The Screw,close Tolerance, cataloged under National Stock Number 5305-01-520-9378, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-520-9378 |
| Primary Part Number | NAS5314E3P2 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Head Height | 0.127 INCHES NOMINAL IN |
| Fastener Length | 0.401 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MS-QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.276 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5731 FED SPEC 1ST MATERIAL RESPONSE OR AMS 5732 FED SPEC 2ND MATERIAL RESPONSE OR AMS 5737 FED SPEC 3RD MATERIAL RESPONSE OR AMS 5853 FED SPEC 4TH MATERIAL RESPONSE OVERALL |
| Spline Major Diameter | 0.155 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | UNDERCUT PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.125 INCHES NOMINAL IN |
| Grip Diameter | 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 3180 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | TORX |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.352 INCHES MINIMUM AND 0.373 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 |
|---|---|
| NAS5314E3P2 | Howmet Global Fastening Systems Inc (USA) |
| NAS5314E3P2 | Saturn Fasteners Inc (USA) |
| NAS5314E3P2 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| NAS5314E3P2 | Lfc Industries, Inc. (USA) |
| NAS5314E3P2 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| NAS5314E3P2 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| NAS5314E3P2 | Heartland Precision Fasteners Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS5314E3P2 | 5/2 Secondary reference U.S. Government activity |
| NAS5314E3P2 | 3/2 Design control — primary reference U.S. Government activity |
| NAS5314E3P2 | 5/2 Secondary reference U.S. Government activity |
| 120-259E3P2 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-520-9378 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-520-9378 has 7 manufacturer part numbers on file: NAS5314E3P2 (Howmet Global Fastening Systems Inc), NAS5314E3P2 (Saturn Fasteners Inc), NAS5314E3P2 (Sps Technologies, Llc Dba PB Fasteners), NAS5314E3P2 (Lfc Industries, Inc.), NAS5314E3P2 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company) and 2 more.
Key specifications for NAS5314E3P2: Head Height: 0.127 INCHES NOMINAL IN; Fastener Length: 0.401 INCHES NOMINAL IN; Surface Treatment Document and Classification: MS-QQ-P-416, TYPE 2, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.276 INCHES NOMINAL IN. 19 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.