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Technical Data Sheet
PartsTable / COMPONENT / 7403744
7403744 ✓ 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 COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL, head_style: HEXAGON, grip_length: 1.250 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN, head_height: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.500 INCHES MINIMUM AND 0.530 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 5306-00-281-1014, 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
7403744
NSN: 5306-00-281-1014
FSC: 5306
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 8640 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL
head_styleHEXAGON
grip_length1.250 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
head_height0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
thread_class3A A
thread_length0.500 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
fastener_length1.780 INCHES MINIMUM AND 1.810 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
features_providedFINISHED HEAD
surface_treatmentCADMIUM OR ZINC OVERALL
width_between_flats0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
NSN5306-00-281-1014
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 7403744 · 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 DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
•
THREAD CLASS: 3A A
•
HEAD HEIGHT: 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.500 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
•
HEAD STYLE: HEXAGON
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A547 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A547 ASSN STD 3RD MATERIAL RESPONSE OVERALL
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
THREAD CLASS3A A
HEAD HEIGHT0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM IN
THREAD LENGTH0.500 INCHES MINIMUM AND 0.530 INCHES MAXIMUM IN
HEAD STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A547 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A331 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A547 ASSN STD 3RD MATERIAL RESPONSE OVERALL
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
THREAD SERIES DESIGNATORUNF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 TYPE 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 TYPE 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
401545Interchangeable
interchangeable cross-reference
interchangeable
OSUR-FIT DRAINAGE POUCHInterchangeable
interchangeable cross-reference
interchangeable
41935Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 7403744?
7403744 is a BOLT,MACHINE.
What parts can replace 7403744?
There are 3 known substitutes for 7403744: 401545, OSUR-FIT DRAINAGE POUCH, 41935. Substitute compatibility should be verified for your specific system.
What is the NSN for 7403744?
7403744 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-281-1014. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026