The Insulator,disk, cataloged under National Stock Number 5970-00-759-1874, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Materion Brush Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-00-759-1874 |
| Primary Part Number | BB-MT-3-62 |
| Item Name | Insulator,disk |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Materion Brush Inc |
| Status | ACTIVE |
| Style Designator | FLAT, ROUND |
| Outside Diameter | 1.153 INCHES NOMINAL IN |
| Material | BERYLLIUM OXIDE OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BB-MT-3-62 | Materion Brush Inc (USA) |
| BBD-1153-60 | Materion Brush Inc (USA) |
| Reference | Meaning |
|---|---|
| 860398-1 | 3/9 Design control — primary reference Litton Systems Inc. Div Navigation Systems Division |
| IP-60999 | 5/9 Secondary reference Advanced Technical Ceramics Company Dba Advanced Technical Ceramics Co Div Adtech Ceramics |
| 860398-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
NSN 5970-00-759-1874 is a Insulator,disk, manufactured by Materion Brush Inc, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-759-1874 has 2 manufacturer part numbers on file: BB-MT-3-62 (Materion Brush Inc), BBD-1153-60 (Materion Brush Inc).
Key specifications for BB-MT-3-62: Overall Height: 0.045 INCHES MINIMUM AND 0.065 INCHES MAXIMUM IN; Style Designator: FLAT, ROUND; Outside Diameter: 1.153 INCHES NOMINAL IN; Special Features: TWO HOLES 0.080 IN. DIA; ONE HOLE 0.320 IN. DIA IN. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.