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SII 1058-6-1270 — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SII 1058-6-1270: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP H11 OVERALL, head_style: HEXAGON, head_height: 0.152 INCHES MINIMUM AND 0.184 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.261 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN, shoulder_shape: ROUND ALL SHOULDERS. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-337-2299, 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
SII 1058-6-1270
NSN: 5306-01-337-2299
FSC: 5306 — Bolts
CAGE: 57928 — SONIC INDUSTRIES, INC. DBA SONIC INDUSTRIES INC DIV SONIC INDUSTRIES (USA)
SPECIFICATIONS
materialSTEEL COMP H11 OVERALL
head_styleHEXAGON
head_height0.152 INCHES MINIMUM AND 0.184 INCHES MAXIMUM IN
thread_class3A A
thread_length0.261 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
shoulder_shapeROUND ALL SHOULDERS
fastener_length1.635 INCHES MINIMUM AND 1.655 INCHES MAXIMUM IN
shoulder_length1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM ALL SHOULDERS IN
thread_directionRIGHT-HAND
shoulder_diameter0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM ALL SHOULDERS IN
surface_treatmentCADMIUM OVERALL
width_between_flats0.497 INCHES NOMINAL IN
NSN5306-01-337-2299
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SII 1058-6-1270 · 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: 0.152 INCHES MINIMUM AND 0.184 INCHES MAXIMUM IN
•
FASTENER LENGTH: 1.635 INCHES MINIMUM AND 1.655 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM ALL SHOULDERS IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: NAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM ALL SHOULDERS IN
•
THREAD LENGTH: 0.261 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND ALL SHOULDERS
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 6485 (H-11) ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.152 INCHES MINIMUM AND 0.184 INCHES MAXIMUM IN
FASTENER LENGTH1.635 INCHES MINIMUM AND 1.655 INCHES MAXIMUM IN
SHOULDER LENGTH1.260 INCHES MINIMUM AND 1.280 INCHES MAXIMUM ALL SHOULDERS IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONNAS 672 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.374 INCHES MINIMUM AND 0.375 INCHES MAXIMUM ALL SHOULDERS IN
THREAD LENGTH0.261 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
SHOULDER SHAPEROUND ALL SHOULDERS
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 6485 (H-11) ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.313 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 2
BH4356-6-1270Reference document
Same NSN cross-reference
Reference document — Secondary reference
5306-001-6-1270Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SII 1058-6-1270?
SII 1058-6-1270 is a BOLT,SHOULDER.
What parts can replace SII 1058-6-1270?
There are 2 known substitutes for SII 1058-6-1270: BH4356-6-1270, 5306-001-6-1270. Substitute compatibility should be verified for your specific system.
What is the NSN for SII 1058-6-1270?
SII 1058-6-1270 is cataloged in the U.S. Government catalog under NSN 5306-01-337-2299. 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.