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3384040 — CLAMP,SYNCHRO

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

3384040: CLAMP,SYNCHRO.

The CLAMP,SYNCHRO is a the manufacturer industrial component. Key specifications include width: 0.313 INCHES NOMINAL IN, height: 0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN, length: 0.375 INCHES NOMINAL IN, material: STEEL COMP 416, hole_diameter: 0.171 INCHES NOMINAL IN, furnished_items: LOCKNUT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-004-4377, 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
3384040
NSN: 5340-01-004-4377
FSC: 5340 — Hardware, Commercial
CAGE: 07421 — L3HARRIS INTERSTATE ELECTRONICS CORPORATION (USA)
SPECIFICATIONS
width0.313 INCHES NOMINAL IN
height0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
length0.375 INCHES NOMINAL IN
materialSTEEL COMP 416
hole_diameter0.171 INCHES NOMINAL IN
furnished_itemsLOCKNUT
surface_treatmentPASSIVATE
material_document_and_classificationASTM A582 ASSN STD SINGLE MATERIAL RESPONSE
NSN5340-01-004-4377
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 3384040 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
•
LENGTH: 0.375 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE
•
HEIGHT: 0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE
•
WIDTH: 0.313 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 416
•
FURNISHED ITEMS: LOCKNUT
•
HOLE DIAMETER: 0.171 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH0.375 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE
HEIGHT0.258 INCHES MINIMUM AND 0.263 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE
WIDTH0.313 INCHES NOMINAL IN
MATERIALSTEEL COMP 416
FURNISHED ITEMSLOCKNUT
HOLE DIAMETER0.171 INCHES NOMINAL IN
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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3384040?
3384040 is a CLAMP,SYNCHRO.
What is the NSN for 3384040?
3384040 is cataloged in the U.S. Government catalog under NSN 5340-01-004-4377. 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.