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ST3M734-5W-4 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

ST3M734-5W-4: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.400 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SOCKET, grip_length: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN, extension_length: 0.361 INCHES NOMINAL IN, surface_treatment: ALUMINUM OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-366-3665, 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
ST3M734-5W-4
NSN: 5325-01-366-3665
FSC: 5325 — Fastening Devices
CAGE: 80539 — SPS TECHNOLOGIES, LLC DBA AEROSPACE FASTENERS GROUP DIV AEROSPACE - SANTA ANA (USA)
SPECIFICATIONS
diameter0.400 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSOCKET
grip_length0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
extension_length0.361 INCHES NOMINAL IN
surface_treatmentALUMINUM OVERALL
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
stud_thread_size_and_series/type_designator0.190-32 UNIFIED NATIONAL JOINT FINE (UNJF)
surface_treatment_document_and_classificationMIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-01-366-3665
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: ST3M734-5W-4 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DRIVE TYPE: SOCKET
•
MATERIAL ACCOMMODATED THICKNESS: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.361 INCHES NOMINAL IN
•
DIAMETER: 0.400 INCHES NOMINAL IN
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
STUD SHANK MAJOR DIAMETER: 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488,TY 2,CL 3 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
DRIVE TYPESOCKET
MATERIAL ACCOMMODATED THICKNESS0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.361 INCHES NOMINAL IN
DIAMETER0.400 INCHES NOMINAL IN
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
STUD SHANK MAJOR DIAMETER0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN
SURFACE TREATMENTALUMINUM OVERALL
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 5
M192014-5K4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
192014-5K4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
ST3M734-5-4Reference document
Same NSN cross-reference
Reference document — Secondary reference
01926-5K4Reference document
Same NSN cross-reference
Reference document — Secondary reference
10119371Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 ST3M734-5W-4?
ST3M734-5W-4 is a STUD,TURNLOCK FASTENER.
What parts can replace ST3M734-5W-4?
There are 5 known substitutes for ST3M734-5W-4: M192014-5K4, 192014-5K4, ST3M734-5-4 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST3M734-5W-4?
ST3M734-5W-4 is cataloged in the U.S. Government catalog under NSN 5325-01-366-3665. 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.