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RR225 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

RR225: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPECIAL FLAT, usage_design: INTERNAL, inside_diameter: 2.071 INCHES MINIMUM AND 2.096 INCHES MAXIMUM IN, major_thickness: 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN, strength_rating: ERR-060. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-252-2779, 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
RR225
NSN: 5325-00-252-2779
NIINs: 002522779, 006018277
FSC: 5325 — Fastening Devices
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter2.071 INCHES MINIMUM AND 2.096 INCHES MAXIMUM IN
major_thickness0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN
strength_ratingERR-060
outside_diameter2.347 INCHES MINIMUM AND 2.372 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating73.0 ROCKWELL A MINIMUM AND 77.9 ROCKWELL A MAXIMUM
cross-sectional_shape_styleDOUBLE OVAL
nondefinitive_spec/std_data2 TYPE AND 1 CLASS AND 2.250 INCH SIZE IN
NSN5325-00-252-2779
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RR225 · 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
•
MATERIAL HARDNESS RATING: 65.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 68.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
•
USAGE DESIGN: INTERNAL
•
STRENGTH RATING: ERR-060
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1080 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 2.347 INCHES MINIMUM AND 2.362 INCHES MAXIMUM IN
•
MAJOR THICKNESS: 0.046 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
•
INSIDE DIAMETER: 2.071 INCHES MINIMUM AND 2.086 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
MATERIAL HARDNESS RATING65.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 68.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM
USAGE DESIGNINTERNAL
STRENGTH RATINGERR-060
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1080 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER2.347 INCHES MINIMUM AND 2.362 INCHES MAXIMUM IN
MAJOR THICKNESS0.046 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN
INSIDE DIAMETER2.071 INCHES MINIMUM AND 2.086 INCHES MAXIMUM IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL FLAT
SUBSTITUTES & CROSS-REFERENCES 2
626-001-9168Reference document
Same NSN cross-reference
Reference document — Secondary reference
WH-225Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is RR225?
RR225 is a RING,RETAINING.
What parts can replace RR225?
There are 2 known substitutes for RR225: 626-001-9168, WH-225. Substitute compatibility should be verified for your specific system.
What is the NSN for RR225?
RR225 is cataloged in the U.S. Government catalog under NSN 5325-00-252-2779. 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.