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SC1143 — SCREW,MACHINE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SC1143: SCREW,MACHINE.

The SCREW,MACHINE is a the manufacturer industrial component. Key specifications include special_features: WASHER HEAD TYPE T, width_between_flats: 0.500 INCHES NOMINAL IN, internal_drive_style: SLOT, end_item_identification: BODY OF DEEP FAT FRYERS MODEL AK50, AK55, DK50, DK55, CK50 AND CK55, nominal_thread_diameter: 0.190 INCHES IN, thread_quantity_per_inch: 32. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-353-6933, 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
SC1143
NSN: 5305-00-353-6933
NIINs: 003536933, 014740194
FSC: 5305 — Screws
CAGE: 01843 — AMBAC INTERNATIONAL CORPORATION DIV AMBAC INTERNATIONAL (USA)
SPECIFICATIONS
special_featuresWASHER HEAD TYPE T
width_between_flats0.500 INCHES NOMINAL IN
internal_drive_styleSLOT
end_item_identificationBODY OF DEEP FAT FRYERS MODEL AK50, AK55, DK50, DK55, CK50 AND CK55
nominal_thread_diameter0.190 INCHES IN
thread_quantity_per_inch32
thread_series_designatorUNF
NSN5305-00-353-6933
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SC1143 · 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: 0.125 INCHES NOMINAL IN
•
FASTENER LENGTH: 0.375 INCHES NOMINAL IN
•
PRIMARY WASHER OUTSIDE DIAMETER: 0.277 INCHES NOMINAL IN
•
THREAD LENGTH: 0.312 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.164 INCHES IN
•
HEAD STYLE: FILLISTER
•
PRIMARY WASHER STYLE: SPLIT HELICAL RING
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.125 INCHES NOMINAL IN
FASTENER LENGTH0.375 INCHES NOMINAL IN
PRIMARY WASHER OUTSIDE DIAMETER0.277 INCHES NOMINAL IN
THREAD LENGTH0.312 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.164 INCHES IN
HEAD STYLEFILLISTER
PRIMARY WASHER STYLESPLIT HELICAL RING
THREAD DIRECTIONRIGHT-HAND
PRIMARY WASHER MATERIAL THICKNESS0.031 INCHES NOMINAL IN
SPECIAL FEATURESSURFACE TREATMENT IODINE DIPPED
SUBSTITUTES & CROSS-REFERENCES 2
SC1345Reference document
Same NSN cross-reference
Reference document — Secondary reference
6F5661Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SC1143?
SC1143 is a SCREW,MACHINE.
What parts can replace SC1143?
There are 2 known substitutes for SC1143: SC1345, 6F5661. Substitute compatibility should be verified for your specific system.
What is the NSN for SC1143?
SC1143 is cataloged in the U.S. Government catalog under NSN 5305-00-353-6933. 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.