The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-143-9191, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Long-Lok Llc. Government technical data includes 20 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-143-9191 |
| Primary Part Number | NAS1189E4P24 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Long-Lok Llc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Fastener Length | 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.261 INCHES MINIMUM AND 1.394 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| 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 OR PELLET OR PATCH THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 16000 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 | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.442 INCHES MINIMUM AND 0.491 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 |
|---|---|
| NAS1189E4P24 | Plastic and Metal Products Corporation (USA) |
| NAS1189E4P24 | Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA) |
| NAS1189E4P24 | Nor-Cal Supply Co (USA) |
| NAS1189E4P24 PRIMARY | Long-Lok Llc (USA) |
| NAS1189E4P24 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1189E4P24 PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1189E4P23 PRIMARY | Nd Industries Inc Div Eastern Division (USA) |
| NAS1189E4P24 PRIMARY | Hi-Shear Corporation (USA) |
| NAS1189E4P24 PRIMARY | Apcom Inc (USA) |
| NAS1189E4P24 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1189E4P24 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1189E4P24 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1189E4P24 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189E4P24 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189E4P24 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189E4P24 | 5/9 Secondary reference F and C Sales Inc |
| NAS1189E4P24 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1189E4P24 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-143-9191 is a Screw,cap,socket Head, manufactured by Long-Lok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-143-9191 has 10 manufacturer part numbers on file: NAS1189E4P24 (Plastic and Metal Products Corporation), NAS1189E4P24 (Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc), NAS1189E4P24 (Nor-Cal Supply Co), NAS1189E4P24 (Long-Lok Llc), NAS1189E4P24 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 5 more.
Key specifications for NAS1189E4P24: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 1.438 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 20 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.