The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-581-6484, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 10 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-581-6484 |
| Primary Part Number | NAS1189C4P6L |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Thread Length | 0.375 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1189 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | STRIP THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 140000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.491 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| NAS1189C4P6L PRIMARY | Huck International, Inc (USA) |
| NAS1189C4P6L | Plastic and Metal Products Corporation (USA) |
| NAS1189C4P6L PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1189C4P6L | Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA) |
| NAS1189C4P6L PRIMARY | Hi-Shear Corporation (USA) |
| NAS1189C4P6L | Nor-Cal Supply Co (USA) |
| NAS1189C4P6L PRIMARY | Nd Industries Inc Div Eastern Division (USA) |
| NAS1189C4P6L PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1189C4P6L PRIMARY | Apcom Inc (USA) |
| NAS1189C4P6L PRIMARY | Long-Lok Llc (USA) |
| Reference | Meaning |
|---|---|
| NAS1189C4P6L | 5/9 Secondary reference F and C Sales Inc |
| NAS1189C4P6L | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189C4P6L | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1189C4P6L | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1189C4P6L | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189C4P6L | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189C4P6L | 5/9 Secondary reference Air Industries Co Inc |
| NAS1189C4P6L | 5/9 Secondary reference U.S. Government activity |
NSN 5305-00-581-6484 is a Screw,cap,socket Head, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-581-6484 has 10 manufacturer part numbers on file: NAS1189C4P6L (Huck International, Inc), NAS1189C4P6L (Plastic and Metal Products Corporation), NAS1189C4P6L (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1189C4P6L (Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc), NAS1189C4P6L (Hi-Shear Corporation) and 5 more.
Key specifications for NAS1189C4P6L: Fastener Length: 0.375 INCHES NOMINAL IN; Thread Length: 0.375 INCHES MINIMUM IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FLAT COUNTERSUNK. 16 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.