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ST6Z5-30-8 — BOLT,INTERNAL WRENCHING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST6Z5-30-8: BOLT,INTERNAL WRENCHING.

The BOLT,INTERNAL WRENCHING is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, head_height: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, thread_length: 0.423 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES THREADS. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-402-8829, 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
ST6Z5-30-8
NSN: 5306-00-402-8829
FSC: 5306 — Bolts
CAGE: 04614 — TEXTRON SYSTEMS CORPORATION DBA TEXTRON SYSTEMS CORP (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
head_height0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.306 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
thread_length0.423 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES THREADS
fastener_length0.485 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_across_flats0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.190 INCHES IN
minimum_tensile_strength160000 POUNDS PER SQUARE INCH LBS
NSN5306-00-402-8829
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST6Z5-30-8 · 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
•
SURFACE FINISH: 32.0 MICROINCHES THREADS
•
WIDTH ACROSS FLATS: 0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.485 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.423 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: NAS621 COMP 6AL-4V ASSN STD ALL MATERIAL RESPONSES OVERALL V
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES THREADS
SURFACE FINISH32.0 MICROINCHES BEARING SURFACE OF HEAD
WIDTH ACROSS FLATS0.156 INCHES MINIMUM AND 0.158 INCHES MAXIMUM IN
HEAD HEIGHT0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
FASTENER LENGTH0.485 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
THREAD LENGTH0.423 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONNAS621 COMP 6AL-4V ASSN STD ALL MATERIAL RESPONSES OVERALL V
NOMINAL THREAD DIAMETER0.190 INCHES IN
THREAD DIRECTIONRIGHT-HAND
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH LBS
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
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST6Z5-30-8?
ST6Z5-30-8 is a BOLT,INTERNAL WRENCHING.
What is the NSN for ST6Z5-30-8?
ST6Z5-30-8 is cataloged in the U.S. Government catalog under NSN 5306-00-402-8829. 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.