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Technical Data Sheet
PartsTable / COMPONENT / 121-233
121-233 ✓ 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 color: BLACK OVERALL, material: STEEL OVERALL, head_style: HEXAGON EXTENDED WASHER, head_height: 0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 0.625 INCHES MINIMUM AND 0.750 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 5306-01-314-1917, 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
121-233
NSN: 5306-01-314-1917
FSC: 5306
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL OVERALL
head_styleHEXAGON EXTENDED WASHER
head_height0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
thread_class2A A
thread_length0.625 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
fastener_length0.750 INCHES NOMINAL IN
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
width_between_flats0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
nominal_thread_diameter0.375 INCHES IN
NSN5306-01-314-1917
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 121-233 · 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 LENGTH: 0.625 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
HEAD HEIGHT: 0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
•
FEATURES PROVIDED: FINISHED HEAD
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
WIDTH BETWEEN FLATS: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
COLOR: BLACK OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH0.625 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
NOMINAL THREAD DIAMETER0.375 INCHES IN
HEAD HEIGHT0.270 INCHES MINIMUM AND 0.295 INCHES MAXIMUM IN
FEATURES PROVIDEDFINISHED HEAD
FASTENER LENGTH0.750 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
COLORBLACK OVERALL
HEAD STYLEHEXAGON EXTENDED WASHER
THREAD QUANTITY PER INCH16
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
BRH155AInterchangeable
interchangeable cross-reference
interchangeable
521531Interchangeable
interchangeable cross-reference
interchangeable
WBR500-16Interchangeable
interchangeable cross-reference
interchangeable
160-101Interchangeable
interchangeable cross-reference
interchangeable
3M11Interchangeable
interchangeable cross-reference
interchangeable
539D844P1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 121-233?
121-233 is a BOLT,MACHINE.
What parts can replace 121-233?
There are 11 known substitutes for 121-233: BRH155A, 521531, WBR500-16 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 121-233?
121-233 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-314-1917. 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