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PartsTable / COMPONENT / AN505C8R8
AN505C8R8 ✓ 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: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.308 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN, thread_length: 0.500 INCHES MAXIMUM IN, fastener_length: 0.500 INCHES NOMINAL IN, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-638-0725, 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
AN505C8R8
NSN: 5305-00-638-0725
FSC: 5305
CAGE: 6CKM8 — INDIAN RIVER LOGISTICS, LLC DBA INDIAN RIVER LOGISTICS LLC (USA)
SPECIFICATIONS
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.308 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
thread_length0.500 INCHES MAXIMUM IN
fastener_length0.500 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.164 INCHES IN
screw_surface_treatmentPASSIVATE
thread_quantity_per_inch32
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
NSN5305-00-638-0725
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AN505C8R8 · 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 DIAMETER: 0.308 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.500 INCHES MAXIMUM IN
•
SCREW MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-S-763,SERIES 400 FED SPEC 2ND MATERIAL RESPONSE
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2A A
•
SCREW SURFACE TREATMENT: PASSIVATE
TECHNICAL CHARACTERISTICS (FLIS)
HEAD DIAMETER0.308 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN
THREAD LENGTH0.500 INCHES MAXIMUM IN
SCREW MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-S-763,SERIES 400 FED SPEC 2ND MATERIAL RESPONSE
NOMINAL THREAD DIAMETER0.164 INCHES IN
FASTENER LENGTH0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
SCREW SURFACE TREATMENTPASSIVATE
COUNTERSINK ANGLE80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
12808Interchangeable
interchangeable cross-reference
interchangeable
14572Interchangeable
interchangeable cross-reference
interchangeable
150PAR/3FL/120WM-130VInterchangeable
interchangeable cross-reference
interchangeable
188034Interchangeable
interchangeable cross-reference
interchangeable
109R1212M102(1021)Interchangeable
interchangeable cross-reference
interchangeable
FS-8705 FIND 27Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AN505C8R8?
AN505C8R8 is a SCREW,MACHINE.
What parts can replace AN505C8R8?
There are 8 known substitutes for AN505C8R8: 12808, 14572, 150PAR/3FL/120WM-130V and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AN505C8R8?
AN505C8R8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-638-0725. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026