE: 53790 — STAUFF CORP (USA)
SPECIFICATIONS
width1.000 INCHES NOMINAL IN
length1.300 INCHES NOMINAL IN
materialSTEEL COMP 1020
hole_diameter0.310 INCHES NOMINAL IN
body_thickness0.120 INCHES NOMINAL IN
surface_treatmentCADMIUM OR ZINC
securing_device_typeSPECIAL
peripheral_shape_styleRECTANGLE, ONE CENTER HOLE
cross-sectional_shape_styleFLAT
mounting_opening_shape_styleUNTHREADED HOLE
distance_from_first_hole_centerline_to_end_along_width0.500 INCHES NOMINAL IN
distance_from_first_hole_centerline_to_end_along_length0.530 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
NSN5340-01-328-1743
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: US-DS1 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 FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH: 0.500 INCHES NOMINAL IN
•
LENGTH: 1.300 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
•
CROSS-SECTIONAL SHAPE STYLE: FLAT
•
SECURING DEVICE TYPE: SPECIAL
•
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH: 0.530 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OR ZINC
•
PERIPHERAL SHAPE STYLE: RECTANGLE, ONE CENTER HOLE
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.500 INCHES NOMINAL IN
LENGTH1.300 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLEFLAT
SECURING DEVICE TYPESPECIAL
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG LENGTH0.530 INCHES MINIMUM AND 0.770 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OR ZINC
PERIPHERAL SHAPE STYLERECTANGLE, ONE CENTER HOLE
WIDTH1.000 INCHES NOMINAL IN
MATERIALSTEEL COMP 1020
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 1
SW27981-1Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 US-DS1?
US-DS1 is a COVER,ACCESS.
What parts can replace US-DS1?
There is 1 known substitute for US-DS1: SW27981-1. Substitute compatibility should be verified for your specific system.
What is the NSN for US-DS1?
US-DS1 is cataloged in the U.S. Government catalog under NSN 5340-01-328-1743. 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.