The Bolt,machine, cataloged under National Stock Number 5306-01-019-2377, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-019-2377 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.844 INCHES NOMINAL IN |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Thread Length | 2.125 INCHES NOMINAL IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | ASTM A193,B7 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 1.125 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.812 INCHES NOMINAL IN |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 8 |
| Material | STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OVERALL |
| Thread Series Designator | UN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| K8954950-421 | 3/9 Design control — primary reference General Electric Co Naval and Drive Turbine Systems Dept |
| 8954950P421 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| K8954950 | 5/9 Secondary reference General Electric Co Naval and Drive Turbine Systems Dept |
NSN 5306-01-019-2377 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-019-2377: Head Height: 0.844 INCHES NOMINAL IN; Fastener Length: 3.000 INCHES NOMINAL IN; Thread Length: 2.125 INCHES NOMINAL IN; Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL. 15 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.