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Technical Data Sheet
PartsTable / COMPONENT / B43-406
B43-406 ✓ 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 BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_height: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN, thread_length: 1.067 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN, fastener_length: 7.947 INCHES MINIMUM AND 7.977 INCHES MAXIMUM 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 5306-00-206-0762, 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
B43-406
NSN: 5306-00-206-0762
FSC: 5306
CAGE: 25472 — GOODRICH CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_height0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
thread_class3A A
head_diameter1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN
thread_length1.067 INCHES MINIMUM AND 1.097 INCHES MAXIMUM IN
fastener_length7.947 INCHES MINIMUM AND 7.977 INCHES MAXIMUM IN
hardness_rating36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE AND ENAMEL OVERALL
width_across_flats0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-206-0762
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: B43-406 · 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 CLASS: 3A A
•
INTERNAL DRIVE STYLE: HEXAGON
•
THREAD SERIES DESIGNATOR: UNF
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
•
HEAD HEIGHT: 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY FAST LG
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
WIDTH ACROSS FLATS: 0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A A
INTERNAL DRIVE STYLEHEXAGON
THREAD SERIES DESIGNATORUNF
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY FAST LG
NOMINAL THREAD DIAMETER0.625 INCHES IN
WIDTH ACROSS FLATS0.500 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH18
HEAD DIAMETER1.040 INCHES MINIMUM AND 1.050 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
200.10Upgraded Successor
successor cross-reference
successor
200.010Upgraded Successor
successor cross-reference
successor
96-0585Upgraded Successor
successor cross-reference
successor
MS20010Upgraded Successor
successor cross-reference
successor
MS20012-48Upgraded Successor
successor cross-reference
successor
500012-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B43-406?
B43-406 is a BOLT,INTERNAL WRENCHING.
What parts can replace B43-406?
There are 10 known substitutes for B43-406: 200.10, 200.010, 96-0585 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B43-406?
B43-406 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-206-0762. 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