PartsTable
Technical Data Sheet
Download PDF

ST3M494-5D33 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M494-5D33: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: IRON ALLOY 660 OVERALL, head_style: DISHED HEXAGON, head_height: 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-189-7403, 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
ST3M494-5D33
NSN: 5306-01-189-7403
FSC: 5306 — Bolts
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleDISHED HEXAGON
head_height0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
thread_class3A A
thread_length0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.516 INCHES MINIMUM AND 2.546 INCHES MAXIMUM IN
shoulder_length2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
width_between_flats0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN
NSN5306-01-189-7403
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M494-5D33 · 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: 0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
•
FASTENER LENGTH: 2.516 INCHES MINIMUM AND 2.546 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
SHANK UNTHREADED HOLE DIAMETER: 0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
FASTENER LENGTH2.516 INCHES MINIMUM AND 2.546 INCHES MAXIMUM IN
SHOULDER LENGTH2.052 INCHES MINIMUM AND 2.072 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.444 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES 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 1
VS3251-5-D-33Reference 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
Ready to buy ST3M494-5D33?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is ST3M494-5D33?
ST3M494-5D33 is a BOLT,SHOULDER.
What parts can replace ST3M494-5D33?
There is 1 known substitute for ST3M494-5D33: VS3251-5-D-33. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M494-5D33?
ST3M494-5D33 is cataloged in the U.S. Government catalog under NSN 5306-01-189-7403. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — ST3M494-5D33

✓ 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.