The Bolt,machine, cataloged under National Stock Number 5306-01-276-1601, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Motors Corp. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-276-1601 |
| Primary Part Number | B-2.125M |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Head Height | 5.10 MILLIMETERS MINIMUM AND 5.50 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 34.0 MILLIMETERS MINIMUM AND 35.0 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.25 |
| Thread Length | 22.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | GM 500-M 10.9 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 12.0 MILLIMETERS MINIMUM AND 13.0 MILLIMETERS MAXIMUM MM |
| Width Between Flats | 12.73 MILLIMETERS MINIMUM AND 13.00 MILLIMETERS MAXIMUM MM |
| Material | STEEL PROPERTY CLASS 10.9 OVERALL |
| 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 |
|---|---|
| B-2.125M PRIMARY | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 11500869 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 11500869 | 5/9 Secondary reference General Motors Corp |
NSN 5306-01-276-1601 is a Bolt,machine, manufactured by General Motors Corp, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-276-1601 has 1 manufacturer part number on file: B-2.125M (General Motors Corp).
Key specifications for B-2.125M: Head Height: 5.10 MILLIMETERS MINIMUM AND 5.50 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 34.0 MILLIMETERS MINIMUM AND 35.0 MILLIMETERS MAXIMUM MM; Thread Pitch in Millimeters: 1.25. 14 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.