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PartsTable / COMPONENT / 23AN520-10R18
23AN520-10R18 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: ROUND, head_height: 0.137 INCHES NOMINAL IN, thread_class: 2A A, head_diameter: 0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN, thread_length: 1.125 INCHES NOMINAL IN, screw_material: STEEL COMP 1010. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-820-5283, 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
23AN520-10R18
NSN: 5305-00-820-5283
FSC: 5305
CAGE: 80045 — L3HARRIS CINCINNATI ELECTRONICS CORPORATION (USA)
SPECIFICATIONS
head_styleROUND
head_height0.137 INCHES NOMINAL IN
thread_class2A A
head_diameter0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
thread_length1.125 INCHES NOMINAL IN
screw_materialSTEEL COMP 1010
fastener_length1.125 INCHES NOMINAL IN
thread_directionRIGHT-HAND
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.190 INCHES IN
screw_surface_treatmentCADMIUM AND CHROMATE
thread_quantity_per_inch32
NSN5305-00-820-5283
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 23AN520-10R18 · 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
•
HEAD HEIGHT: 0.137 INCHES NOMINAL IN
•
THREAD LENGTH: 1.125 INCHES NOMINAL IN
•
SCREW MATERIAL: STEEL COMP 1010
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-671 FED SPEC SINGLE MATERIAL RESPONSE
•
THREAD SERIES DESIGNATOR: UNF
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
SCREW SURFACE TREATMENT: CADMIUM AND CHROMATE
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.137 INCHES NOMINAL IN
THREAD LENGTH1.125 INCHES NOMINAL IN
SCREW MATERIALSTEEL COMP 1010
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-671 FED SPEC SINGLE MATERIAL RESPONSE
THREAD SERIES DESIGNATORUNF
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
SCREW SURFACE TREATMENTCADMIUM AND CHROMATE
THREAD QUANTITY PER INCH32
HEAD DIAMETER0.334 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN
FASTENER LENGTH1.125 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
FFS92ANDTYPE3ANDSTYLE1CInterchangeable
interchangeable cross-reference
interchangeable
1178-10-18Interchangeable
interchangeable cross-reference
interchangeable
AN520-10R18Interchangeable
interchangeable cross-reference
interchangeable
10420877Interchangeable
interchangeable cross-reference
interchangeable
507168-68Interchangeable
interchangeable cross-reference
interchangeable
MS35207-268Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 23AN520-10R18?
23AN520-10R18 is a SCREW,MACHINE.
What parts can replace 23AN520-10R18?
There are 6 known substitutes for 23AN520-10R18: FFS92ANDTYPE3ANDSTYLE1C, 1178-10-18, AN520-10R18 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 23AN520-10R18?
23AN520-10R18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-820-5283. 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