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Technical Data Sheet
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AES14C375A00BB3A86 — Technical Data Sheet

✓ 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,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT CHAMFER, head_height: 0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN, thread_length: 0.844 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5305-01-341-2251, 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
AES14C375A00BB3A86
NSN: 5305-01-341-2251
FSC: 5305
CAGE: 05047 — THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT CHAMFER
head_height0.368 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.550 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
thread_length0.844 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
fastener_length0.969 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN
hardness_rating39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_across_flats0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
NSN5305-01-341-2251
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: AES14C375A00BB3A86 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH ACROSS FLATS: 0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
•
MINIMUM YIELD STRENGTH: 155000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL OVERALL
•
THREAD QUANTITY PER INCH: 16
•
MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
TECHNICAL CHARACTERISTICS
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.313 INCHES MINIMUM AND 0.316 INCHES MAXIMUM IN
MINIMUM YIELD STRENGTH155000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL OVERALL
THREAD QUANTITY PER INCH16
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH LBS
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
DEPARTURE FROM CITED DOCUMENTAS MODIFIED BY SURFACE TREATMENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
91251A624InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
FFS86InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
NAS1352-6-16InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
10389775InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
MS16997-99InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
100A900112InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AES14C375A00BB3A86?
AES14C375A00BB3A86 is a SCREW,CAP,SOCKET HEAD.
What parts can replace AES14C375A00BB3A86?
There are 6 known substitutes for AES14C375A00BB3A86: 91251A624, FFS86, NAS1352-6-16 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AES14C375A00BB3A86?
AES14C375A00BB3A86 is cataloged in the Federal Logistics Information System under NSN 5305-01-341-2251. 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: October 2026