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MBEU-66706 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

MBEU-66706: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: ALUMINUM ALLOY 7075, design_type: SOLID, end_diameter: 0.3700 INCHES NOMINAL IN, overall_height: 0.1350 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN, special_features: NOT CASEHARDENED, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-125-8968, 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
MBEU-66706
NSN: 5340-01-125-8968
FSC: 5340 — Hardware, Commercial
CAGE: U1604 — MARTIN-BAKER AIRCRAFT COMPANY LIMITED (GBR)
SPECIFICATIONS
materialALUMINUM ALLOY 7075
design_typeSOLID
end_diameter0.3700 INCHES NOMINAL IN
overall_height0.1350 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN
special_featuresNOT CASEHARDENED
style_designatorSEAT
counterbore_length0.1050 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM IN
counterbore_diameter0.3350 INCHES NOMINAL IN
material_document_and_classificationQQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-125-8968
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: MBEU-66706 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
•
END DIAMETER: 0.3700 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE
•
COUNTERBORE LENGTH: 0.1050 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM IN
•
COUNTERBORE DIAMETER: 0.3350 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1350 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN
END DIAMETER0.3700 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE
COUNTERBORE LENGTH0.1050 INCHES MINIMUM AND 0.1100 INCHES MAXIMUM IN
COUNTERBORE DIAMETER0.3350 INCHES NOMINAL IN
SPECIAL FEATURESNOT CASEHARDENED
MATERIALALUMINUM ALLOY 7075
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 MBEU-66706?
MBEU-66706 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for MBEU-66706?
MBEU-66706 is cataloged in the U.S. Government catalog under NSN 5340-01-125-8968. 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.