The Bolt,machine, cataloged under National Stock Number 5306-00-430-0198, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 15 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. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-430-0198 |
| Primary Part Number | 106-226 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Dresser Industries Inc Leroi Div |
| Status | ACTIVE |
| Head Height | 0.188 INCHES NOMINAL IN |
| Fastener Length | 0.406 INCHES NOMINAL IN |
| Thread Length | 0.406 INCHES MINIMUM IN |
| Hardness Rating | 79.0 ROCKWELL B NOMINAL OVERALL |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | UNFINISHED HEAD |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.438 INCHES NOMINAL IN |
| Minimum Tensile Strength | 69000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1018 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 106-226 PRIMARY | Dresser Industries Inc Leroi Div (USA) |
NSN 5306-00-430-0198 is a Bolt,machine, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-430-0198 has 1 manufacturer part number on file: 106-226 (Dresser Industries Inc Leroi Div).
3 possible matches (shared part number, not a government interchangeability claim): 4710-00-602-2727, 4330-01-178-6587, 5365-01-724-3248. Verify interchangeability with system specifications before substitution.
Key specifications for 106-226: Head Height: 0.188 INCHES NOMINAL IN; Fastener Length: 0.406 INCHES NOMINAL IN; Thread Length: 0.406 INCHES MINIMUM IN; Hardness Rating: 79.0 ROCKWELL B NOMINAL 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.