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579344 — STUD,STEPPED

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

579344: STUD,STEPPED.

The STUD,STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8740, thread_class: 3A NUT THREAD A, thread_length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM STUD THREAD IN, overall_length: 0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN, shank_diameter: 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, hardness_rating: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 5307-00-938-8978, 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
579344
NSN: 5307-00-938-8978
FSC: 5307 — Studs
CAGE: 02991 — THOMPSON AEROSPACE, LLC DBA THOMPSON AEROSPACE LLC (USA)
SPECIFICATIONS
materialSTEEL COMP 8740
thread_class3A NUT THREAD A
thread_length0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM STUD THREAD IN
overall_length0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
shank_diameter0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
hardness_rating26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
style_designatorSTEPPED
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.250 INCHES STUD THREAD IN
thread_pitch_diameters+0.2218 TO 0.2233 INCHES STUD THREAD IN
thread_quantity_per_inch32 NUT THREAD
NSN5307-00-938-8978
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 579344 · 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
•
SHANK DIAMETER: 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM STUD THREAD IN
•
HARDNESS RATING: 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: STEPPED
•
THREAD PITCH DIAMETERS: +0.2218 TO 0.2233 INCHES STUD THREAD IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
THREAD LENGTH0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM STUD THREAD IN
THREAD LENGTH0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM NUT THREAD IN
HARDNESS RATING26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSTEPPED
THREAD PITCH DIAMETERS+0.2218 TO 0.2233 INCHES STUD THREAD IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6322 ASSN STD SINGLE MATERIAL RESPONSE
OVERALL LENGTH0.930 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND STUD THREAD
THREAD DIRECTIONRIGHT-HAND NUT THREAD
OTHER ITEMS IN FSC 5307 — Studs
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5307-00-000-6436 5307-00-001-1578 5307-00-001-1761 5307-00-001-2366 5307-00-001-4491 5307-00-001-4624 5307-00-001-4625
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 579344?
579344 is a STUD,STEPPED.
What is the NSN for 579344?
579344 is cataloged in the U.S. Government catalog under NSN 5307-00-938-8978. 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.