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187294R1 — COVER,ACCESS

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

187294R1: COVER,ACCESS.

The COVER,ACCESS is a the manufacturer industrial component. Key specifications include width: 4.187 INCHES NOMINAL IN, length: 4.500 INCHES NOMINAL IN, material: IRON CAST, inside_width: 3.187 INCHES NOMINAL IN, corner_radius: 0.375 INCHES NOMINAL IN, hole_diameter: 0.406 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-308-6043, 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
187294R1
NSN: 5340-00-308-6043
FSC: 5340 — Hardware, Commercial
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
width4.187 INCHES NOMINAL IN
length4.500 INCHES NOMINAL IN
materialIRON CAST
inside_width3.187 INCHES NOMINAL IN
corner_radius0.375 INCHES NOMINAL IN
hole_diameter0.406 INCHES NOMINAL IN
inside_length3.500 INCHES NOMINAL IN
body_thickness0.187 INCHES NOMINAL IN
flange_thickness0.250 INCHES NOMINAL IN
special_featuresTHD HOLE FOR LUBRICATION FITTING
bolt_circle_diameter5.081 INCHES NOMINAL IN
inside_corner_radius0.156 INCHES NOMINAL IN
NSN5340-00-308-6043
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 187294R1 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: 3.187 INCHES NOMINAL IN
•
CORNER RADIUS: 0.375 INCHES NOMINAL IN
•
LENGTH: 4.500 INCHES NOMINAL IN
•
INSIDE LENGTH: 3.500 INCHES NOMINAL IN
•
FLANGE THICKNESS: 0.250 INCHES NOMINAL IN
•
INSIDE CORNER RADIUS: 0.156 INCHES NOMINAL IN
•
FIRST RECESS INSIDE HEIGHT: 0.125 INCHES NOMINAL IN
•
MOUNTING OPENING SHAPE STYLE: UNTHREADED HOLE
TECHNICAL CHARACTERISTICS
INSIDE WIDTH3.187 INCHES NOMINAL IN
CORNER RADIUS0.375 INCHES NOMINAL IN
LENGTH4.500 INCHES NOMINAL IN
INSIDE LENGTH3.500 INCHES NOMINAL IN
FLANGE THICKNESS0.250 INCHES NOMINAL IN
INSIDE CORNER RADIUS0.156 INCHES NOMINAL IN
FIRST RECESS INSIDE HEIGHT0.125 INCHES NOMINAL IN
MOUNTING OPENING SHAPE STYLEUNTHREADED HOLE
CROSS-SECTIONAL SHAPE STYLESQUARE OR RECTANGULAR RECESS
SECURING DEVICE TYPETHREADED FASTENER
SUBSTITUTES & CROSS-REFERENCES 1
73239Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 187294R1?
187294R1 is a COVER,ACCESS.
What parts can replace 187294R1?
There is 1 known substitute for 187294R1: 73239. Substitute compatibility should be verified for your specific system.
What is the NSN for 187294R1?
187294R1 is cataloged in the U.S. Government catalog under NSN 5340-00-308-6043. This indicates validated use in U.S. government and defense supply chains.
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