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Technical Data Sheet
PartsTable / COMPONENT / 3X146
3X146 ✓ 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 material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.187 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.500 INCHES MAXIMUM IN, fastener_length: 0.500 INCHES NOMINAL 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 5305-00-206-5836, 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
3X146
NSN: 5305-00-206-5836
FSC: 5305
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.187 INCHES NOMINAL IN
thread_class2A A
thread_length0.500 INCHES MAXIMUM IN
fastener_length0.500 INCHES NOMINAL IN
hardness_rating100.0 ROCKWELL B MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats0.625 INCHES NOMINAL IN
minimum_yield_strength55000 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.438 INCHES IN
minimum_tensile_strength69000 POUNDS PER SQUARE INCH LBS
NSN5305-00-206-5836
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3X146 · 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
•
FASTENER LENGTH: 0.500 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY HEAD HEIGHT AND WIDTH BETWEEN FLATS
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10 STYLE
•
MINIMUM YIELD STRENGTH: 55000 POUNDS PER SQUARE INCH LBS
•
HARDNESS RATING: 100.0 ROCKWELL B MAXIMUM OVERALL
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH0.500 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY HEAD HEIGHT AND WIDTH BETWEEN FLATS
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10 STYLE
MINIMUM YIELD STRENGTH55000 POUNDS PER SQUARE INCH LBS
HARDNESS RATING100.0 ROCKWELL B MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNF
MATERIALSTEEL OVERALL
MINIMUM TENSILE STRENGTH69000 POUNDS PER SQUARE INCH LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
BB6266Interchangeable
interchangeable cross-reference
interchangeable
11A7044Interchangeable
interchangeable cross-reference
interchangeable
322237Interchangeable
interchangeable cross-reference
interchangeable
FFS85Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3X146?
3X146 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 3X146?
There are 4 known substitutes for 3X146: BB6266, 11A7044, 322237 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3X146?
3X146 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-206-5836. 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