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Technical Data Sheet
PartsTable / COMPONENT / MS3212-12
MS3212-12 ✓ 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 SCREW,MACHINE is a the manufacturer industrial component. Key specifications include head_style: WATERTIGHT, head_height: 0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.256 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN, thread_length: 0.219 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN, screw_material: STEEL COMP 304 OR STEEL COMP 305. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-520-5568, 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
MS3212-12
NSN: 5305-00-520-5568
FSC: 5305
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
head_styleWATERTIGHT
head_height0.087 INCHES MINIMUM AND 0.097 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.256 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
thread_length0.219 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
screw_materialSTEEL COMP 304 OR STEEL COMP 305
fastener_length0.281 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
features_providedO RING
internal_drive_styleCROSS RECESS TYPE 1
nominal_thread_diameter0.138 INCHES IN
screw_surface_treatmentPASSIVATE
NSN5305-00-520-5568
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MS3212-12 · 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
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
HEAD STYLE: WATERTIGHT
•
THREAD LENGTH: 0.219 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
HEAD DIAMETER: 0.256 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
•
SCREW SURFACE TREATMENT: PASSIVATE
•
THREAD QUANTITY PER INCH: 32
•
INTERNAL DRIVE STYLE: CROSS RECESS TYPE 1
•
NOMINAL THREAD DIAMETER: 0.138 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
HEAD STYLEWATERTIGHT
THREAD LENGTH0.219 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
HEAD DIAMETER0.256 INCHES MINIMUM AND 0.294 INCHES MAXIMUM IN
SCREW SURFACE TREATMENTPASSIVATE
THREAD QUANTITY PER INCH32
INTERNAL DRIVE STYLECROSS RECESS TYPE 1
NOMINAL THREAD DIAMETER0.138 INCHES IN
THREAD DIRECTIONRIGHT-HAND
FEATURES PROVIDEDO RING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
JNR-MInterchangeable
interchangeable cross-reference
interchangeable
HG32Interchangeable
interchangeable cross-reference
interchangeable
R-39-MInterchangeable
interchangeable cross-reference
interchangeable
33220Interchangeable
interchangeable cross-reference
interchangeable
R3220BInterchangeable
interchangeable cross-reference
interchangeable
VX32Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS3212-12?
MS3212-12 is a SCREW,MACHINE.
What parts can replace MS3212-12?
There are 21 known substitutes for MS3212-12: JNR-M, HG32, R-39-M and 18 more. Substitute compatibility should be verified for your specific system.
Is MS3212-12 still available?
MS3212-12 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026