The Insulator,washer, cataloged under National Stock Number 5970-00-442-2254, 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 Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit. Government technical data includes 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5970-00-442-2254 |
| Primary Part Number | B18376-13 |
| Item Name | Insulator,washer |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit |
| Status | ACTIVE |
| Style Designator | ROUND, FLAT |
| Outside Diameter | 0.562 INCHES NOMINAL IN |
| Inside Diameter | 0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE 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 |
|---|---|
| B18376-13 PRIMARY | Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit (USA) |
| Reference | Meaning |
|---|---|
| 18376 | 5/1 Secondary reference Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit |
NSN 5970-00-442-2254 is a Insulator,washer, manufactured by Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-00-442-2254 has 1 manufacturer part number on file: B18376-13 (Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit).
3 possible matches (shared part number, not a government interchangeability claim): 5970-00-442-2265, 5950-01-052-1265, 5970-01-501-0550. Verify interchangeability with system specifications before substitution.
Key specifications for B18376-13: Overall Height: 0.120 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Outside Diameter: 0.562 INCHES NOMINAL IN; Inside Diameter: 0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN. 4 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.