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ST3M494-5D35 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M494-5D35: 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: 0.434 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-191-4571, 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
ST3M494-5D35
NSN: 5306-01-191-4571
FSC: 5306 — Bolts
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleDISHED HEXAGON
head_height0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
thread_class3A A
thread_length0.434 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.632 INCHES MINIMUM AND 2.682 INCHES MAXIMUM IN
hardness_rating24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
NSN5306-01-191-4571
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M494-5D35 · 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: 2.632 INCHES MINIMUM AND 2.682 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.434 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.188 INCHES MINIMUM AND 0.203 INCHES MAXIMUM IN
FASTENER LENGTH2.632 INCHES MINIMUM AND 2.682 INCHES MAXIMUM IN
SHOULDER LENGTH2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.434 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING24.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL
SHANK UNTHREADED HOLE DIAMETER0.076 INCHES MINIMUM AND 0.086 INCHES MAXIMUM FIRST HOLE IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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 3
S11-1065-5D35Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
PBF1263-5D35Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VS3251-5-D-35Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is ST3M494-5D35?
ST3M494-5D35 is a BOLT,SHOULDER.
What parts can replace ST3M494-5D35?
There are 3 known substitutes for ST3M494-5D35: S11-1065-5D35, PBF1263-5D35, VS3251-5-D-35. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M494-5D35?
ST3M494-5D35 is cataloged in the U.S. Government catalog under NSN 5306-01-191-4571. 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.