The Bolt,machine, cataloged under National Stock Number 5306-01-661-1145, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-661-1145 |
| Primary Part Number | AS3580-4-27 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Extended Washer Thickness | 0.1580 INCHES MINIMUM IN |
| Head Height | 0.2930 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN |
| Fastener Length | 1.6780 INCHES MINIMUM AND 1.6980 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.4280 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN |
| Thread Length | 0.8710 INCHES MINIMUM AND 0.8910 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.8070 INCHES MINIMUM IN |
| Width Between Flats | 0.3125 INCHES NOMINAL IN |
| Grip Diameter | 0.2220 INCHES MINIMUM AND 0.2320 INCHES MAXIMUM IN |
| Chamfer Angle | 28.0 DEGREES MINIMUM AND 32.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | NICKEL ALLOY 718 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 |
|---|---|
| AS3580-4-27 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS3580-4-27 | 3/9 Design control — primary reference U.S. Government activity |
| AS3580 | 5/1 Secondary reference Sae International Dba Sae International |
| AS3580 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-661-1145 is a Bolt,machine, manufactured by Sae International Dba Sae International, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-661-1145 has 1 manufacturer part number on file: AS3580-4-27 (Sae International Dba Sae International).
Key specifications for AS3580-4-27: Extended Washer Thickness: 0.1580 INCHES MINIMUM IN; Head Height: 0.2930 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN; Fastener Length: 1.6780 INCHES MINIMUM AND 1.6980 INCHES MAXIMUM IN; Extended Washer Diameter: 0.4280 INCHES MINIMUM AND 0.4480 INCHES MAXIMUM IN. 16 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.