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CA18333-1 — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

CA18333-1: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include grip_length: 0.430 INCHES NOMINAL IN, extension_length: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN, stud_head_height: 0.545 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN, surface_treatment: PASSIVATE BARREL, width_across_flats: 0.385 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN, turnlock_stud_head_style: HEXAGON COUNTERSUNK. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-429-4914, 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
CA18333-1
NSN: 5325-01-429-4914
FSC: 5325 — Fastening Devices
CAGE: 29372 — HOWMET GLOBAL FASTENING SYSTEMS INC. DIV TRIDAIR PRODUCTS (USA)
SPECIFICATIONS
materialSTEEL COMP 301 AND STEEL COMP 302 AND STEEL COMP 303 AND STEEL COMP 303CU AND STEEL COMP 303MA AND STEEL COMP 303SE AND STEEL COMP 304 AND STEEL COMP 305 AND STEEL COMP 316 BARREL
grip_length0.430 INCHES NOMINAL IN
extension_length0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
special_featuresSTUD HEAD IS .156 HEX RECESS TO DEPTH SHOWN .270-.330 DIS. X 120 DEGREES C'SINK, STUD SHANK .040 WIDE X .026 DEEP SPLINES 120 DEGREES APART 3 PLCS.. THSD .1640-32UNC-3B , 4 LEAD THD.
stud_head_height0.545 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
surface_treatmentPASSIVATE BARREL
width_across_flats0.385 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
turnlock_stud_head_styleHEXAGON COUNTERSUNK
stud_shank_major_diameter0.2470 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
stud_thread_size_and_series/type_designator0.1640-32 UNIFIED NATIONAL COARSE (UNC)
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BARREL
NSN5325-01-429-4914
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: CA18333-1 · 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
•
WIDTH ACROSS FLATS: 0.385 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BARREL
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
EXTENSION LENGTH: 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
•
STUD HEAD HEIGHT: 0.545 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
•
TURNLOCK STUD HEAD STYLE: HEXAGON COUNTERSUNK
•
STUD SHANK MAJOR DIAMETER: 0.2470 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.385 INCHES MINIMUM AND 0.475 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BARREL
TURNLOCK STUD SHANK STYLESTUD SHANK
EXTENSION LENGTH0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM IN
STUD HEAD HEIGHT0.545 INCHES MINIMUM AND 0.575 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEHEXAGON COUNTERSUNK
STUD SHANK MAJOR DIAMETER0.2470 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
SPECIAL FEATURESSTUD HEAD IS .156 HEX RECESS TO DEPTH SHOWN .270-.330 DIS. X 120 DEGREES C'SINK, STUD SHANK .040 WIDE X .026 DEEP SPLINES 120 DEGREES APART 3 PLCS.. THSD .1640-32UNC-3B , 4 LEAD THD.
SURFACE TREATMENTPASSIVATE BARREL
MATERIALSTEEL COMP 301 AND STEEL COMP 302 AND STEEL COMP 303 AND STEEL COMP 303CU AND STEEL COMP 303MA AND STEEL COMP 303SE AND STEEL COMP 304 AND STEEL COMP 305 AND STEEL COMP 316 BARREL
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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is CA18333-1?
CA18333-1 is a STUD,TURNLOCK FASTENER.
What is the NSN for CA18333-1?
CA18333-1 is cataloged in the U.S. Government catalog under NSN 5325-01-429-4914. 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.