The Screw,close Tolerance, cataloged under National Stock Number 5305-00-680-6047, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-680-6047 |
| Primary Part Number | S2329078-46 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Finish | 20.0 MICROINCHES GRIP |
| Width Across Flats | 0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN |
| Fastener Length | 4.500 INCHES MINIMUM AND 4.547 INCHES MAXIMUM IN |
| Thread Length | 0.428 INCHES MINIMUM AND 0.495 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR MIL-S-8503 MIL SPEC 3RD MATERIAL RESPONSE OR MIL-S-6098 MIL SPEC 4TH MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 5TH MATERIAL RESPONSE OR AMS 6300 ASSN STD 6TH MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 4.052 INCHES MINIMUM AND 4.072 INCHES MAXIMUM IN |
| Grip Diameter | 0.4986 INCHES MINIMUM AND 0.4991 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM THREADS |
| Surface Treatment | CADMIUM HEAD |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 6150 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4037 OVERALL |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 4.302 INCHES MINIMUM AND 4.322 INCHES MAXIMUM FIRST HOLE IN |
| Head Diameter | 1.007 INCHES MINIMUM AND 1.017 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 |
|---|---|
| S2329078-46 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| S2329078-46 | 5/9 Secondary reference Lawrence Engineering and Supply Inc |
| S2329078-46 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-680-6047 is a Screw,close Tolerance, manufactured by The Boeing Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-680-6047 has 1 manufacturer part number on file: S2329078-46 (The Boeing Company).
Key specifications for S2329078-46: Surface Finish: 20.0 MICROINCHES GRIP; Width Across Flats: 0.376 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN; Fastener Length: 4.500 INCHES MINIMUM AND 4.547 INCHES MAXIMUM IN; Thread Length: 0.428 INCHES MINIMUM AND 0.495 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.