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Technical Data Sheet
PartsTable / COMPONENT / 2C1240J
2C1240J ✓ 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 head_style: HEXAGON, head_height: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.750 INCHES MINIMUM AND 1.938 INCHES MAXIMUM IN, fastener_length: 2.500 INCHES NOMINAL IN, hardness_rating: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-727-8817, 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
2C1240J
NSN: 5305-00-727-8817
FSC: 5305
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
head_styleHEXAGON
head_height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
thread_class2A A
thread_length1.750 INCHES MINIMUM AND 1.938 INCHES MAXIMUM IN
fastener_length2.500 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
minimum_yield_strength85 POUNDS PER SQUARE INCH LBS
nominal_thread_diameter0.750 INCHES IN
minimum_tensile_strength120 POUNDS PER SQUARE INCH LBS
NSN5305-00-727-8817
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2C1240J · 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
•
HEAD STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 16
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
MINIMUM YIELD STRENGTH: 85 POUNDS PER SQUARE INCH LBS
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE,GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD LENGTH: 1.750 INCHES MINIMUM AND 1.938 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNF
TECHNICAL CHARACTERISTICS (FLIS)
HEAD STYLEHEXAGON
THREAD QUANTITY PER INCH16
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM YIELD STRENGTH85 POUNDS PER SQUARE INCH LBS
MATERIAL DOCUMENT AND CLASSIFICATIONSAE,GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD LENGTH1.750 INCHES MINIMUM AND 1.938 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNF
MINIMUM TENSILE STRENGTH120 POUNDS PER SQUARE INCH LBS
NOMINAL THREAD DIAMETER0.750 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
S11220-1CInterchangeable
interchangeable cross-reference
interchangeable
5305007626041Interchangeable
interchangeable cross-reference
interchangeable
18C1240Interchangeable
interchangeable cross-reference
interchangeable
2C1032Interchangeable
Same NIIN cross-reference
interchangeable
5305007278817Interchangeable
Same NIIN cross-reference
interchangeable
MS90726-189Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2C1240J?
2C1240J is a SCREW,CAP,HEXAGON HEAD.
What parts can replace 2C1240J?
There are 7 known substitutes for 2C1240J: S11220-1C, 5305007626041, 18C1240 and 4 more. Substitute compatibility should be verified for your specific system.
Is 2C1240J still available?
2C1240J is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026