The Bolt,close Tolerance, cataloged under National Stock Number 5306-01-484-7589, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-484-7589 |
| Primary Part Number | MS27576-7-50R |
| Item Name | Bolt,close Tolerance |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Head Height | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| Fastener Length | 3.928A INCHES MINIMUM AND 3.963 INCHES MAXIMUM A |
| Thread Length | 3.708 INCHES MINIMUM AND 3.728 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.4375 INCHES IN |
| Head Style | DISHED HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 3.125 INCHES NOMINAL IN |
| Width Between Flats | 0.617 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Grip Diameter | 0.106 INCHES MINIMUM AND 0.116 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20.0 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| MS27576-7-50R PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| MS27576-7-50 | 3/9 Design control — primary reference The Boeing Company |
| MS27576-7-50R | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-484-7589 is a Bolt,close Tolerance, manufactured by The Boeing Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-484-7589 has 1 manufacturer part number on file: MS27576-7-50R (The Boeing Company).
Key specifications for MS27576-7-50R: Head Height: 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN; Fastener Length: 3.928A INCHES MINIMUM AND 3.963 INCHES MAXIMUM A; Thread Length: 3.708 INCHES MINIMUM AND 3.728 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.4375 INCHES IN. 13 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.