The Boring and Facing M, cataloged under National Stock Number 3450-01-411-1129, is classified within Federal Supply Class 3450 (Machine Tools, Portable) of the Metalworking Machinery (continued) group. The manufacturer of record is Grimsleys House of Tools Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3450-01-411-1129 |
| Primary Part Number | 400-HB |
| Item Name | Boring and Facing M |
| FSC / FSG | 3450 / 34 — Machine Tools, Portable |
| Manufacturer | Grimsleys House of Tools Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 400-HB PRIMARY | Grimsleys House of Tools Inc (USA) |
NSN 3450-01-411-1129 is a Boring and Facing M, manufactured by Grimsleys House of Tools Inc, classified under FSC 3450, Machine Tools, Portable. Status: active.
NSN 3450-01-411-1129 has 1 manufacturer part number on file: 400-HB (Grimsleys House of Tools Inc).
Key specifications for 400-HB: Special Features: DESIGNED FOR USE ON 4 IN. TOP LOADING BALL VALVE BODIES, IN LINE, IN ANY POSITION OR ANGLE. ELIMINATES THE COSTLY NECESSITY OF REMOVING THE VALVE FROM THE LINE TO THE SHOP FOR BORING AND FACING. MACHINE IS CAPABLE OF BORING AND REFACING A BALL VALVE IN LINE, FOR REMOVING POROSITY, CUTS, OR CORROSION AND/OR REBORING AND REFACING AFTER WELDING BUILD UP. EQUIPPED WITH A MICROMETER FITTING, MAKING IT POSSIBLE TO ADJUST THE CUT TO ANY AMOUNT NECESSARY FROM 0.001 IN, TO AS MUCH AS REQUIRED. BUILT TO SPECIFIC VALVE SIZES AND STYLES, THEREBY ALWAYS ASSURING THAT SPECIFIED DIMENSIONS AND ANGLES ARE AS ORIGINALLY DESIGNED. THE BALL VALVE MACHINES ARE MADE WITH ALL WORKING PARTS EXCEPT, THE BORING HEAD ENCLOSED THEREBY ELIMINATING ALL BUT VERY MINOR MAINTENANCE REQUIREMENTS. IN. 0 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.