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Technical Data Sheet
PartsTable / COMPONENT / 1A4594
1A4594 ✓ 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 RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: OFFSET, usage_design: EXTERNAL, end_play_takeup: 0.375 INCHES MAXIMUM IN, inside_diameter: 3.031 INCHES NOMINAL IN, strength_rating: ERR-060. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-496-2235, 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
1A4594
NSN: 5325-00-496-2235
FSC: 5325
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL
ring_styleOFFSET
usage_designEXTERNAL
end_play_takeup0.375 INCHES MAXIMUM IN
inside_diameter3.031 INCHES NOMINAL IN
strength_ratingERR-060
outside_diameter3.272 INCHES NOMINAL IN
material_diameter0.121 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleROUND
NSN5325-00-496-2235
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1A4594 · 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
•
RING STYLE: OFFSET
•
MATERIAL: STEEL
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
INSIDE DIAMETER: 3.031 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 3.272 INCHES NOMINAL IN
•
STRENGTH RATING: ERR-060
•
USAGE DESIGN: EXTERNAL
•
MATERIAL DIAMETER: 0.121 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
RING STYLEOFFSET
MATERIALSTEEL
CASEHARDENING INDICATORNOT CASEHARDENED
INSIDE DIAMETER3.031 INCHES NOMINAL IN
OUTSIDE DIAMETER3.272 INCHES NOMINAL IN
STRENGTH RATINGERR-060
USAGE DESIGNEXTERNAL
MATERIAL DIAMETER0.121 INCHES NOMINAL IN
MATERIAL HARDNESS RATING42.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
END PLAY TAKEUP0.375 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
9451Interchangeable
interchangeable cross-reference
interchangeable
5305M1TX9Interchangeable
interchangeable cross-reference
interchangeable
5305X1Interchangeable
interchangeable cross-reference
interchangeable
5305Interchangeable
interchangeable cross-reference
interchangeable
1377-M275Interchangeable
interchangeable cross-reference
interchangeable
M1A1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1A4594?
1A4594 is a RING,RETAINING.
What parts can replace 1A4594?
There are 18 known substitutes for 1A4594: 9451, 5305M1TX9, 5305X1 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1A4594?
1A4594 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-496-2235. 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