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ST3M851V3-4D — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M851V3-4D: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include material: TITANIUM ALLOY OVERALL, head_style: FLAT COUNTERSUNK UNDERCUT, head_height: 0.032 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN, thread_class: 3A A, head_diameter: 0.377 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN, thread_length: 0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-211-7482, 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
ST3M851V3-4D
NSN: 5305-01-211-7482
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialTITANIUM ALLOY OVERALL
head_styleFLAT COUNTERSUNK UNDERCUT
head_height0.032 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
thread_class3A A
head_diameter0.377 INCHES MINIMUM AND 0.381 INCHES MAXIMUM IN
thread_length0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length0.640 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
shoulder_length0.206 INCHES MINIMUM AND 0.228 INCHES MAXIMUM FIRST SHOULDER IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
shoulder_diameter0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
NSN5305-01-211-7482
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M851V3-4D · 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: 0.032 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.640 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
•
SHOULDER LENGTH: 0.206 INCHES MINIMUM AND 0.228 INCHES MAXIMUM FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4967,COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
•
NOMINAL THREAD DIAMETER: 0.190 INCHES IN
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.032 INCHES MINIMUM AND 0.034 INCHES MAXIMUM IN
FASTENER LENGTH0.640 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN
SHOULDER LENGTH0.206 INCHES MINIMUM AND 0.228 INCHES MAXIMUM FIRST SHOULDER IN
SHOULDER DIAMETER0.2177 INCHES MINIMUM AND 0.2182 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN
SHOULDER SHAPEROUND FIRST SHOULDER
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4967,COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL V
NOMINAL THREAD DIAMETER0.190 INCHES IN
HEAD STYLEFLAT COUNTERSUNK UNDERCUT
THREAD DIRECTIONRIGHT-HAND
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES 2
HT4060V3-4DReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
HT4060V3-4Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 ST3M851V3-4D?
ST3M851V3-4D is a SCREW,SHOULDER.
What parts can replace ST3M851V3-4D?
There are 2 known substitutes for ST3M851V3-4D: HT4060V3-4D, HT4060V3-4. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M851V3-4D?
ST3M851V3-4D is cataloged in the U.S. Government catalog under NSN 5305-01-211-7482. 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.