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TX1026C4-9F — SCREW,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

TX1026C4-9F: SCREW,CLOSE TOLERANCE.

The SCREW,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 718 OVERALL, head_style: FLAT COUNTERSUNK, grip_length: 0.5525 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN, point_style: FLAT, thread_class: 3A A, grip_diameter: 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-485-5818, 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
TX1026C4-9F
NSN: 5305-01-485-5818
FSC: 5305 — Screws
CAGE: 27624 — SPS TECHNOLOGIES LLC DBA PB FASTENERS DIV PB FASTENERS (USA)
SPECIFICATIONS
materialNICKEL ALLOY 718 OVERALL
head_styleFLAT COUNTERSUNK
grip_length0.5525 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN
point_styleFLAT
thread_class3A A
grip_diameter0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN
head_diameter0.470 INCHES MINIMUM AND 0.477 INCHES MAXIMUM IN
thread_length0.425 INCHES NOMINAL IN
fastener_length0.9725 INCHES MINIMUM AND 1.0025 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
countersink_angle99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
features_providedCETYL ALCOHOL LUBRICANT
NSN5305-01-485-5818
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: TX1026C4-9F · 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
•
SPLINE MINOR DIAMETER: 0.1570 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.9725 INCHES MINIMUM AND 1.0025 INCHES MAXIMUM IN
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SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-C-83488, TYPE II, CLASS 3 MIL SPEC ALL TREATMENT RESPONSES OVERALL
•
THREAD LENGTH: 0.425 INCHES NOMINAL IN
•
CRITICALITY CODE JUSTIFICATION: AGAV
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMC 5662, INCONEL 718 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SPLINE MAJOR DIAMETER: 0.2195 INCHES MINIMUM AND 0.2225 INCHES MAXIMUM IN
•
SINGLE SHEAR STRENGTH: ERR-060
TECHNICAL CHARACTERISTICS
SPLINE MINOR DIAMETER0.1570 INCHES MINIMUM AND 0.1600 INCHES MAXIMUM IN
FASTENER LENGTH0.9725 INCHES MINIMUM AND 1.0025 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-83488, TYPE II, CLASS 3 MIL SPEC ALL TREATMENT RESPONSES OVERALL
THREAD LENGTH0.425 INCHES NOMINAL IN
CRITICALITY CODE JUSTIFICATIONAGAV
MATERIAL DOCUMENT AND CLASSIFICATIONAMC 5662, INCONEL 718 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPLINE MAJOR DIAMETER0.2195 INCHES MINIMUM AND 0.2225 INCHES MAXIMUM IN
SINGLE SHEAR STRENGTHERR-060
NOMINAL THREAD DIAMETER0.250 INCHES IN
FEATURES PROVIDEDCETYL ALCOHOL LUBRICANT
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016 5305-00-001-9160 5305-00-001-9629 5305-00-001-9742 5305-00-001-9768 5305-00-003-4306 5305-00-003-6694 5305-00-003-6753
SUBSTITUTES & CROSS-REFERENCES 1
11827C4-9FSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is TX1026C4-9F?
TX1026C4-9F is a SCREW,CLOSE TOLERANCE.
What parts can replace TX1026C4-9F?
There is 1 known substitute for TX1026C4-9F: 11827C4-9F. Substitute compatibility should be verified for your specific system.
What is the NSN for TX1026C4-9F?
TX1026C4-9F is cataloged in the U.S. Government catalog under NSN 5305-01-485-5818. 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.