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128WM10042-13 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

128WM10042-13: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 5.374 INCHES NOMINAL IN, length: 5.874 INCHES NOMINAL IN, material: ALUMINUM ALLOY 7075, inside_width: 3.240 INCHES NOMINAL IN, hole_diameter: 0.057 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN, inside_length: 3.740 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-266-1087, 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
128WM10042-13
NSN: 5340-01-266-1087
FSC: 5340 — Hardware, Commercial
CAGE: 1S693 — ALJO PRECISION PRODUCTS, INC. (USA)
SPECIFICATIONS
width5.374 INCHES NOMINAL IN
length5.874 INCHES NOMINAL IN
materialALUMINUM ALLOY 7075
inside_width3.240 INCHES NOMINAL IN
hole_diameter0.057 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN
inside_length3.740 INCHES NOMINAL IN
flange_thickness1.067 INCHES NOMINAL IN
surface_treatmentPRIMER ZINC CHROMATE
securing_device_typeSPECIAL
first_recess_inside_height0.060 INCHES NOMINAL IN
cross-sectional_shape_styleRECESS, OTHER THAN ROUND
mounting_opening_shape_styleUNTHREADED HOLE
NSN5340-01-266-1087
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 128WM10042-13 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: 0.469 INCHES NOMINAL IN
•
INSIDE WIDTH: 3.240 INCHES NOMINAL IN
•
LENGTH: 5.874 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: GSS9.010,GRUMMAN AIRCRAFT MFR REF SINGLE TREATMENT RESPONSE
•
INSIDE LENGTH: 3.740 INCHES NOMINAL IN
•
DISTANCE BETWEEN HOLES ALONG LENGTH: 0.914 INCHES NOMINAL IN
•
FLANGE THICKNESS: 1.067 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.060 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM FIRST HOLE CENTERLINE TO END ALONG WIDTH0.469 INCHES NOMINAL IN
INSIDE WIDTH3.240 INCHES NOMINAL IN
LENGTH5.874 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONGSS9.010,GRUMMAN AIRCRAFT MFR REF SINGLE TREATMENT RESPONSE
INSIDE LENGTH3.740 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG LENGTH0.914 INCHES NOMINAL IN
FLANGE THICKNESS1.067 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.060 INCHES NOMINAL IN
DISTANCE BETWEEN HOLES ALONG WIDTH1.466 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
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)Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 128WM10042-13?
128WM10042-13 is a COVER,ACCESS.
What is the NSN for 128WM10042-13?
128WM10042-13 is cataloged in the U.S. Government catalog under NSN 5340-01-266-1087. 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.