The Bolt,machine, cataloged under National Stock Number 5306-01-552-8656, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Mack Boring & Parts Co. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-552-8656 |
| Primary Part Number | 0-28680825-0 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Mack Boring & Parts Co |
| Status | ACTIVE |
| Head Height | 7.0 MILLIMETERS NOMINAL MM |
| Fastener Length | 25.0 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 18.2 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.3 |
| Thread Length | 25.0 MILLIMETERS NOMINAL MM |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 13.0 MILLIMETERS NOMINAL MM |
| Thread Series Designator | M |
| 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 |
|---|---|
| 0-28680825-0 PRIMARY | Mack Boring & Parts Co (USA) |
NSN 5306-01-552-8656 is a Bolt,machine, manufactured by Mack Boring & Parts Co, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-552-8656 has 1 manufacturer part number on file: 0-28680825-0 (Mack Boring & Parts Co).
Key specifications for 0-28680825-0: Head Height: 7.0 MILLIMETERS NOMINAL MM; Fastener Length: 25.0 MILLIMETERS NOMINAL MM; Extended Washer Diameter: 18.2 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.3. 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.