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ST3M494-4D22 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M494-4D22: 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: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.400 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-209-9322, 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
ST3M494-4D22
NSN: 5306-01-209-9322
FSC: 5306 — Bolts
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialIRON ALLOY 660 OVERALL
head_styleDISHED HEXAGON
head_height0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
thread_class3A A
thread_length0.400 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length1.785 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN
shoulder_length1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
width_between_flats0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN
NSN5306-01-209-9322
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M494-4D22 · 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: 0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.785 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.400 INCHES MINIMUM AND 0.450 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 HEIGHT0.156 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN
FASTENER LENGTH1.785 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN
SHOULDER LENGTH1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.400 INCHES MINIMUM AND 0.450 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 1-286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.250 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 3
S11-1065-4D22Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
VS3251-4-D-22Reference document
Same NSN cross-reference
Reference document — Secondary reference
PBF1263-4D22Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 ST3M494-4D22?
ST3M494-4D22 is a BOLT,SHOULDER.
What parts can replace ST3M494-4D22?
There are 3 known substitutes for ST3M494-4D22: S11-1065-4D22, VS3251-4-D-22, PBF1263-4D22. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M494-4D22?
ST3M494-4D22 is cataloged in the U.S. Government catalog under NSN 5306-01-209-9322. 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.