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556-6408040-19 — STOP,MECHANICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

556-6408040-19: STOP,MECHANICAL.

The STOP,MECHANICAL is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, design_type: STRAIGHT, overall_width: 1.914 INCHES MINIMUM AND 1.920 INCHES MAXIMUM IN, overall_height: 0.390 INCHES NOMINAL IN, overall_length: 2.750 INCHES NOMINAL IN, material_document_and_classification: QQ-S-763, CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-352-6433, 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
556-6408040-19
NSN: 5340-01-352-6433
FSC: 5340 — Hardware, Commercial
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 304
design_typeSTRAIGHT
overall_width1.914 INCHES MINIMUM AND 1.920 INCHES MAXIMUM IN
overall_height0.390 INCHES NOMINAL IN
overall_length2.750 INCHES NOMINAL IN
material_document_and_classificationQQ-S-763, CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-352-6433
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 556-6408040-19 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
•
DESIGN TYPE: STRAIGHT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-763, CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE
•
MATERIAL: STEEL COMP 304
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.390 INCHES NOMINAL IN
DESIGN TYPESTRAIGHT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-763, CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE
OVERALL LENGTH2.750 INCHES NOMINAL IN
OVERALL WIDTH1.914 INCHES MINIMUM AND 1.920 INCHES MAXIMUM IN
MATERIALSTEEL COMP 304
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
211047687Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 556-6408040-19?
556-6408040-19 is a STOP,MECHANICAL.
What parts can replace 556-6408040-19?
There is 1 known substitute for 556-6408040-19: 211047687. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-6408040-19?
556-6408040-19 is cataloged in the U.S. Government catalog under NSN 5340-01-352-6433. This indicates validated use in U.S. government and defense supply chains.
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