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Technical Data Sheet
PartsTable / COMPONENT / 1206-390-Z3C
1206-390-Z3C ✓ 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 STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.312 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.900 INCHES NOMINAL IN, shank_neck_length: 0.100 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-281-5087, 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
1206-390-Z3C
NSN: 5325-00-281-5087
FSC: 5325
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
diameter0.312 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.900 INCHES NOMINAL IN
shank_neck_length0.100 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.188 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
nondefinitive_spec/std_data1 TYPE AND 1 STYLE AND A CLASS AND B CLASS AND 2 SIZE
material_accommodated_thickness0.765 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
NSN5325-00-281-5087
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1206-390-Z3C · 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: CADMIUM OVERALL
•
SHANK NECK LENGTH: 0.100 INCHES NOMINAL IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DRIVE TYPE: SLOTTED
•
MATERIAL: STEEL OVERALL
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
STUD SHANK MAJOR DIAMETER: 0.188 INCHES NOMINAL IN
•
DIAMETER: 0.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTCADMIUM OVERALL
SHANK NECK LENGTH0.100 INCHES NOMINAL IN
TURNLOCK STUD SHANK STYLESTUD SHANK
DRIVE TYPESLOTTED
MATERIALSTEEL OVERALL
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
STUD SHANK MAJOR DIAMETER0.188 INCHES NOMINAL IN
DIAMETER0.312 INCHES NOMINAL IN
MATERIAL ACCOMMODATED THICKNESS0.765 INCHES MINIMUM AND 0.790 INCHES MAXIMUM IN
GRIP LENGTH0.900 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
F-390Interchangeable
interchangeable cross-reference
interchangeable
5-1-17Interchangeable
interchangeable cross-reference
interchangeable
5-1-498Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1206-390-Z3C?
1206-390-Z3C is a STUD,TURNLOCK FASTENER.
What parts can replace 1206-390-Z3C?
There are 3 known substitutes for 1206-390-Z3C: F-390, 5-1-17, 5-1-498. Substitute compatibility should be verified for your specific system.
Is 1206-390-Z3C still available?
1206-390-Z3C 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