PartsTable
Technical Data Sheet

SPA/USMC4X8 — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

SPA/USMC4X8: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include end_item_identification: 5855-01-526-4703, part_name_assigned_by_controlling_agency: SOCKET HEAD SCREW, 4X8. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-537-7535, 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
SPA/USMC4X8
NSN: 5305-01-537-7535
FSC: 5305 — Screws
CAGE: 1G6Y3 — S P A SIMRAD INC DBA SOUTHERN PRECISION ARMORY DIV SPA DEFENSE (USA)
SPECIFICATIONS
end_item_identification5855-01-526-4703
part_name_assigned_by_controlling_agencySOCKET HEAD SCREW, 4X8
NSN5305-01-537-7535
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: SPA/USMC4X8 · 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
TECHNICAL CHARACTERISTICS
PART NAME ASSIGNED BY CONTROLLING AGENCYSOCKET HEAD SCREW, 4X8
END ITEM IDENTIFICATION5855-01-526-4703
OTHER ITEMS IN FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-000-0094 5305-00-000-1397 5305-00-000-2625 5305-00-000-3669 5305-00-000-3830 5305-00-000-3831
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SPA/USMC4X8?
SPA/USMC4X8 is a SCREW,CAP,SOCKET HEAD.
What is the NSN for SPA/USMC4X8?
SPA/USMC4X8 is cataloged in the U.S. Government catalog under NSN 5305-01-537-7535. 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.