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PartsTable / COMPONENT / 003311A
003311A ✓ 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 OVERALL, head_style: HEXAGON, head_height: 0.562 INCHES NOMINAL IN, thread_class: 2A A, thread_length: 1.500 INCHES MINIMUM IN, fastener_length: 3.500 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 5306-00-254-9662, 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
003311A
NSN: 5306-00-254-9662
FSC: 5306
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.562 INCHES NOMINAL IN
thread_class2A A
thread_length1.500 INCHES MINIMUM IN
fastener_length3.500 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C NOMINAL OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
width_between_flats1.125 INCHES NOMINAL IN
minimum_yield_strength145000 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.750 INCHES IN
NSN5306-00-254-9662
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 003311A · 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
•
WIDTH BETWEEN FLATS: 1.125 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
MINIMUM YIELD STRENGTH: 145000 POUNDS PER SQUARE INCH LBS
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 30.0 ROCKWELL C NOMINAL OVERALL
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD SERIES DESIGNATOR: UNF
•
HEAD HEIGHT: 0.562 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS1.125 INCHES NOMINAL IN
THREAD CLASS2A A
MINIMUM YIELD STRENGTH145000 POUNDS PER SQUARE INCH LBS
MATERIALSTEEL OVERALL
HARDNESS RATING30.0 ROCKWELL C NOMINAL OVERALL
FEATURES PROVIDEDFINISHED HEAD
THREAD SERIES DESIGNATORUNF
HEAD HEIGHT0.562 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.750 INCHES IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
55635Interchangeable
interchangeable cross-reference
interchangeable
3311AInterchangeable
interchangeable cross-reference
interchangeable
HP3311AInterchangeable
interchangeable cross-reference
interchangeable
33-11PInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 003311A?
003311A is a BOLT,MACHINE.
What parts can replace 003311A?
There are 4 known substitutes for 003311A: 55635, 3311A, HP3311A and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 003311A?
003311A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-254-9662. 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