The Screw,close Tolerance, cataloged under National Stock Number 5305-01-075-2060, 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 22 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-075-2060 |
| Primary Part Number | NAS1144E3 |
| 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 | 0.489 INCHES MINIMUM AND 0.519 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.291 INCHES MINIMUM AND 0.341 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | MODIFIED PAN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1144 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.464 INCHES MINIMUM AND 0.493 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 |
|---|---|
| NAS1144E3 | Hi-Shear Corporation (USA) |
| NAS1144E3 | Apcom Inc (USA) |
| NAS1144E3 | Plastic and Metal Products Corporation (USA) |
| NAS1144E3 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| NAS1144E3 | Nor-Cal Supply Co (USA) |
| NAS1144E3 | Fastener Innovation Technology, Inc. Dba F I T (USA) |
| Reference | Meaning |
|---|---|
| NAS1144E3 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| NAS1144E3 | 5/2 Secondary reference U.S. Government activity |
| NAS1144E3 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| NAS1144E3 | 3/2 Design control — primary reference U.S. Government activity |
| NAS1144E3 | 5/9 Secondary reference F and C Sales Inc |
| NAS1144E3 | 5/9 Secondary reference Air Industries Co Inc |
| NAS1144E3 | 5/9 Secondary reference U.S. Government activity |
| NAS1144E3 | 5/2 Secondary reference U.S. Government activity |
NSN 5305-01-075-2060 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-075-2060 has 6 manufacturer part numbers on file: NAS1144E3 (Hi-Shear Corporation), NAS1144E3 (Apcom Inc), NAS1144E3 (Plastic and Metal Products Corporation), NAS1144E3 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), NAS1144E3 (Nor-Cal Supply Co) and 1 more.
Key specifications for NAS1144E3: 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. 22 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.