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Technical Data Sheet
PartsTable / COMPONENT / RR-525C
RR-525C ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: SPECIAL FLAT, usage_design: INTERNAL, inside_diameter: 4.936 INCHES NOMINAL IN, major_thickness: 0.074 INCHES NOMINAL IN, outside_diameter: 5.436 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-200-5217, 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-525C
NSN: 5325-00-200-5217
FSC: 5325
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter4.936 INCHES NOMINAL IN
major_thickness0.074 INCHES NOMINAL IN
outside_diameter5.436 INCHES NOMINAL IN
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleDOUBLE OVAL
material_document_and_classificationSAE 1070 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-200-5217
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RR-525C · 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: INTERNAL
•
OUTSIDE DIAMETER: 5.436 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
MATERIAL: STEEL
•
SURFACE TREATMENT: CADMIUM
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1070 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE
•
INSIDE DIAMETER: 4.936 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS (FLIS)
USAGE DESIGNINTERNAL
OUTSIDE DIAMETER5.436 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
MATERIALSTEEL
SURFACE TREATMENTCADMIUM
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1070 TO 1090 ASSN STD SINGLE MATERIAL RESPONSE
INSIDE DIAMETER4.936 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESPECIAL FLAT
MAJOR THICKNESS0.074 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
HS3014RR525CInterchangeable
interchangeable cross-reference
interchangeable
RR-525CInterchangeable
interchangeable cross-reference
interchangeable
MIL-R-27426Interchangeable
Same NIIN cross-reference
interchangeable
M27426-3215BInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RR-525C?
RR-525C is a RING,RETAINING.
What parts can replace RR-525C?
There are 4 known substitutes for RR-525C: HS3014RR525C, RR-525C, MIL-R-27426 and 1 more. Substitute compatibility should be verified for your specific system.
Is RR-525C still available?
RR-525C is currently cancelled.
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PartsTable Design LLC · partstable.com
Last verified: July 2026