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3043T649 — BOLT,U

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3043T649: BOLT,U.

The BOLT,U is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 2A A, thread_length: 1.375 INCHES NOMINAL IN, special_features: FURNISHED WITH TWO NUTS AND ONE PLATE, style_designator: ROUND BEND, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-156-3737, 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
3043T649
NSN: 5306-01-156-3737
FSC: 5306 — Bolts
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class2A A
thread_length1.375 INCHES NOMINAL IN
special_featuresFURNISHED WITH TWO NUTS AND ONE PLATE
style_designatorROUND BEND
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
nominal_thread_diameter0.312 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
inside_distance_between_shanks1.000 INCHES NOMINAL IN
distance_from_inside_center_of_bend_to_bolt_end2.188 INCHES NOMINAL IN
NSN5306-01-156-3737
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3043T649 · 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
•
INSIDE DISTANCE BETWEEN SHANKS: 1.000 INCHES NOMINAL IN
•
THREAD LENGTH: 1.375 INCHES NOMINAL IN
•
DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END: 2.188 INCHES NOMINAL IN
•
STYLE DESIGNATOR: ROUND BEND
•
NOMINAL THREAD DIAMETER: 0.312 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
INSIDE DISTANCE BETWEEN SHANKS1.000 INCHES NOMINAL IN
THREAD LENGTH1.375 INCHES NOMINAL IN
DISTANCE FROM INSIDE CENTER OF BEND TO BOLT END2.188 INCHES NOMINAL IN
STYLE DESIGNATORROUND BEND
NOMINAL THREAD DIAMETER0.312 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SPECIAL FEATURESFURNISHED WITH TWO NUTS AND ONE PLATE
SURFACE TREATMENTZINC OVERALL
THREAD CLASS2A A
THREAD QUANTITY PER INCH18
SUBSTITUTES & CROSS-REFERENCES 1
3043T63Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3043T649?
3043T649 is a BOLT,U.
What parts can replace 3043T649?
There is 1 known substitute for 3043T649: 3043T63. Substitute compatibility should be verified for your specific system.
What is the NSN for 3043T649?
3043T649 is cataloged in the U.S. Government catalog under NSN 5306-01-156-3737. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.