PartsTable
Technical Data Sheet
B18231B05065N ✓ 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,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include head_style: HEXAGON, head_height: 3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM, thread_length: 16.0 MILLIMETERS NOMINAL MM, fastener_length: 65.0 MILLIMETERS NOMINAL MM, thread_direction: RIGHT-HAND, surface_treatment: ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-648-4141, 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
B18231B05065N
NSN: 5305-01-648-4141
FSC: 5305
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM
thread_length16.0 MILLIMETERS NOMINAL MM
fastener_length65.0 MILLIMETERS NOMINAL MM
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
width_between_flats7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM
end_item_identification2355-01-481-8579
nominal_thread_diameter5.0 MILLIMETERS MM
thread_series_designatorISO M
thread_pitch_in_millimeters0.8
external_thread_tolerance_class6G G
NSN5305-01-648-4141
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B18231B05065N · 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: 3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM
WIDTH BETWEEN FLATS: 7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS: 6G G
THREAD LENGTH: 16.0 MILLIMETERS NOMINAL MM
HEAD STYLE: HEXAGON
FASTENER LENGTH: 65.0 MILLIMETERS NOMINAL MM
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT3.3 MILLIMETERS MINIMUM AND 3.6 MILLIMETERS MAXIMUM MM
WIDTH BETWEEN FLATS7.7 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM
EXTERNAL THREAD TOLERANCE CLASS6G G
THREAD LENGTH16.0 MILLIMETERS NOMINAL MM
HEAD STYLEHEXAGON
FASTENER LENGTH65.0 MILLIMETERS NOMINAL MM
PART NAME ASSIGNED BY CONTROLLING AGENCYMETRIC HEX CAP SCREW
THREAD DIRECTIONRIGHT-HAND
THREAD PITCH IN MILLIMETERS0.8
NOMINAL THREAD DIAMETER5.0 MILLIMETERS MM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
AES07M08B050CG8A91Interchangeable
interchangeable cross-reference
interchangeable
B18231B08050NInterchangeable
interchangeable cross-reference
interchangeable
ASME B18.2.3.1MInterchangeable
interchangeable cross-reference
interchangeable
AES07M08B070CG9A81Interchangeable
interchangeable cross-reference
interchangeable
B18231B08070NInterchangeable
interchangeable cross-reference
interchangeable
B18231B05016NInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B18231B05065N?
B18231B05065N is a SCREW,CAP,HEXAGON HEAD.
What parts can replace B18231B05065N?
There are 24 known substitutes for B18231B05065N: AES07M08B050CG8A91, B18231B08050N, ASME B18.2.3.1M and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B18231B05065N?
B18231B05065N is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-648-4141. This indicates validated use in U.S. government and defense supply chains.
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