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PartsTable / COMPONENT / A500-418
A500-418 ✓ 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 COMP 302, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.420 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN, major_thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-817-1118, 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
A500-418
NSN: 5325-00-817-1118
FSC: 5325
CAGE: 10639 — AVIONICS SPECIALTIES, INC. (USA)
SPECIFICATIONS
materialSTEEL COMP 302
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.420 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
major_thickness0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
outside_diameter0.504 INCHES MINIMUM AND 0.539 INCHES MAXIMUM IN
surface_treatmentPASSIVATE
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationAISI 302 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-817-1118
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A500-418 · 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: STRAIGHT GAP
•
END STYLE: 90 DEGREE PARALLEL
•
MATERIAL: STEEL COMP 302
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI 302 ASSN STD SINGLE MATERIAL RESPONSE
•
SURFACE TREATMENT: PASSIVATE
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
USAGE DESIGN: EXTERNAL
TECHNICAL CHARACTERISTICS (FLIS)
RING STYLESTRAIGHT GAP
END STYLE90 DEGREE PARALLEL
MATERIALSTEEL COMP 302
MATERIAL DOCUMENT AND CLASSIFICATIONAISI 302 ASSN STD SINGLE MATERIAL RESPONSE
SURFACE TREATMENTPASSIVATE
CASEHARDENING INDICATORNOT CASEHARDENED
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
USAGE DESIGNEXTERNAL
INSIDE DIAMETER0.420 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
MAJOR THICKNESS0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
263-3301Interchangeable
interchangeable cross-reference
interchangeable
1223-526Interchangeable
interchangeable cross-reference
interchangeable
60101Interchangeable
interchangeable cross-reference
interchangeable
1000-15STInterchangeable
interchangeable cross-reference
interchangeable
C1498GInterchangeable
interchangeable cross-reference
interchangeable
264641Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A500-418?
A500-418 is a RING,RETAINING.
What parts can replace A500-418?
There are 11 known substitutes for A500-418: 263-3301, 1223-526, 60101 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A500-418?
A500-418 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-817-1118. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026