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SM-B-544719-31 — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SM-B-544719-31: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include diameter: 0.294 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN, material: STEEL COMP 305 EYELET, drive_type: SLOTTED, stud_diameter: 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN, surface_treatment: PASSIVATE OVERALL, stud_assembly_style: STUD ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-018-7586, 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
SM-B-544719-31
NSN: 5325-00-018-7586
FSC: 5325 — Fastening Devices
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
diameter0.294 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
materialSTEEL COMP 305 EYELET
drive_typeSLOTTED
stud_diameter0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN
surface_treatmentPASSIVATE OVERALL
stud_assembly_styleSTUD ASSEMBLY
securing_device_typeWASHER
eyelet_outside_diameter0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
turnlock_stud_head_styleFILLISTER
material_accommodated_thickness0.425 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
material_document_and_classificationAISI,TYPE 321 ASSN STD SINGLE MATERIAL RESPONSE PIN
surface_treatment_document_and_classificationMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5325-00-018-7586
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SM-B-544719-31 · 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-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
•
EYELET OUTSIDE DIAMETER: 0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
•
DRIVE TYPE: SLOTTED
•
MATERIAL ACCOMMODATED THICKNESS: 0.425 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AISI,TYPE 321 ASSN STD SINGLE MATERIAL RESPONSE PIN
•
DIAMETER: 0.294 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
•
SECURING DEVICE TYPE: WASHER
•
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD: 0.568 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
EYELET OUTSIDE DIAMETER0.344 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN
DRIVE TYPESLOTTED
MATERIAL ACCOMMODATED THICKNESS0.425 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI,TYPE 321 ASSN STD SINGLE MATERIAL RESPONSE PIN
DIAMETER0.294 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
SECURING DEVICE TYPEWASHER
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.568 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEFILLISTER
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 1
530922-77Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 SM-B-544719-31?
SM-B-544719-31 is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace SM-B-544719-31?
There is 1 known substitute for SM-B-544719-31: 530922-77. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-544719-31?
SM-B-544719-31 is cataloged in the U.S. Government catalog under NSN 5325-00-018-7586. 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.