PartsTable TECHNICAL DATA SHEET
NSN 5305-01-666-1441Government record, cited

Screw, Cap, Socket Head5305-01-666-1441

NSN 5305-01-666-1441 · NIIN 016661441 · Part number 3995AS1502-9
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier · FSC 5305 — Screws · FSG 53 — Hardware and Abrasives · CAGE 30003
Government record, cited
NSN 5305-01-666-1441 — this item is cataloged by the U.S. Government under National Stock Number 5305-01-666-1441. Manufacturer of record part number: 3995AS1502-9.
Also searched as  5305-01-666-1441 · 5305016661441 · NIIN 016661441 · 01-666-1441 · FSC 5305 Screws · CAGE 30003 · 3995AS1502-9 · ISO4762-M5X25
Nearby stock numbers  ·
Features
  • Screw,cap,socket Head — FSC 5305
  • Width Across Flats: 4.0 MILLIMETERS NOMINAL MM
  • Head Height: 5.0 MILLIMETERS NOMINAL MM
  • Fastener Length: 25.0 MILLIMETERS NOMINAL MM
  • Surface Treatment Document and Classification: MIL-DTL-13924D, CLASS III MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
  • Thread Length: 25.0 MILLIMETERS NOMINAL MM
  • Nominal Thread Diameter: 5.0 MILLIMETERS MM
  • Head Style: PAN NO. 2
Identification
  • NSN: 5305-01-666-1441
  • NIIN: 016661441
  • FSC: 5305 — Screws
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 3995AS1502-9
  • Manufacturer: Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
General Description

The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-666-1441, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5305-01-666-1441
Primary Part Number3995AS1502-9
Item NameScrew,cap,socket Head
FSC / FSG5305 / 53 — Screws
ManufacturerNaval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
StatusACTIVE
Width Across Flats4.0 MILLIMETERS NOMINAL MM
Head Height5.0 MILLIMETERS NOMINAL MM
Fastener Length25.0 MILLIMETERS NOMINAL MM
Surface Treatment Document and ClassificationMIL-DTL-13924D, CLASS III MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Thread Length25.0 MILLIMETERS NOMINAL MM
Nominal Thread Diameter5.0 MILLIMETERS MM
Head StylePAN NO. 2
Thread DirectionRIGHT-HAND
ColorBLACK OVERALL
Surface TreatmentBLACK CHEMICAL FINISH OVERALL
Internal Drive StyleHEXAGON
MaterialSTEEL COMP 316 OVERALL
Thread Series DesignatorISO M
Head Diameter8.5 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
ISO4762-M5X25 International Organization for Standardization (iso) (CHE)
3995AS1502-9 PRIMARY Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
No interchangeability data on file.
Other items in FSC 5305 — Screws
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5305-00-001-5016
5305-00-001-5016 · Item name not on file
5305-00-001-9160
5305-00-001-9160 · Item name not on file
5305-00-001-9629
SCREW,ADJUSTING CLEVIS
5305-00-001-9742
5305-00-001-9742 · Item name not on file
5305-00-001-9768
SCREW,CAP,SOCKET HEAD
5305-00-003-4306
SCREW,MACHINE
5305-00-003-6694
5305-00-003-6694 · Item name not on file
5305-00-003-6753
5305-00-003-6753 · Item name not on file

Frequently Asked Questions

What is NSN 5305-01-666-1441?

NSN 5305-01-666-1441 is a Screw,cap,socket Head, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5305, Screws. Status: active.

What part numbers are listed for NSN 5305-01-666-1441?

NSN 5305-01-666-1441 has 2 manufacturer part numbers on file: ISO4762-M5X25 (International Organization for Standardization (iso)), 3995AS1502-9 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What are the specifications of 3995AS1502-9?

Key specifications for 3995AS1502-9: Width Across Flats: 4.0 MILLIMETERS NOMINAL MM; Head Height: 5.0 MILLIMETERS NOMINAL MM; Fastener Length: 25.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: MIL-DTL-13924D, CLASS III MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 14 specifications are documented in the U.S. Government catalog.

Is NSN 5305-01-666-1441 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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