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Technical Data Sheet
PartsTable / COMPONENT / BB61S59-323PC52
BB61S59-323PC52 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.203 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 0.625 INCHES MAXIMUM IN, fastener_length: 0.625 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-206-4335, 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
BB61S59-323PC52
NSN: 5306-00-206-4335
FSC: 5306
CAGE: 80064 — NAVAL SHIP SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.203 INCHES NOMINAL IN
thread_class2A A
thread_length0.625 INCHES MAXIMUM IN
fastener_length0.625 INCHES NOMINAL IN
hardness_rating100.0 ROCKWELL B NOMINAL OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats0.500 INCHES NOMINAL IN
nominal_thread_diameter0.312 INCHES IN
minimum_tensile_strength69000 POUNDS PER SQUARE INCH LBS
NSN5306-00-206-4335
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: BB61S59-323PC52 · 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
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
FASTENER LENGTH: 0.625 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.203 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD QUANTITY PER INCH: 24
•
MATERIAL: STEEL OVERALL
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD DIAMETER0.312 INCHES IN
FASTENER LENGTH0.625 INCHES NOMINAL IN
HEAD HEIGHT0.203 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FEATURES PROVIDEDFINISHED HEAD
THREAD QUANTITY PER INCH24
MATERIALSTEEL OVERALL
THREAD CLASS2A A
WIDTH BETWEEN FLATS0.500 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAA TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
459084Interchangeable
interchangeable cross-reference
interchangeable
150171Interchangeable
interchangeable cross-reference
interchangeable
BAC1503-1470Interchangeable
interchangeable cross-reference
interchangeable
AMS-QQ-A-200/3Interchangeable
interchangeable cross-reference
interchangeable
PA5540Interchangeable
interchangeable cross-reference
interchangeable
MC1531FInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BB61S59-323PC52?
BB61S59-323PC52 is a BOLT,MACHINE.
What parts can replace BB61S59-323PC52?
There are 15 known substitutes for BB61S59-323PC52: 459084, 150171, BAC1503-1470 and 12 more. Substitute compatibility should be verified for your specific system.
Is BB61S59-323PC52 still available?
BB61S59-323PC52 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026