The Insulator,washer, cataloged under National Stock Number 5970-01-027-2998, 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 International Business Machines Corporation Dba IBM. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5970-01-027-2998 |
| Primary Part Number | 100964-1 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | International Business Machines Corporation Dba IBM |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.312 INCHES NOMINAL IN |
| Inside Diameter | 0.125 INCHES NOMINAL IN |
| Chamfer Angle in Deg | 100.0 |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE 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 |
|---|---|
| 100964-1 PRIMARY | International Business Machines Corporation Dba IBM (USA) |
| Reference | Meaning |
|---|---|
| 100964-1 | 3/9 Design control — primary reference Rolm Corp Mil Spec Computers |
NSN 5970-01-027-2998 is a Insulator,washer, manufactured by International Business Machines Corporation Dba IBM, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-027-2998 has 1 manufacturer part number on file: 100964-1 (International Business Machines Corporation Dba IBM).
Key specifications for 100964-1: Overall Height: 0.053 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.312 INCHES NOMINAL IN; Inside Diameter: 0.125 INCHES NOMINAL IN. 5 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.