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Technical Data Sheet
PartsTable / COMPONENT / 4X231
4X231 ✓ 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 STUD,SHOULDERED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8637H, thread_class: 3A STUD THREAD A, thread_length: 1.250 INCHES MINIMUM NUT THREAD IN, overall_length: 4.875 INCHES NOMINAL IN, hardness_rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM, shoulder_length: 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM 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 5307-00-496-3141, 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
4X231
NSN: 5307-00-496-3141
FSC: 5307
CAGE: 78500 — MERITOR HEAVY VEHICLE SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 8637H
thread_class3A STUD THREAD A
thread_length1.250 INCHES MINIMUM NUT THREAD IN
overall_length4.875 INCHES NOMINAL IN
hardness_rating32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
shoulder_length0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
style_designatorSHOULDERED
thread_directionRIGHT-HAND NUT THREAD
shoulder_diameter1.187 INCHES NOMINAL IN
nominal_thread_size0.750 INCHES STUD THREAD IN
nut_end_shank_length0.937 INCHES NOMINAL IN
distance_across_flats0.963 INCHES MINIMUM AND 0.968 INCHES MAXIMUM IN
NSN5307-00-496-3141
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 4X231 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE
•
SHOULDER DIAMETER: 1.187 INCHES NOMINAL IN
•
HARDNESS RATING: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
•
THREAD CLASS: 3A STUD THREAD A
•
SHOULDER LENGTH: 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 8637H
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE
SHOULDER DIAMETER1.187 INCHES NOMINAL IN
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM
OVERALL LENGTH4.875 INCHES NOMINAL IN
THREAD CLASS3A STUD THREAD A
SHOULDER LENGTH0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN
THREAD CLASS3A NUT THREAD A
MATERIALSTEEL COMP 8637H
THREAD LENGTH0.875 INCHES MINIMUM STUD THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
0641Interchangeable
interchangeable cross-reference
interchangeable
66SSDInterchangeable
interchangeable cross-reference
interchangeable
06 224Interchangeable
interchangeable cross-reference
interchangeable
18866Interchangeable
interchangeable cross-reference
interchangeable
3891T18Interchangeable
interchangeable cross-reference
interchangeable
3891T118Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4X231?
4X231 is a STUD,SHOULDERED.
What parts can replace 4X231?
There are 6 known substitutes for 4X231: 0641, 66SSD, 06 224 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4X231?
4X231 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-00-496-3141. 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