The Mounting Pad,electrical-Electron, cataloged under National Stock Number 5999-01-181-8331, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5999-01-181-8331 |
| Primary Part Number | 639AS3668-1 |
| Item Name | Mounting Pad,electrical-Electron |
| FSC / FSG | 5999 / 59 — Miscellaneous Electrical and Electronic Components |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 BASE SINGLE MOUNTING FACILITY |
| Mounting Facility Type and Quantity | 3 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES |
| Body Style | DISK |
| Overall Diameter | 0.125 INCHES NOMINAL IN |
| Unthreaded Mounting Hole Diameter | 0.030 INCHES NOMINAL ALL MOUNTING FACILITIES IN |
| Material Document and Classification | MIL-M-14 TYPE SDG MIL SPEC SINGLE MATERIAL RESPONSE |
| Color | BLACK |
| Material | PLASTIC DIALLYL PHTHALATE |
| 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 | ZN |
| Weight | 0.0078 lbs |
| Cube | 0.0002 cu ft |
| Part Number | Manufacturer |
|---|---|
| 639AS3668-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 7717-222 | 5/9 Secondary reference Thermalloy Co Inc |
| 1656AS5692 | C/1 Advisory reference — outside the item-of-supply concept Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5999-01-181-8331 is a Mounting Pad,electrical-Electron, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5999, Miscellaneous Electrical and Electronic Components. Status: active.
NSN 5999-01-181-8331 has 1 manufacturer part number on file: 639AS3668-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-183-7149. Verify interchangeability with system specifications before substitution.
Key specifications for 639AS3668-1: Mounting Facility Type and Quantity: 1 BASE SINGLE MOUNTING FACILITY; Mounting Facility Type and Quantity: 3 UNTHREADED HOLE(S) ALL MOUNTING FACILITIES; Overall Height: 0.010 INCHES MINIMUM AND 0.025 INCHES MAXIMUM IN; Body Style: DISK. 8 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.