The Bolt,machine, cataloged under National Stock Number 5306-01-384-3440, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Bossard Ltd Fasteners. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-384-3440 |
| Primary Part Number | A3157331-001 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Bossard Ltd Fasteners |
| Status | ACTIVE |
| Head Height | 6.4 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 27.0 MILLIMETERS MINIMUM AND 33.0 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | QQ-P-35 CL 4 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 1.5 |
| Thread Length | 33.0 MILLIMETERS MAXIMUM MM |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 10.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 17.0 MILLIMETERS MAXIMUM MM |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 316 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 |
|---|---|
| A3157331-001 | Bossard Ltd Fasteners (CHE) |
| Reference | Meaning |
|---|---|
| DIN933M10X30-A4 | 5/1 Secondary reference Din Deutsches Institut Fur Normung Ev |
| A3157331-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-384-3440 is a Bolt,machine, manufactured by Bossard Ltd Fasteners, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-384-3440 has 1 manufacturer part number on file: A3157331-001 (Bossard Ltd Fasteners).
Key specifications for A3157331-001: Head Height: 6.4 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 27.0 MILLIMETERS MINIMUM AND 33.0 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: QQ-P-35 CL 4 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 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.