PartsTable
Technical Data Sheet
Download PDF

RR-168 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

RR-168: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL OR STEEL CORROSION RESISTING, ring_style: SPECIAL FLAT, inside_diameter: 1.687 INCHES NOMINAL IN, major_thickness: 0.049 INCHES NOMINAL IN, outside_diameter: 1.750 INCHES NOMINAL IN, end_item_identification: 1520-01-106-9519; HELICOPTER, ATTACK. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-534-0351, 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
RR-168
NSN: 5325-01-534-0351
FSC: 5325 — Fastening Devices
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL OR STEEL CORROSION RESISTING
ring_styleSPECIAL FLAT
inside_diameter1.687 INCHES NOMINAL IN
major_thickness0.049 INCHES NOMINAL IN
outside_diameter1.750 INCHES NOMINAL IN
end_item_identification1520-01-106-9519; HELICOPTER, ATTACK
cross-sectional_shape_styleSPLIT ROUND
part_name_assigned_by_controlling_agencyINTERNAL SNAP RING
NSN5325-01-534-0351
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RR-168 · 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
•
CROSS-SECTIONAL SHAPE STYLE: SPLIT ROUND
•
OUTSIDE DIAMETER: 1.750 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.049 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.687 INCHES NOMINAL IN
•
RING STYLE: SPECIAL FLAT
•
MATERIAL: STEEL OR STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL SHAPE STYLESPLIT ROUND
OUTSIDE DIAMETER1.750 INCHES NOMINAL IN
MAJOR THICKNESS0.049 INCHES NOMINAL IN
INSIDE DIAMETER1.687 INCHES NOMINAL IN
RING STYLESPECIAL FLAT
PART NAME ASSIGNED BY CONTROLLING AGENCYINTERNAL SNAP RING
END ITEM IDENTIFICATION1520-01-106-9519; HELICOPTER, ATTACK
MATERIALSTEEL OR STEEL CORROSION RESISTING
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
HS3014Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy RR-168?
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 RR-168?
RR-168 is a RING,RETAINING.
What parts can replace RR-168?
There is 1 known substitute for RR-168: HS3014. Substitute compatibility should be verified for your specific system.
What is the NSN for RR-168?
RR-168 is cataloged in the U.S. Government catalog under NSN 5325-01-534-0351. 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 — RR-168

✓ 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.