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3C3859 — SCREW,SHOULDER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

3C3859: SCREW,SHOULDER.

The SCREW,SHOULDER is a the manufacturer industrial component. Key specifications include width: 0.625 INCHES NOMINAL IN, height: 0.312 INCHES NOMINAL IN, material: STEEL COMP 4130 OR STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 4142 OVERALL, head_style: FILLISTER COUNTERSUNK, head_height: 0.250 INCHES NOMINAL IN, thread_class: 2A A. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-496-3023, 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
3C3859
NSN: 5305-01-496-3023
NIINs: 014963023, 014972246
FSC: 5305 — Screws
CAGE: 66464 — GENERAL ELECTRIC CO (USA)
SPECIFICATIONS
width0.625 INCHES NOMINAL IN
height0.312 INCHES NOMINAL IN
materialSTEEL COMP 4130 OR STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 4142 OVERALL
head_styleFILLISTER COUNTERSUNK
head_height0.250 INCHES NOMINAL IN
thread_class2A A
hole_diameter0.312 INCHES NOMINAL IN
thread_length0.630 INCHES NOMINAL IN
shoulder_shapeROUND FIRST SHOULDER
fastener_length2.380 INCHES NOMINAL IN
shoulder_length1.750 INCHES NOMINAL FIRST SHOULDER IN
effective_height0.125 INCHES NOMINAL IN
NSN5305-01-496-3023
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3C3859 · 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: 0.250 INCHES NOMINAL IN
•
FASTENER LENGTH: 2.380 INCHES NOMINAL IN
•
SHOULDER LENGTH: 1.750 INCHES NOMINAL FIRST SHOULDER IN
•
SHOULDER DIAMETER: 0.2705 INCHES MINIMUM AND 0.2710 INCHES MAXIMUM FIRST SHOULDER IN
•
THREAD LENGTH: 0.630 INCHES NOMINAL IN
•
SHOULDER SHAPE: ROUND FIRST SHOULDER
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: FILLISTER COUNTERSUNK
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.250 INCHES NOMINAL IN
FASTENER LENGTH2.380 INCHES NOMINAL IN
SHOULDER LENGTH1.750 INCHES NOMINAL FIRST SHOULDER IN
SHOULDER DIAMETER0.2705 INCHES MINIMUM AND 0.2710 INCHES MAXIMUM FIRST SHOULDER IN
THREAD LENGTH0.630 INCHES NOMINAL IN
SHOULDER SHAPEROUND FIRST SHOULDER
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEFILLISTER COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
INTERNAL DRIVE STYLESLOT
SUBSTITUTES & CROSS-REFERENCES 1
3C3859P43Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 3C3859?
3C3859 is a SCREW,SHOULDER.
What parts can replace 3C3859?
There is 1 known substitute for 3C3859: 3C3859P43. Substitute compatibility should be verified for your specific system.
What is the NSN for 3C3859?
3C3859 is cataloged in the U.S. Government catalog under NSN 5305-01-496-3023. 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.