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ST3M718 — SHEAR LOCK

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

ST3M718: SHEAR LOCK.

The SHEAR LOCK is a the manufacturer industrial component. Key specifications include end_item_identification: AV-8B AIRCRAFT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-658-7202, 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
ST3M718
NSN: 5340-01-658-7202
FSC: 5340 — Hardware, Commercial
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
end_item_identificationAV-8B AIRCRAFT
NSN5340-01-658-7202
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: ST3M718 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONAV-8B AIRCRAFT
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
SC-R31-4-4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST3M718?
ST3M718 is a SHEAR LOCK.
What parts can replace ST3M718?
There is 1 known substitute for ST3M718: SC-R31-4-4. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M718?
ST3M718 is cataloged in the U.S. Government catalog under NSN 5340-01-658-7202. This indicates validated use in U.S. government and defense supply chains.
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