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ST3M838-6-6 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M838-6-6: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: SPLINE DRIVE SHEAR HEAD, thread_length: 0.516 INCHES NOMINAL IN, fastener_length: 1.266 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, thread_series_designator: UNIFIED NATIONAL JOINT FINE (UNJF). This part is cataloged in the U.S.

Government catalog under NSN 5306-01-628-7569, 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
ST3M838-6-6
NSN: 5306-01-628-7569
FSC: 5306 — Bolts
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleSPLINE DRIVE SHEAR HEAD
thread_length0.516 INCHES NOMINAL IN
fastener_length1.266 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF)
part_name_assigned_by_controlling_agencyBOLT, SPLINE DRIVE
NSN5306-01-628-7569
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M838-6-6 · 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
•
FASTENER LENGTH: 1.266 INCHES NOMINAL IN
•
THREAD LENGTH: 0.516 INCHES NOMINAL IN
•
HEAD STYLE: SPLINE DRIVE SHEAR HEAD
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF)
TECHNICAL CHARACTERISTICS
FASTENER LENGTH1.266 INCHES NOMINAL IN
THREAD LENGTH0.516 INCHES NOMINAL IN
HEAD STYLESPLINE DRIVE SHEAR HEAD
SURFACE TREATMENTPASSIVATE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT, SPLINE DRIVE
MATERIALSTEEL CORROSION RESISTING OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
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 ST3M838-6-6?
ST3M838-6-6 is a BOLT,SHOULDER.
What is the NSN for ST3M838-6-6?
ST3M838-6-6 is cataloged in the U.S. Government catalog under NSN 5306-01-628-7569. 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.