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CTS230A — THUMBSCREW

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

CTS230A: THUMBSCREW.

The THUMBSCREW is a the manufacturer industrial component. Key specifications include head_height: 0.500 INCHES NOMINAL IN, thread_class: 2A A, special_features: APPLY BLACK OXIDE FINISH PER SPEC MIL-C-13924A A, thread_direction: RIGHT-HAND, width_between_flats: 1.250 INCHES NOMINAL IN, end_item_identification: RUDDER INS KI. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-471-8366, 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
CTS230A
NSN: 5305-01-471-8366
FSC: 5305 — Screws
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
head_height0.500 INCHES NOMINAL IN
thread_class2A A
special_featuresAPPLY BLACK OXIDE FINISH PER SPEC MIL-C-13924A A
thread_directionRIGHT-HAND
width_between_flats1.250 INCHES NOMINAL IN
end_item_identificationRUDDER INS KI
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch13
NSN5305-01-471-8366
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: CTS230A · 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
•
HEAD HEIGHT: 0.500 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
WIDTH BETWEEN FLATS: 1.250 INCHES NOMINAL IN
•
THREAD CLASS: 2A A
•
THREAD QUANTITY PER INCH: 13
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.500 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS1.250 INCHES NOMINAL IN
SPECIAL FEATURESAPPLY BLACK OXIDE FINISH PER SPEC MIL-C-13924A A
THREAD CLASS2A A
END ITEM IDENTIFICATIONRUDDER INS KI
THREAD QUANTITY PER INCH13
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

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 CTS230A?
CTS230A is a THUMBSCREW.
What is the NSN for CTS230A?
CTS230A is cataloged in the U.S. Government catalog under NSN 5305-01-471-8366. 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.