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ST3M729-10D55 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M729-10D55: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON, grip_length: 3.428 INCHES MINIMUM AND 3.448 INCHES MAXIMUM IN, head_height: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-076-3168, 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
ST3M729-10D55
NSN: 5306-01-076-3168
FSC: 5306 — Bolts
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON
grip_length3.428 INCHES MINIMUM AND 3.448 INCHES MAXIMUM IN
head_height0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.6235 INCHES MINIMUM AND 0.6240 INCHES MAXIMUM IN
thread_length0.517 INCHES MINIMUM AND 0.584 INCHES MAXIMUM IN
fastener_length3.965 INCHES MINIMUM AND 4.012 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.928 INCHES MINIMUM AND 0.940 INCHES MAXIMUM IN
end_item_identificationAIRCRAFT, EAGLE F-15
nominal_thread_diameter0.625 INCHES IN
NSN5306-01-076-3168
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M729-10D55 · 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: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.965 INCHES MINIMUM AND 4.012 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.517 INCHES MINIMUM AND 0.584 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: 23-112,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN
FASTENER LENGTH3.965 INCHES MINIMUM AND 4.012 INCHES MAXIMUM IN
THREAD LENGTH0.517 INCHES MINIMUM AND 0.584 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.141 INCHES MINIMUM AND 0.146 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATION23-112,FSCM 76301 MFR REF SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.625 INCHES IN
HEAD STYLEDOUBLE HEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA76301-ST3-729 MANUFACTURERS STANDARD
GRIP LENGTH3.428 INCHES MINIMUM AND 3.448 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 5306 — Bolts
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5306-00-001-1276 5306-00-001-1949 5306-00-001-1988 5306-00-001-1989 5306-00-001-1990 5306-00-001-1991 5306-00-001-1993 5306-00-001-2017
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 ST3M729-10D55?
ST3M729-10D55 is a BOLT,CLOSE TOLERANCE.
What is the NSN for ST3M729-10D55?
ST3M729-10D55 is cataloged in the U.S. Government catalog under NSN 5306-01-076-3168. 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.