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9166071 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

9166071: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, ring_style: SPIRAL, usage_design: EXTERNAL, inside_diameter: 0.647 INCHES NOMINAL IN, major_thickness: 0.024 INCHES NOMINAL IN, outside_diameter: 0.749 INCHES MINIMUM AND 0.757 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-649-7029, 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
9166071
NSN: 5325-00-649-7029
NIINs: 006497029, 011613646
FSC: 5325 — Fastening Devices
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
ring_styleSPIRAL
usage_designEXTERNAL
inside_diameter0.647 INCHES NOMINAL IN
major_thickness0.024 INCHES NOMINAL IN
outside_diameter0.749 INCHES MINIMUM AND 0.757 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleDOUBLE OVAL
NSN5325-00-649-7029
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 9166071 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
USAGE DESIGN: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 0.749 INCHES MINIMUM AND 0.757 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.024 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.647 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: SPIRAL
•
SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER0.749 INCHES MINIMUM AND 0.757 INCHES MAXIMUM IN
MAJOR THICKNESS0.024 INCHES NOMINAL IN
INSIDE DIAMETER0.647 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPIRAL
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL CORROSION RESISTING
SUBSTITUTES & CROSS-REFERENCES 1
RS68SKReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 9166071?
9166071 is a RING,RETAINING.
What parts can replace 9166071?
There is 1 known substitute for 9166071: RS68SK. Substitute compatibility should be verified for your specific system.
What is the NSN for 9166071?
9166071 is cataloged in the U.S. Government catalog under NSN 5325-00-649-7029. 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.