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PartsTable / COMPONENT / R11598
R11598 ✓ 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 1020 OVERALL, head_style: HEXAGON, head_height: 0.375 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.250 INCHES MINIMUM IN, fastener_length: 2.250 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 5306-00-430-9436, 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
R11598
NSN: 5306-00-430-9436
FSC: 5306
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 1020 OVERALL
head_styleHEXAGON
head_height0.375 INCHES NOMINAL IN
thread_class2A A
thread_length1.250 INCHES MINIMUM IN
fastener_length2.250 INCHES NOMINAL IN
hardness_rating79.0 ROCKWELL B NOMINAL OVERALL
thread_directionRIGHT-HAND
features_providedUNFINISHED HEAD
width_between_flats0.750 INCHES NOMINAL IN
minimum_yield_strength43000 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.500 INCHES IN
NSN5306-00-430-9436
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: R11598 · 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 DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2A A
•
FASTENER LENGTH: 2.250 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.750 INCHES NOMINAL IN
•
FEATURES PROVIDED: UNFINISHED HEAD
•
MATERIAL: STEEL COMP 1020 OVERALL
•
THREAD QUANTITY PER INCH: 20
•
MINIMUM YIELD STRENGTH: 43000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A A
FASTENER LENGTH2.250 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
FEATURES PROVIDEDUNFINISHED HEAD
MATERIALSTEEL COMP 1020 OVERALL
THREAD QUANTITY PER INCH20
MINIMUM YIELD STRENGTH43000 POUNDS PER SQUARE INCH LBS
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER2.125 INCHES NOMINAL FIRST HOLE IN
HEAD HEIGHT0.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
55020Upgraded Successor
successor cross-reference
successor
11598Upgraded Successor
successor cross-reference
successor
587LXUpgraded Successor
successor cross-reference
successor
26256007Interchangeable
interchangeable cross-reference
interchangeable
2656007Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R11598?
R11598 is a BOLT,MACHINE.
What parts can replace R11598?
There are 5 known substitutes for R11598: 55020, 11598, 587LX and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R11598?
R11598 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-430-9436. 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