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324858 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

324858: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4037 OR STEEL COMP 8637 OVERALL, head_style: FLAT COUNTERSUNK, thread_class: 2A A, head_diameter: 0.831 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN, thread_length: 0.662 INCHES MINIMUM AND 0.792 INCHES MAXIMUM IN, fastener_length: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-288-0140, 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
324858
NSN: 5305-01-288-0140
NIINs: 012880140, 013106990
FSC: 5305 — Screws
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL COMP 4037 OR STEEL COMP 8637 OVERALL
head_styleFLAT COUNTERSUNK
thread_class2A A
head_diameter0.831 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
thread_length0.662 INCHES MINIMUM AND 0.792 INCHES MAXIMUM IN
fastener_length0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
hardness_rating38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
countersink_angle80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
surface_treatmentZINC AND DICHROMATE OVERALL
internal_drive_styleTORX
spline_major_diameter0.440 INCHES NOMINAL IN
NSN5305-01-288-0140
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 324858 · 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
•
FASTENER LENGTH: 0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.662 INCHES MINIMUM AND 0.792 INCHES MAXIMUM IN
•
HARDNESS RATING: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J770 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SPLINE MAJOR DIAMETER: 0.440 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: FLAT COUNTERSUNK
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
FASTENER LENGTH0.985 INCHES MINIMUM AND 1.015 INCHES MAXIMUM IN
THREAD LENGTH0.662 INCHES MINIMUM AND 0.792 INCHES MAXIMUM IN
HARDNESS RATING38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONSAE J770 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SPLINE MAJOR DIAMETER0.440 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEFLAT COUNTERSUNK
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTZINC AND DICHROMATE OVERALL
INTERNAL DRIVE STYLETORX
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 324858?
324858 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for 324858?
324858 is cataloged in the U.S. Government catalog under NSN 5305-01-288-0140. 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.