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107306R2 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

107306R2: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL COMP 1010, design_type: SOLID, end_diameter: 0.8000 INCHES NOMINAL IN, bore_diameter: 0.7100 INCHES NOMINAL IN, overall_height: 0.4677 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-386-3621, 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
107306R2
NSN: 5340-00-386-3621
FSC: 5340 — Hardware, Commercial
CAGE: 92679 — NAVISTAR INTL CORP MELROSE PARK ENGINE PLANT LOCATION /MELROSE PARK/ (USA)
SPECIFICATIONS
materialSTEEL COMP 1010
design_typeSOLID
end_diameter0.8000 INCHES NOMINAL IN
bore_diameter0.7100 INCHES NOMINAL IN
overall_height0.4677 INCHES NOMINAL IN
style_designatorSEAT
features_providedCASEHARDENED
counterbore_length0.3420 INCHES NOMINAL IN
first_step_diameter0.9000 INCHES NOMINAL IN
counterbore_diameter0.7344 INCHES NOMINAL IN
fsc_application_dataGASOLINE ENGINE,EXCEPT AIRCRAFT PRIME MOVER TYPE
second_step_diameter1.1870 INCHES NOMINAL IN
NSN5340-00-386-3621
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 107306R2 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
•
FSC APPLICATION DATA: GASOLINE ENGINE,EXCEPT AIRCRAFT PRIME MOVER TYPE
•
FIRST STEP DIAMETER: 0.9000 INCHES NOMINAL IN
•
END DIAMETER: 0.8000 INCHES NOMINAL IN
•
DISTANCE FROM END TO FIRST STEP: 0.3670 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: FED STD 66,AISI/SAE 1010 FED STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.4677 INCHES NOMINAL IN
FSC APPLICATION DATAGASOLINE ENGINE,EXCEPT AIRCRAFT PRIME MOVER TYPE
FIRST STEP DIAMETER0.9000 INCHES NOMINAL IN
END DIAMETER0.8000 INCHES NOMINAL IN
DISTANCE FROM END TO FIRST STEP0.3670 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATIONFED STD 66,AISI/SAE 1010 FED STD SINGLE MATERIAL RESPONSE
COUNTERBORE LENGTH0.3420 INCHES NOMINAL IN
FEATURES PROVIDEDCASEHARDENED
SUBSTITUTES & CROSS-REFERENCES 3
105306R1Reference document
Same NSN cross-reference
Reference document — Secondary reference
SR253Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
R838Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 107306R2?
107306R2 is a SEAT,HELICAL COMPRESSION SPRING.
What parts can replace 107306R2?
There are 3 known substitutes for 107306R2: 105306R1, SR253, R838. Substitute compatibility should be verified for your specific system.
What is the NSN for 107306R2?
107306R2 is cataloged in the U.S. Government catalog under NSN 5340-00-386-3621. 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.