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Technical Data Sheet
PartsTable / COMPONENT / 8350591
8350591 ✓ 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: 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.750 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN, fastener_length: 0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-940-9018, 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
8350591
NSN: 5306-00-940-9018
FSC: 5306
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
thread_class2A A
thread_length0.750 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
fastener_length0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
locking_featureDISTORTIONS BEARING SURFACE OF HEAD
thread_directionRIGHT-HAND
features_providedUNFINISHED HEAD
width_between_flats0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
minimum_yield_strength130000 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.312 INCHES IN
NSN5306-00-940-9018
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 8350591 · 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: 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNF
•
LOCKING FEATURE: DISTORTIONS BEARING SURFACE OF HEAD
•
MATERIAL: STEEL OVERALL
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
FEATURES PROVIDED: UNFINISHED HEAD
•
MINIMUM YIELD STRENGTH: 130000 POUNDS PER SQUARE INCH LBS
•
FASTENER LENGTH: 0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
HEAD HEIGHT0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNF
LOCKING FEATUREDISTORTIONS BEARING SURFACE OF HEAD
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
FEATURES PROVIDEDUNFINISHED HEAD
MINIMUM YIELD STRENGTH130000 POUNDS PER SQUARE INCH LBS
FASTENER LENGTH0.844 INCHES MINIMUM AND 0.906 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
THREAD QUANTITY PER INCH24
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
12110-1Interchangeable
interchangeable cross-reference
interchangeable
2085381-4Interchangeable
interchangeable cross-reference
interchangeable
C-12110-1Interchangeable
interchangeable cross-reference
interchangeable
S510044Interchangeable
interchangeable cross-reference
interchangeable
401590Interchangeable
interchangeable cross-reference
interchangeable
96170Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8350591?
8350591 is a BOLT,MACHINE.
What parts can replace 8350591?
There are 9 known substitutes for 8350591: 12110-1, 2085381-4, C-12110-1 and 6 more. Substitute compatibility should be verified for your specific system.
Is 8350591 still available?
8350591 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