The Insulator,bushing, cataloged under National Stock Number 5970-01-253-3322, 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 Birnbach Co Inc. Government technical data includes 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5970-01-253-3322 |
| Primary Part Number | 6738 |
| Item Name | Insulator,bushing |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Birnbach Co Inc |
| Status | ACTIVE |
| Shank Height | 0.031 INCHES NOMINAL IN |
| Style Designator | SHOULDER |
| Material Document and Classification | MIL-F-1148, GRADE CH, FORM T MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.375 INCHES NOMINAL IN |
| Shank Outside Diameter | 0.308 INCHES NOMINAL IN |
| Inside Diameter | 0.196 INCHES NOMINAL IN |
| Material | PAPER 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 |
|---|---|
| 6738 PRIMARY | Birnbach Co Inc (USA) |
| Reference | Meaning |
|---|---|
| 2832519 | 7/2 Vendor item drawing reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5970-01-253-3322 is a Insulator,bushing, manufactured by Birnbach Co Inc, classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-253-3322 has 1 manufacturer part number on file: 6738 (Birnbach Co Inc).
3 possible matches (shared part number, not a government interchangeability claim): 2510-01-416-2608, 6505-01-561-6463, 5895-01-596-7883. Verify interchangeability with system specifications before substitution.
Key specifications for 6738: Overall Height: 0.094 INCHES NOMINAL IN; Shank Height: 0.031 INCHES NOMINAL IN; Style Designator: SHOULDER; Material Document and Classification: MIL-F-1148, GRADE CH, FORM T MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 7 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.