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7M9628 — SEAT,HELICAL COMPRESSION SPRING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7M9628: SEAT,HELICAL COMPRESSION SPRING.

SEAT,HELICAL COMPRESSION SPRING. Key specifications include material: STEEL, design_type: SOLID, end_diameter: 1.0750 INCHES MINIMUM AND 1.0850 INCHES MAXIMUM IN, bore_diameter: 0.5320 INCHES MINIMUM AND 0.5340 INCHES MAXIMUM IN, overall_height: 0.5550 INCHES NOMINAL IN, style_designator: SEAT. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-074-3526, 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
7M9628
NSN: 5340-00-074-3526
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
design_typeSOLID
end_diameter1.0750 INCHES MINIMUM AND 1.0850 INCHES MAXIMUM IN
bore_diameter0.5320 INCHES MINIMUM AND 0.5340 INCHES MAXIMUM IN
overall_height0.5550 INCHES NOMINAL IN
style_designatorSEAT
bore_taper_in_deg7.0
first_step_diameter1.5000 INCHES NOMINAL IN
counterbore_diameter0.5800 INCHES NOMINAL IN
distance_from_end_to_first_step0.3750 INCHES NOMINAL IN
material_document_and_classification1E303, FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
NSN5340-00-074-3526
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7M9628 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
•
FIRST STEP DIAMETER: 1.5000 INCHES NOMINAL IN
•
END DIAMETER: 1.0750 INCHES MINIMUM AND 1.0850 INCHES MAXIMUM IN
•
DISTANCE FROM END TO FIRST STEP: 0.3750 INCHES NOMINAL IN
•
DESIGN TYPE: SOLID
•
STYLE DESIGNATOR: SEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: 1E303, FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
•
COUNTERBORE DIAMETER: 0.5800 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.5550 INCHES NOMINAL IN
FIRST STEP DIAMETER1.5000 INCHES NOMINAL IN
END DIAMETER1.0750 INCHES MINIMUM AND 1.0850 INCHES MAXIMUM IN
DISTANCE FROM END TO FIRST STEP0.3750 INCHES NOMINAL IN
DESIGN TYPESOLID
STYLE DESIGNATORSEAT
MATERIAL DOCUMENT AND CLASSIFICATION1E303, FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE
COUNTERBORE DIAMETER0.5800 INCHES NOMINAL IN
BORE TAPER IN DEG7.0
BORE DIAMETER0.5320 INCHES MINIMUM AND 0.5340 INCHES MAXIMUM 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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7M9628?
7M9628 is a SEAT,HELICAL COMPRESSION SPRING.
What is the NSN for 7M9628?
7M9628 is cataloged in the U.S. Government catalog under NSN 5340-00-074-3526. 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.