PartsTable
Technical Data Sheet
8B5144 ✓ 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 COMP E52100 OVERALL, head_style: HEXAGON, grip_length: 1.750 INCHES NOMINAL IN, head_height: 0.457 INCHES MINIMUM AND 0.481 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.250 INCHES MINIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-174-4146, 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
8B5144
NSN: 5306-00-174-4146
FSC: 5306
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP E52100 OVERALL
head_styleHEXAGON
grip_length1.750 INCHES NOMINAL IN
head_height0.457 INCHES MINIMUM AND 0.481 INCHES MAXIMUM IN
thread_class2A A
thread_length1.250 INCHES MINIMUM IN
fastener_length3.000 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedUNFINISHED HEAD
width_between_flats0.922 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5306-00-174-4146
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 8B5144 · 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
MINIMUM TENSILE STRENGTH: 145000 POUNDS PER SQUARE INCH LBS
MATERIAL: STEEL COMP E52100 OVERALL
HEAD HEIGHT: 0.457 INCHES MINIMUM AND 0.481 INCHES MAXIMUM IN
HEAD STYLE: HEXAGON
THREAD CLASS: 2A A
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATOR: UNF
HARDNESS RATING: 30.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MINIMUM TENSILE STRENGTH145000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL COMP E52100 OVERALL
HEAD HEIGHT0.457 INCHES MINIMUM AND 0.481 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
THREAD CLASS2A A
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
HARDNESS RATING30.0 ROCKWELL C MAXIMUM OVERALL
GRIP LENGTH1.750 INCHES NOMINAL IN
FASTENER LENGTH3.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 25
MS35751-137Upgraded Successor
successor cross-reference
successor
FF-B-584 TY1CL1STAGR1Upgraded Successor
successor cross-reference
successor
FF-B-584Upgraded Successor
successor cross-reference
successor
MS90728-42Upgraded Successor
successor cross-reference
successor
5306002258506Upgraded Successor
successor cross-reference
successor
1D4539Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 8B5144?
8B5144 is a BOLT,MACHINE.
What parts can replace 8B5144?
There are 25 known substitutes for 8B5144: MS35751-137, FF-B-584 TY1CL1STAGR1, FF-B-584 and 22 more. Substitute compatibility should be verified for your specific system.
Is 8B5144 still available?
8B5144 is currently cancelled.
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