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Technical Data Sheet
PartsTable / COMPONENT / VS3038-3-8
VS3038-3-8 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: DOUBLE HEXAGON, head_height: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-046-0502, 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
VS3038-3-8
NSN: 5306-01-046-0502
FSC: 5306
CAGE: 06950 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleDOUBLE HEXAGON
head_height0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
thread_class3A A
thread_length0.305 INCHES MINIMUM AND 0.372 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.815 INCHES MINIMUM AND 0.862 INCHES MAXIMUM IN
shoulder_length0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
width_between_flats0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
nominal_thread_diameter0.190 INCHES IN
NSN5306-01-046-0502
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: VS3038-3-8 · 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
•
WIDTH BETWEEN FLATS: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF)
•
MATERIAL: STEEL OVERALL
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
SHOULDER LENGTH: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
•
FASTENER LENGTH: 0.815 INCHES MINIMUM AND 0.862 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH BETWEEN FLATS0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN
HEAD HEIGHT0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF)
MATERIALSTEEL OVERALL
SHOULDER SHAPEROUND FIRST SHOULDER
SHOULDER LENGTH0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
FASTENER LENGTH0.815 INCHES MINIMUM AND 0.862 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA76301-ST3-507 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
70073Interchangeable
interchangeable cross-reference
interchangeable
119-2138Interchangeable
interchangeable cross-reference
interchangeable
BM17019-3-8YInterchangeable
Same NIIN cross-reference
interchangeable
MA5507-3-8Interchangeable
Same NIIN cross-reference
interchangeable
109451-3-8Interchangeable
Same NIIN cross-reference
interchangeable
ST3M507-3-8Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is VS3038-3-8?
VS3038-3-8 is a BOLT,SHOULDER.
What parts can replace VS3038-3-8?
There are 6 known substitutes for VS3038-3-8: 70073, 119-2138, BM17019-3-8Y and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for VS3038-3-8?
VS3038-3-8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-046-0502. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026