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Technical Data Sheet
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TA1043 — BOLT,EXTERNALLY RELIEVED BODY

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

TA1043: BOLT,EXTERNALLY RELIEVED BODY.

The BOLT,EXTERNALLY RELIEVED BODY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4140 OVERALL, head_style: HEXAGON, head_height: 0.688 INCHES NOMINAL IN, thread_class: 3A A, thread_length: 0.812 INCHES MAXIMUM IN, fastener_length: 5.500 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-734-8262, 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
TA1043
NSN: 5306-00-734-8262
FSC: 5306 — Bolts
CAGE: 81921 — PACIFIC CAR AND FOUNDRY CO STRUCTURAL STEEL DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 4140 OVERALL
head_styleHEXAGON
head_height0.688 INCHES NOMINAL IN
thread_class3A A
thread_length0.812 INCHES MAXIMUM IN
fastener_length5.500 INCHES MAXIMUM IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
width_between_flats2.188 INCHES NOMINAL IN
nominal_thread_diameter1.500 INCHES IN
first_diameter_from_head1.747 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
thread_quantity_per_inch12
NSN5306-00-734-8262
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TA1043 · 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 HEIGHT: 0.688 INCHES NOMINAL IN
•
FASTENER LENGTH: 5.500 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.812 INCHES MAXIMUM IN
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
•
SHANK UNTHREADED HOLE DIAMETER: 0.188 INCHES NOMINAL FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
FIRST DIAMETER FROM HEAD: 1.747 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
•
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER: 4.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.688 INCHES NOMINAL IN
FASTENER LENGTH5.500 INCHES MAXIMUM IN
THREAD LENGTH0.812 INCHES MAXIMUM IN
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.188 INCHES NOMINAL FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
FIRST DIAMETER FROM HEAD1.747 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER4.500 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER1.500 INCHES IN
HEAD STYLEHEXAGON
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-004-7044 5306-00-007-6129 5306-00-008-7899 5306-00-009-4739 5306-00-118-7332 5306-00-151-1777 5306-00-255-4507 5306-01-101-2459
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TA1043?
TA1043 is a BOLT,EXTERNALLY RELIEVED BODY.
What is the NSN for TA1043?
TA1043 is cataloged in the U.S. Government catalog under NSN 5306-00-734-8262. This indicates validated use in U.S. government and defense supply chains.
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