The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-078-4455, 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-078-4455 |
| Primary Part Number | NAS1189E6P18B |
| 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 | 1.063 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.820 INCHES MINIMUM AND 0.965 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1189 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | PATCH THREADS |
| Surface Treatment | PASSIVATE OVERALL |
| Minimum Tensile Strength | 160000 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 | 24 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.694 INCHES MINIMUM AND 0.762 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 |
|---|---|
| NAS1189E6P18B PRIMARY | Long-Lok Llc (USA) |
| NAS1189E6P18B PRIMARY | Nd Industries Inc Div Eastern Division (USA) |
| NAS1189E6P18B | Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc (USA) |
| NAS1189E6P18B PRIMARY | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1189E6P18B PRIMARY | Hi-Shear Corporation (USA) |
| NAS1189E6P18B PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1189E6P18B | Nor-Cal Supply Co (USA) |
| NAS1189E6P18B | Plastic and Metal Products Corporation (USA) |
| NAS1189E6P18B PRIMARY | Huck International, Inc (USA) |
| NAS1189E6P18B PRIMARY | Apcom Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1189E6P18B | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189E6P18B | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189E6P18B | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1189E6P18B | 3/2 Design control — primary reference U.S. Government activity |
| NAS1189E6P18B | 5/9 Secondary reference Air Industries Co Inc |
| NAS1189E6P18B | 5/9 Secondary reference U.S. Government activity |
| NAS1189E5P18B | 5/9 Secondary reference F and C Sales Inc |
| NAS1189E6P18B | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5305-01-078-4455 is a Screw,cap,socket Head, manufactured by Long-Lok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-078-4455 has 10 manufacturer part numbers on file: NAS1189E6P18B (Long-Lok Llc), NAS1189E6P18B (Nd Industries Inc Div Eastern Division), NAS1189E6P18B (Hardware Specialty Co. Inc. Dba Hardware Specialty Co Inc), NAS1189E6P18B (Fastener Innovation Technology, Inc. Dba F I T), NAS1189E6P18B (Hi-Shear Corporation) and 5 more.
Key specifications for NAS1189E6P18B: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Fastener Length: 1.063 INCHES MINIMUM AND 1.125 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.