The Shielding Gasket,electronic, cataloged under National Stock Number 5999-00-489-3258, is classified within Federal Supply Class 5999 (Miscellaneous Electrical and Electronic Components) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Technical Wire Products, Llc Dba Twp. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5999-00-489-3258 |
| Primary Part Number | 48-00023 |
| Item Name | Shielding Gasket,electronic |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Technical Wire Products, Llc Dba Twp |
| Status | ACTIVE |
| Environmental Protection Material Location | THROUGHOUT RF SHIELDING GASKET |
| Cross-Sectional Height | 0.032 INCHES NOMINAL IN |
| End Radius | 0.460 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN |
| Style Designator | NON-CIRCULAR |
| Material Document and Classification | UNABLE TO DECODE |
| Cross-Sectional Shape Style | EMI |
| Aperture Width | 0.520 INCHES NOMINAL IN |
| Side Radius | 0.125 INCHES NOMINAL IN |
| Center to Center Distance Between Bolt Holes Along Length | 1.000 INCHES NOMINAL IN |
| Material | UNABLE TO DECODE |
| Hole Diameter | 0.132 INCHES MINIMUM AND 0.145 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Shelf Life Code | 0 |
| Criticality Code | X |
| Unit of Issue | EA |
| Acquisition advice code | JN |
| Weight | 0.0200 lbs |
| Cube | 0.0003 cu ft |
| Part Number | Manufacturer |
|---|---|
| 48-00023 | Technical Wire Products, Llc Dba Twp (USA) |
| Reference | Meaning |
|---|---|
| 48-09860 | 5/1 Secondary reference Technical Wire Products, Llc Dba Twp |
| B356000048-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5999-00-489-3258 is a Shielding Gasket,electronic, manufactured by Technical Wire Products, Llc Dba Twp, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-00-489-3258 has 1 manufacturer part number on file: 48-00023 (Technical Wire Products, Llc Dba Twp).
5 possible matches (shared part number, not a government interchangeability claim): 5999-00-493-1447, 5999-01-137-4489, 5999-01-189-5338. Verify interchangeability with system specifications before substitution.
Key specifications for 48-00023: Environmental Protection Material Location: THROUGHOUT RF SHIELDING GASKET; Cross-Sectional Height: 0.032 INCHES NOMINAL IN; End Radius: 0.460 INCHES MINIMUM AND 0.480 INCHES MAXIMUM IN; Style Designator: NON-CIRCULAR. 11 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.