The Bolt,machine, cataloged under National Stock Number 5306-00-434-0149, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Necchi Spa. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-434-0149 |
| Primary Part Number | 4042218 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Necchi Spa |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Fastener Length | 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN |
| Thread Length | 0.540 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 7461 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Grip Length | 1.628 INCHES MINIMUM IN |
| Width Between Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 4042218 | Necchi Spa (ITA) |
| Reference | Meaning |
|---|---|
| 4042218 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
| 4042218 | 3/2 Design control — primary reference U.S. Government activity |
| 4042218 | 5/2 Secondary reference U.S. Government activity |
| 4042218 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
NSN 5306-00-434-0149 is a Bolt,machine, manufactured by Necchi Spa, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-434-0149 has 1 manufacturer part number on file: 4042218 (Necchi Spa).
Key specifications for 4042218: Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Fastener Length: 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM IN; Thread Length: 0.540 INCHES MINIMUM AND 0.632 INCHES MAXIMUM IN; Material Document and Classification: AMS 7461 ASSN STD SINGLE MATERIAL 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.