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VS3191-5-6Y — BOLT,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

VS3191-5-6Y: BOLT,SHOULDER.

The BOLT,SHOULDER is a the manufacturer industrial component. Key specifications include material: STEEL COMP XM-13 OVERALL, head_style: SPLINE DRIVE SHEAR HEAD, head_height: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN, thread_class: 3A A, thread_length: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN, shoulder_shape: ROUND FIRST SHOULDER. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-142-8366, 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
VS3191-5-6Y
NSN: 5306-01-142-8366
FSC: 5306 — Bolts
CAGE: 06950 — HOWMET GLOBAL FASTENING SYSTEMS INC (USA)
SPECIFICATIONS
materialSTEEL COMP XM-13 OVERALL
head_styleSPLINE DRIVE SHEAR HEAD
head_height0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
thread_class3A A
thread_length0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
shoulder_length0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
shoulder_diameter0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
surface_treatmentPASSIVATE OVERALL
width_between_flats0.512 INCHES MINIMUM IN
NSN5306-01-142-8366
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: VS3191-5-6Y · 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: 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
SHOULDER DIAMETER: 0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM IN
FASTENER LENGTH0.826 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN
SHOULDER LENGTH0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM FIRST SHOULDER IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SHOULDER DIAMETER0.3427 INCHES MINIMUM AND 0.3432 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES IN
HEAD STYLESPLINE DRIVE SHEAR HEAD
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 4
122898-5-6Reference document
Same NSN cross-reference
Reference document — Secondary reference
PBF1270-5-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M838-5-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MB160-5-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is VS3191-5-6Y?
VS3191-5-6Y is a BOLT,SHOULDER.
What parts can replace VS3191-5-6Y?
There are 4 known substitutes for VS3191-5-6Y: 122898-5-6, PBF1270-5-6, ST3M838-5-6 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for VS3191-5-6Y?
VS3191-5-6Y is cataloged in the U.S. Government catalog under NSN 5306-01-142-8366. 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.