The Screw,close Tolerance, cataloged under National Stock Number 5305-01-020-5930, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 24 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-020-5930 |
| Primary Part Number | NAS1184E4 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Fastener Length | 0.660 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
| Thread Length | 0.400 INCHES MINIMUM AND 0.450 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1184 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Locking Feature | PATCH OR PELLET OR STRIP THREADS |
| Surface Treatment | PASSIVATE FASTENER |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET) |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC LOCKING FEATURE |
| Material | IRON ALLOY 660 FASTENER |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.367 INCHES MINIMUM AND 0.375 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 |
|---|---|
| NAS1184E4 | Hi-Shear Corporation (USA) |
| NAS1184E4 | Nor-Cal Supply Co (USA) |
| NAS1184E4 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| NAS1184E4 | Long-Lok Llc (USA) |
| NAS1184E4 | Plastic and Metal Products Corporation (USA) |
| NAS1184E4 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| NAS1184E4 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1184E4 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1184E4 | 5/9 Secondary reference F and C Sales Inc |
| NAS1184E4 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1184E4 | 5/2 Secondary reference U.S. Government activity |
| NAS1184E4 | 5/2 Secondary reference U.S. Government activity |
| NAS1184E4 | 5/2 Secondary reference U.S. Government activity |
| NAS1184E4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-020-5930 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-020-5930 has 6 manufacturer part numbers on file: NAS1184E4 (Hi-Shear Corporation), NAS1184E4 (Nor-Cal Supply Co), NAS1184E4 (Fastener Innovation Technology, Inc. Dba F I T), NAS1184E4 (Long-Lok Llc), NAS1184E4 (Plastic and Metal Products Corporation) and 1 more.
Key specifications for NAS1184E4: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Surface Finish: 32.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.133 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN. 24 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.