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S963A4-14 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

S963A4-14: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 3A A, head_diameter: 0.502 INCHES NOMINAL IN, thread_length: 0.455 INCHES MINIMUM IN, fastener_length: 1.330 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-558-7375, 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
S963A4-14
NSN: 5305-00-558-7375
FSC: 5305 — Screws
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleFLAT COUNTERSUNK
thread_class3A A
head_diameter0.502 INCHES NOMINAL IN
thread_length0.455 INCHES MINIMUM IN
fastener_length1.330 INCHES NOMINAL IN
thread_directionRIGHT-HAND
countersink_angle100.0 DEGREES NOMINAL
surface_treatmentCADMIUM OVERALL
width_across_flats0.157 INCHES NOMINAL IN
internal_drive_styleHEXAGON
nominal_thread_diameter0.250 INCHES IN
NSN5305-00-558-7375
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: S963A4-14 · 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: 0.157 INCHES NOMINAL IN
•
FASTENER LENGTH: 1.330 INCHES NOMINAL IN
•
THREAD LENGTH: 0.455 INCHES MINIMUM IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.157 INCHES NOMINAL IN
FASTENER LENGTH1.330 INCHES NOMINAL IN
THREAD LENGTH0.455 INCHES MINIMUM IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
MINIMUM TENSILE STRENGTH160000 POUNDS PER SQUARE INCH LBS
INTERNAL DRIVE STYLEHEXAGON
COUNTERSINK ANGLE100.0 DEGREES NOMINAL
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

No substitute or cross-reference records for this part.

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 S963A4-14?
S963A4-14 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for S963A4-14?
S963A4-14 is cataloged in the U.S. Government catalog under NSN 5305-00-558-7375. 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.