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K0580 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

K0580: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1345 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL, head_style: HEXAGON, head_height: 0.370 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 1.000 INCHES NOMINAL IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-062-0850, 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
K0580
NSN: 5306-01-062-0850
FSC: 5306 — Bolts
CAGE: G0768 — KANAKAS TH. & G. O.E (GRC)
SPECIFICATIONS
materialSTEEL COMP 1345 OR STEEL COMP 4130 OR STEEL COMP 4140 OVERALL
head_styleHEXAGON
head_height0.370 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
thread_class2A A
thread_length1.000 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length3.625 INCHES NOMINAL IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
shoulder_length0.900 INCHES MINIMUM AND 0.950 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.6677 INCHES MINIMUM AND 0.6687 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
NSN5306-01-062-0850
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: K0580 · 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: 0.370 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.625 INCHES NOMINAL IN
•
SHOULDER LENGTH: 0.900 INCHES MINIMUM AND 0.950 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.6677 INCHES MINIMUM AND 0.6687 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 1.000 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.370 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN
FASTENER LENGTH3.625 INCHES NOMINAL IN
SHOULDER LENGTH0.900 INCHES MINIMUM AND 0.950 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.6677 INCHES MINIMUM AND 0.6687 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH1.000 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.625 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 2
SNRG.M113.0505.012Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
12253628Reference document
Same NSN cross-reference
Reference document — NATO reproduction reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is K0580?
K0580 is a BOLT,SHOULDER.
What parts can replace K0580?
There are 2 known substitutes for K0580: SNRG.M113.0505.012, 12253628. Substitute compatibility should be verified for your specific system.
What is the NSN for K0580?
K0580 is cataloged in the U.S. Government catalog under NSN 5306-01-062-0850. 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.