The Cutter Bit,tool Holder, cataloged under National Stock Number 3455-01-052-0928, is classified within Federal Supply Class 3455 (Cutting Tools for Machine Tools) of the Metalworking Machinery (continued) group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3455-01-052-0928 |
| Primary Part Number | A-A-51143 STYLE AL SZ 4 CLASS 5 |
| Item Name | Cutter Bit,tool Holder |
| FSC / FSG | 3455 / 34 — Cutting Tools for Machine Tools |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Overall Thickness | 0.250 INCHES NOMINAL IN |
| Shape | RECTANGULAR |
| Material Location | TIP |
| Material Type for Which Designed | NONFERROUS METAL |
| Nondefinitive Spec/std Data | AL STYLE AND 4 SIZE AND 5 CLASS |
| Edge Type | LEFT HAND TURNING |
| Unable to Decode | UNABLE TO DECODE |
| Material | CARBIDE |
| Cutting Edge Finish | GROUND TO SHAPE |
| 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 |
|---|---|
| A-A-51143 STYLE AL SZ 4 CLASS 5 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
| Reference | Meaning |
|---|---|
| AL 4-78B | 5/9 Secondary reference Armstrong Bros Tool Co |
| A-A-51143 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| 87-601 | 5/9 Secondary reference Easco Hand Tools Inc Dba Danaher Tool Group Div Danaher Tool Group Easco Hand Tools Inc. |
| 87-601 | C/1 Advisory reference — outside the item-of-supply concept Apex Tool Group, Llc Dba Nicholson |
| AL4/370 | 5/9 Secondary reference Armstrong Bros Tool Co |
| 87-601 | 3/9 Design control — primary reference Armstrong Bros Tool Co |
NSN 3455-01-052-0928 is a Cutter Bit,tool Holder, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 3455, Cutting Tools for Machine Tools. Status: active.
NSN 3455-01-052-0928 has 1 manufacturer part number on file: A-A-51143 STYLE AL SZ 4 CLASS 5 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
1 possible match (shared part number, not a government interchangeability claim): 4410-01-196-7561. Verify interchangeability with system specifications before substitution.
Key specifications for A-A-51143 STYLE AL SZ 4 CLASS 5: Overall Thickness: 0.250 INCHES NOMINAL IN; Shape: RECTANGULAR; Overall Length: 1.812 INCHES NOMINAL IN; Overall Width: 0.250 INCHES NOMINAL IN. 9 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.