PartsTable
Technical Data Sheet
Download PDF

1285686-103 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

1285686-103: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: ALUMINUM ALLOY, special_features: FOUR HOLES ON BASE,0.124 IN. MIN,0.129 IN.

MAX DIA,EQUALLY SPACE ON A 1.250 IN. DIA IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-307-0510, 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
1285686-103
NSN: 5340-00-307-0510
FSC: 5340 — Hardware, Commercial
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
special_featuresFOUR HOLES ON BASE,0.124 IN. MIN,0.129 IN. MAX DIA,EQUALLY SPACE ON A 1.250 IN. DIA IN
style_designatorSEAT
NSN5340-00-307-0510
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 1285686-103 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
•
STYLE DESIGNATOR: SEAT
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSEAT
SPECIAL FEATURESFOUR HOLES ON BASE,0.124 IN. MIN,0.129 IN. MAX DIA,EQUALLY SPACE ON A 1.250 IN. DIA IN
MATERIALALUMINUM ALLOY
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
1285686Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation
Ready to buy 1285686-103?
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 1285686-103?
1285686-103 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 1285686-103?
There is 1 known substitute for 1285686-103: 1285686. Substitute compatibility should be verified for your specific system.
What is the NSN for 1285686-103?
1285686-103 is cataloged in the U.S. Government catalog under NSN 5340-00-307-0510. 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 — 1285686-103

✓ 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.