PartsTable
Technical Data Sheet

1391/3401D — SCREW,CAP,SOCKET HEAD

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1391/3401D: SCREW,CAP,SOCKET HEAD.

The SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include thread_length: 10.0 MILLIMETERS NOMINAL MM, fastener_length: 10.0 MILLIMETERS NOMINAL MM, precious_material: SILVER, surface_treatment: ZINC AND SILVER OVERALL, end_item_identification: 3930-01-659-8135, nominal_thread_diameter: 10.0 MILLIMETERS MM. This part is cataloged in the U.S.

Government catalog under NSN 5305-01-678-3353, 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
1391/3401D
NSN: 5305-01-678-3353
FSC: 5305 — Screws
CAGE: 0JKF0 — JCB INC. (USA)
SPECIFICATIONS
thread_length10.0 MILLIMETERS NOMINAL MM
fastener_length10.0 MILLIMETERS NOMINAL MM
precious_materialSILVER
surface_treatmentZINC AND SILVER OVERALL
end_item_identification3930-01-659-8135
nominal_thread_diameter10.0 MILLIMETERS MM
thread_series_designatorM
part_name_assigned_by_controlling_agencyCAP SCREW
NSN5305-01-678-3353
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1391/3401D · 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: 10.0 MILLIMETERS NOMINAL MM
•
PRECIOUS MATERIAL: SILVER
•
THREAD LENGTH: 10.0 MILLIMETERS NOMINAL MM
•
NOMINAL THREAD DIAMETER: 10.0 MILLIMETERS MM
•
SURFACE TREATMENT: ZINC AND SILVER OVERALL
•
THREAD SERIES DESIGNATOR: M
TECHNICAL CHARACTERISTICS
FASTENER LENGTH10.0 MILLIMETERS NOMINAL MM
PRECIOUS MATERIALSILVER
THREAD LENGTH10.0 MILLIMETERS NOMINAL MM
NOMINAL THREAD DIAMETER10.0 MILLIMETERS MM
SURFACE TREATMENTZINC AND SILVER OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYCAP SCREW
END ITEM IDENTIFICATION3930-01-659-8135
THREAD SERIES DESIGNATORM
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 1
212380MILSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 1391/3401D?
1391/3401D is a SCREW,CAP,SOCKET HEAD.
What parts can replace 1391/3401D?
There is 1 known substitute for 1391/3401D: 212380MIL. Substitute compatibility should be verified for your specific system.
What is the NSN for 1391/3401D?
1391/3401D is cataloged in the U.S. Government catalog under NSN 5305-01-678-3353. 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.