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Technical Data Sheet
PartsTable / COMPONENT / RR318
RR318 ✓ 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: 2.955 INCHES NOMINAL IN, major_thickness: 0.061 INCHES NOMINAL IN, strength_rating: ERR-060. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-598-1441, 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
RR318
NSN: 5325-00-598-1441
FSC: 5325
CAGE: 80756 — SPIROLOX INC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleSPECIAL FLAT
usage_designINTERNAL
inside_diameter2.955 INCHES NOMINAL IN
major_thickness0.061 INCHES NOMINAL IN
strength_ratingERR-060
outside_diameter3.311 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleDOUBLE OVAL
material_document_and_classificationSAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-598-1441
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: RR318 · 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
•
RING STYLE: SPECIAL FLAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE
•
STRENGTH RATING: ERR-060
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
CROSS-SECTIONAL SHAPE STYLE: DOUBLE OVAL
•
OUTSIDE DIAMETER: 3.311 INCHES NOMINAL IN
•
USAGE DESIGN: INTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
RING STYLESPECIAL FLAT
MATERIAL DOCUMENT AND CLASSIFICATIONSAE 1070-1090 ASSN STD SINGLE MATERIAL RESPONSE
STRENGTH RATINGERR-060
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
CROSS-SECTIONAL SHAPE STYLEDOUBLE OVAL
OUTSIDE DIAMETER3.311 INCHES NOMINAL IN
USAGE DESIGNINTERNAL
INSIDE DIAMETER2.955 INCHES NOMINAL IN
MAJOR THICKNESS0.061 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
2057Interchangeable
interchangeable cross-reference
interchangeable
14358Interchangeable
interchangeable cross-reference
interchangeable
J31E16Interchangeable
interchangeable cross-reference
interchangeable
7599786Interchangeable
interchangeable cross-reference
interchangeable
78S6MAND3-20Interchangeable
interchangeable cross-reference
interchangeable
V24T988Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is RR318?
RR318 is a RING,RETAINING.
What parts can replace RR318?
There are 15 known substitutes for RR318: 2057, 14358, J31E16 and 12 more. Substitute compatibility should be verified for your specific system.
Is RR318 still available?
RR318 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026