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Technical Data Sheet
PartsTable / COMPONENT / FL4357
FL4357 ✓ 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, usage_design: EXTERNAL, inside_diameter: 0.243 INCHES NOMINAL IN, major_thickness: 0.025 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED, cross-sectional_shape_style: RECTANGULAR. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-664-8885, 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
FL4357
NSN: 5325-00-664-8885
FSC: 5325
CAGE: 15235 — CROUSE-HINDS CO (USA)
SPECIFICATIONS
materialSTEEL
ring_styleE
usage_designEXTERNAL
inside_diameter0.243 INCHES NOMINAL IN
major_thickness0.025 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-664-8885
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FL4357 · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: E
•
INSIDE DIAMETER: 0.243 INCHES NOMINAL IN
•
USAGE DESIGN: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
MAJOR THICKNESS: 0.025 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEE
INSIDE DIAMETER0.243 INCHES NOMINAL IN
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.025 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
X5133-31MDInterchangeable
interchangeable cross-reference
interchangeable
5325PL1361944Interchangeable
interchangeable cross-reference
interchangeable
5133-31-S-MDInterchangeable
interchangeable cross-reference
interchangeable
1000X31Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FL4357?
FL4357 is a RING,RETAINING.
What parts can replace FL4357?
There are 4 known substitutes for FL4357: X5133-31MD, 5325PL1361944, 5133-31-S-MD and 1 more. Substitute compatibility should be verified for your specific system.
Is FL4357 still available?
FL4357 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