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Technical Data Sheet
PartsTable / COMPONENT / 321379R1
321379R1 ✓ 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, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: INTERNAL, inside_diameter: 0.626 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN, major_thickness: 0.066 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-920-0222, 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
321379R1
NSN: 5325-00-920-0222
FSC: 5325
CAGE: 29510 — KOMATSU AMERICAN INTL CO (USA)
SPECIFICATIONS
materialSTEEL
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designINTERNAL
inside_diameter0.626 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
major_thickness0.066 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
outside_diameter0.688 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-920-0222
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 321379R1 · 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: STEEL
•
MAJOR THICKNESS: 0.066 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
USAGE DESIGN: INTERNAL
•
INSIDE DIAMETER: 0.626 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
•
END STYLE: 90 DEGREE PARALLEL
•
RING STYLE: STRAIGHT GAP
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
MAJOR THICKNESS0.066 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
USAGE DESIGNINTERNAL
INSIDE DIAMETER0.626 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
END STYLE90 DEGREE PARALLEL
RING STYLESTRAIGHT GAP
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
1DD779Interchangeable
interchangeable cross-reference
interchangeable
403818Interchangeable
interchangeable cross-reference
interchangeable
615746C1Interchangeable
interchangeable cross-reference
interchangeable
403818-10Interchangeable
interchangeable cross-reference
interchangeable
12715Interchangeable
interchangeable cross-reference
interchangeable
9M8919Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 321379R1?
321379R1 is a RING,RETAINING.
What parts can replace 321379R1?
There are 6 known substitutes for 321379R1: 1DD779, 403818, 615746C1 and 3 more. Substitute compatibility should be verified for your specific system.
Is 321379R1 still available?
321379R1 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