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346821 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

346821: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 601 OVERALL, head_style: HEXAGON, head_height: 0.156 INCHES NOMINAL IN, thread_length: 0.656 INCHES MINIMUM IN, shoulder_shape: ROUND FIRST SHOULDER, fastener_length: 0.656 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-576-1365, 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
346821
NSN: 5306-00-576-1365
FSC: 5306 — Bolts
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 601 OVERALL
head_styleHEXAGON
head_height0.156 INCHES NOMINAL IN
thread_length0.656 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.656 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.110 INCHES NOMINAL FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.300 INCHES NOMINAL FIRST SHOULDER IN
surface_treatmentNICKEL AND CADMIUM OVERALL
width_between_flats0.497 INCHES NOMINAL IN
NSN5306-00-576-1365
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 346821 · 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 NOMINAL IN
•
FASTENER LENGTH: 0.656 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.110 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.300 INCHES NOMINAL FIRST SHOULDER IN
•
THREAD LENGTH: 0.656 INCHES MINIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.156 INCHES NOMINAL IN
FASTENER LENGTH0.656 INCHES NOMINAL IN
SHOULDER LENGTH0.110 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.300 INCHES NOMINAL FIRST SHOULDER IN
THREAD LENGTH0.656 INCHES MINIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONAMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEHEXAGON
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 346821?
346821 is a BOLT,SHOULDER.
What is the NSN for 346821?
346821 is cataloged in the U.S. Government catalog under NSN 5306-00-576-1365. This indicates validated use in U.S. government and defense supply chains.
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