The Bolt,machine, cataloged under National Stock Number 5306-01-666-0935, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-666-0935 |
| Primary Part Number | AS3237-28 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Extended Washer Thickness | 0.60 INCHES MINIMUM IN |
| Head Height | 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Fastener Length | 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN |
| Extended Washer Diameter | 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Width Between Flats | 0.3125 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Material | NICKEL ALLOY OVERALL |
| 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 |
|---|---|
| AS3237-28 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS3237-28 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-666-0935 is a Bolt,machine, manufactured by Sae International Dba Sae International, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-666-0935 has 1 manufacturer part number on file: AS3237-28 (Sae International Dba Sae International).
Key specifications for AS3237-28: Extended Washer Thickness: 0.60 INCHES MINIMUM IN; Head Height: 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Fastener Length: 1.865 INCHES MINIMUM AND 1.885 INCHES MAXIMUM IN; Extended Washer Diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN. 9 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.