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S1589 ✓ 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 SCREW,CAP,HEXAGON HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.500 INCHES MINIMUM AND 1.727 INCHES MAXIMUM IN, surface_finish: 63.0 MICROINCHES THREADS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-010-0185, 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
S1589
NSN: 5305-00-010-0185
FSC: 5305
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM IN
thread_class2A A
thread_length1.500 INCHES MINIMUM AND 1.727 INCHES MAXIMUM IN
surface_finish63.0 MICROINCHES THREADS
fastener_length1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL
width_between_flats0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
nominal_thread_diameter0.625 INCHES IN
NSN5305-00-010-0185
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S1589 · 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 QUANTITY PER INCH: 11
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL OVERALL
•
HEAD HEIGHT: 0.456 INCHES MINIMUM AND 0.481 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.719 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
•
WIDTH BETWEEN FLATS: 0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH11
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL OVERALL
HEAD HEIGHT0.456 INCHES MINIMUM AND 0.481 INCHES MAXIMUM IN
FASTENER LENGTH1.719 INCHES MINIMUM AND 1.781 INCHES MAXIMUM IN
THREAD CLASS2A A
WIDTH BETWEEN FLATS0.860 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.625 INCHES IN
THREAD LENGTH1.500 INCHES MINIMUM AND 1.688 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
07CL168Interchangeable
interchangeable cross-reference
interchangeable
38624Interchangeable
interchangeable cross-reference
interchangeable
GA53315L19Interchangeable
interchangeable cross-reference
interchangeable
215095-0182Interchangeable
interchangeable cross-reference
interchangeable
AES01C625A75WA6AA1Interchangeable
interchangeable cross-reference
interchangeable
B1821AH063C175NInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is S1589?
S1589 is a SCREW,CAP,HEXAGON HEAD.
What parts can replace S1589?
There are 18 known substitutes for S1589: 07CL168, 38624, GA53315L19 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for S1589?
S1589 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-010-0185. 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