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M192012-4-3 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

M192012-4-3: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.3464 INCHES MINIMUM AND 0.3553 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING OVERALL, drive_type: SOCKET, grip_length: 0.1653 INCHES NOMINAL IN, extension_length: 0.3827 INCHES NOMINAL IN, stud_head_height: 0.0194 INCHES MINIMUM AND 0.0240 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-024-9883, 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
M192012-4-3
NSN: 5325-01-024-9883
FSC: 5325 — Fastening Devices
CAGE: 16258 — SPACE-LOK, INC. DBA SPACE-LOK INC DIV SPACE-LOK (USA)
SPECIFICATIONS
diameter0.3464 INCHES MINIMUM AND 0.3553 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING OVERALL
drive_typeSOCKET
grip_length0.1653 INCHES NOMINAL IN
extension_length0.3827 INCHES NOMINAL IN
stud_head_height0.0194 INCHES MINIMUM AND 0.0240 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
securing_device_typeRING
turnlock_stud_head_styleFLAT FILLISTER
stud_shank_major_diameter0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_document_and_classificationASTM A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5325-01-024-9883
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M192012-4-3 · 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
•
DRIVE TYPE: SOCKET
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.3827 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
DIAMETER: 0.3464 INCHES MINIMUM AND 0.3553 INCHES MAXIMUM IN
•
STUD HEAD HEIGHT: 0.0194 INCHES MINIMUM AND 0.0240 INCHES MAXIMUM IN
•
SECURING DEVICE TYPE: RING
•
TURNLOCK STUD HEAD STYLE: FLAT FILLISTER
TECHNICAL CHARACTERISTICS
DRIVE TYPESOCKET
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.3827 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A286 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
DIAMETER0.3464 INCHES MINIMUM AND 0.3553 INCHES MAXIMUM IN
STUD HEAD HEIGHT0.0194 INCHES MINIMUM AND 0.0240 INCHES MAXIMUM IN
SECURING DEVICE TYPERING
TURNLOCK STUD HEAD STYLEFLAT FILLISTER
STUD SHANK MAJOR DIAMETER0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 3
192012-4-3Reference document
Same NSN cross-reference
Reference document — Secondary reference
3M303C4W3Reference document
Same NSN cross-reference
Reference document — Secondary reference
3M303C4-3Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 M192012-4-3?
M192012-4-3 is a STUD,TURNLOCK FASTENER.
What parts can replace M192012-4-3?
There are 3 known substitutes for M192012-4-3: 192012-4-3, 3M303C4W3, 3M303C4-3. Substitute compatibility should be verified for your specific system.
What is the NSN for M192012-4-3?
M192012-4-3 is cataloged in the U.S. Government catalog under NSN 5325-01-024-9883. 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.