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940Y2 — BUMPER

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

940Y2: BUMPER.

The BUMPER is a the manufacturer industrial component. Key specifications include material: RUBBER SYNTHETIC, hole_depth: 0.047 INCHES NOMINAL IN, hole_diameter: 0.188 INCHES NOMINAL IN, overall_height: 0.375 INCHES NOMINAL IN, special_features: METAL WASHER INSERT FOR REINFORCEMENT, style_designator: FLAT TOP COUNTERBORED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-753-9220, 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
940Y2
NSN: 5340-00-753-9220
FSC: 5340 — Hardware, Commercial
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC
hole_depth0.047 INCHES NOMINAL IN
hole_diameter0.188 INCHES NOMINAL IN
overall_height0.375 INCHES NOMINAL IN
special_featuresMETAL WASHER INSERT FOR REINFORCEMENT
style_designatorFLAT TOP COUNTERBORED
first_counterbore_depth0.281 INCHES NOMINAL IN
second_counterbore_depth0.078 INCHES NOMINAL IN
first_counterbore_diameter0.250 INCHES NOMINAL IN
outside/top_flange_diameter0.750 INCHES NOMINAL IN
NSN5340-00-753-9220
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 940Y2 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
•
SECOND COUNTERBORE DEPTH: 0.078 INCHES NOMINAL IN
•
OUTSIDE/TOP FLANGE DIAMETER: 0.750 INCHES NOMINAL IN
•
HOLE DEPTH: 0.047 INCHES NOMINAL IN
•
FIRST COUNTERBORE DIAMETER: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: FLAT TOP COUNTERBORED
•
FIRST COUNTERBORE DEPTH: 0.281 INCHES NOMINAL IN
•
COLOR: BLACK
TECHNICAL CHARACTERISTICS
SECOND COUNTERBORE DEPTH0.078 INCHES NOMINAL IN
OVERALL HEIGHT0.375 INCHES NOMINAL IN
OUTSIDE/TOP FLANGE DIAMETER0.750 INCHES NOMINAL IN
HOLE DEPTH0.047 INCHES NOMINAL IN
FIRST COUNTERBORE DIAMETER0.250 INCHES NOMINAL IN
STYLE DESIGNATORFLAT TOP COUNTERBORED
FIRST COUNTERBORE DEPTH0.281 INCHES NOMINAL IN
COLORBLACK
SPECIAL FEATURESMETAL WASHER INSERT FOR REINFORCEMENT
MATERIALRUBBER SYNTHETIC
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 940Y2?
940Y2 is a BUMPER.
What is the NSN for 940Y2?
940Y2 is cataloged in the U.S. Government catalog under NSN 5340-00-753-9220. 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.