618-3-7 — SPRING,HELICAL,EXTENSION

✓ Government record, cited

— · ORING SEAL

PRODUCT OVERVIEW

618-3-7: SPRING,HELICAL,EXTENSION.

The SPRING,HELICAL,EXTENSION is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.437 INCHES NOMINAL IN, thread_class: 3A A, grip_diameter: 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN, head_diameter: 0.258 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-360-8491, 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

618-3-7

NSN: 5330-00-360-8491
NIINs: 003608491, 011232479, 014706044
FSC: 5330 — Packing and Gasket Materials
CAGE: 22593 — FITZGERALD GASKET A CO OF TANNETICS INC (USA)

SPECIFICATIONS

material	STEEL COMP H11 OVERALL
head_style	FLAT COUNTERSUNK
grip_length	0.437 INCHES NOMINAL IN
thread_class	3A A
grip_diameter	0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN
head_diameter	0.258 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN
thread_length	0.363 INCHES NOMINAL IN
fastener_length	0.785 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN
thread_direction	RIGHT-HAND
countersink_angle	99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
surface_treatment	CADMIUM OVERALL
internal_drive_style	OFFSET CRUCIFORM (TORQUE SET)
NSN	5330-00-360-8491

COMPONENT DIAGRAM

SUBSTITUTES & CROSS-REFERENCES 9

22564AReference document

Same NSN cross-reference

Reference document — Design control — primary reference

851214Reference document

Same NSN cross-reference

Reference document — Secondary reference

06769ABSame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

22564Reference document

Same NSN cross-reference

Reference document — Secondary reference

96024Reference document

Same NSN cross-reference

Reference document — Secondary reference

16EV201Reference document

Same NSN cross-reference

Reference document — Secondary reference

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required

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FREQUENTLY ASKED QUESTIONS

What is 618-3-7?

618-3-7 is a SPRING,HELICAL,EXTENSION.

What parts can replace 618-3-7?

There are 9 known substitutes for 618-3-7: 22564A, 851214, 06769AB and 6 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 618-3-7?

618-3-7 is cataloged in the U.S. Government catalog under NSN 5330-00-360-8491. This indicates validated use in U.S. government and defense supply chains.

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618-3-7 — SPRING,HELICAL,EXTENSION

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