PartsTable
Technical Data Sheet
Download PDF

8J6303 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

8J6303: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL, overall_height: 2.120 INCHES NOMINAL IN, flange_thickness: 0.060 INCHES NOMINAL IN, style_designator: PARALLEL, end_hole_diameter: 0.625 INCHES NOMINAL IN, body_outside_diameter: 0.820 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-094-4667, 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
8J6303
NSN: 5340-01-094-4667
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
overall_height2.120 INCHES NOMINAL IN
flange_thickness0.060 INCHES NOMINAL IN
style_designatorPARALLEL
end_hole_diameter0.625 INCHES NOMINAL IN
body_outside_diameter0.820 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating85.0 ROCKWELL 15N MINIMUM
NSN5340-01-094-4667
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 8J6303 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
•
MATERIAL HARDNESS RATING: 85.0 ROCKWELL 15N MINIMUM
•
FLANGE THICKNESS: 0.060 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 0.820 INCHES NOMINAL IN
•
STYLE DESIGNATOR: PARALLEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: STEEL
•
END HOLE DIAMETER: 0.625 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT2.120 INCHES NOMINAL IN
MATERIAL HARDNESS RATING85.0 ROCKWELL 15N MINIMUM
FLANGE THICKNESS0.060 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER0.820 INCHES NOMINAL IN
STYLE DESIGNATORPARALLEL
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALSTEEL
END HOLE DIAMETER0.625 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
Ready to buy 8J6303?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 8J6303?
8J6303 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for 8J6303?
8J6303 is cataloged in the U.S. Government catalog under NSN 5340-01-094-4667. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 8J6303

✓ 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.