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HS4431-9 — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

HS4431-9: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include material: STEEL COMP 4027 STUD, drive_type: SLOTTED, eyelet_length: 0.322 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL, stud_assembly_style: STUD ASSEMBLY, eyelet_outside_diameter: 0.315 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-585-8105, 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
HS4431-9
NSN: 5325-01-585-8105
FSC: 5325 — Fastening Devices
CAGE: 8V613 — THE BOEING COMPANY (USA)
SPECIFICATIONS
materialSTEEL COMP 4027 STUD
drive_typeSLOTTED
eyelet_length0.322 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
stud_assembly_styleSTUD ASSEMBLY
eyelet_outside_diameter0.315 INCHES NOMINAL IN
turnlock_stud_head_styleSTUD HEAD
part_name_assigned_by_controlling_agencyFASTENER, STUD, TURNLOCK, QUARTER TURN
NSN5325-01-585-8105
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: HS4431-9 · 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
•
EYELET OUTSIDE DIAMETER: 0.315 INCHES NOMINAL IN
•
DRIVE TYPE: SLOTTED
•
TURNLOCK STUD HEAD STYLE: STUD HEAD
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL COMP 4027 STUD
•
STUD ASSEMBLY STYLE: STUD ASSEMBLY
•
EYELET LENGTH: 0.322 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
EYELET OUTSIDE DIAMETER0.315 INCHES NOMINAL IN
DRIVE TYPESLOTTED
TURNLOCK STUD HEAD STYLESTUD HEAD
SURFACE TREATMENTCADMIUM OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYFASTENER, STUD, TURNLOCK, QUARTER TURN
MATERIALSTEEL COMP 4027 STUD
STUD ASSEMBLY STYLESTUD ASSEMBLY
EYELET LENGTH0.322 INCHES NOMINAL IN
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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is HS4431-9?
HS4431-9 is a STUD ASSEMBLY,TURNLOCK FASTENER.
What is the NSN for HS4431-9?
HS4431-9 is cataloged in the U.S. Government catalog under NSN 5325-01-585-8105. 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.