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6763928 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6763928: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 0.5000 INCHES NOMINAL IN, bore_diameter: 0.3440 INCHES NOMINAL IN, overall_height: 0.1250 INCHES NOMINAL IN, special_features: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-434-5502, 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
6763928
NSN: 5340-00-434-5502
FSC: 5340 — Hardware, Commercial
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter0.5000 INCHES NOMINAL IN
bore_diameter0.3440 INCHES NOMINAL IN
overall_height0.1250 INCHES NOMINAL IN
special_featuresNOT CASEHARDENED
style_designatorSEAT
first_step_diameter0.6880 INCHES NOMINAL IN
countersink_diameter0.4060 INCHES NOMINAL IN
countersink_angle_in_deg45.0
distance_from_end_to_first_step0.0520 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
NSN5340-00-434-5502
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6763928 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
•
COUNTERSINK ANGLE IN DEG: 45.0
•
FIRST STEP DIAMETER: 0.6880 INCHES NOMINAL IN
•
END DIAMETER: 0.5000 INCHES NOMINAL IN
•
COUNTERSINK DIAMETER: 0.4060 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.0520 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.1250 INCHES NOMINAL IN
COUNTERSINK ANGLE IN DEG45.0
FIRST STEP DIAMETER0.6880 INCHES NOMINAL IN
END DIAMETER0.5000 INCHES NOMINAL IN
COUNTERSINK DIAMETER0.4060 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.0520 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
SPECIAL FEATURESNOT CASEHARDENED
BORE DIAMETER0.3440 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6763928?
6763928 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 6763928?
6763928 is cataloged in the U.S. Government catalog under NSN 5340-00-434-5502. 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.