The Heat Sink,soldering Aid, cataloged under National Stock Number 3439-01-149-9979, is classified within Federal Supply Class 3439 (Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories) of the Metalworking Machinery (continued) group. The manufacturer of record is Unison Industries Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3439-01-149-9979 |
| Primary Part Number | 137108 |
| Item Name | Heat Sink,soldering Aid |
| FSC / FSG | 3439 / 34 — Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 137108 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 137108 | 5/9 Secondary reference U.S. Government activity |
NSN 3439-01-149-9979 is a Heat Sink,soldering Aid, manufactured by Unison Industries Llc, classified under FSC 3439, Miscellaneous Welding, Soldering, and Brazing Supplies and Accessories. Status: active.
NSN 3439-01-149-9979 has 1 manufacturer part number on file: 137108 (Unison Industries Llc).
Key specifications for 137108: Special Features: 3.250 IN. LG;1.625 IN. WD;0.625 IN. THK;1.923 IN. OD RADIUS;WT 1.2 LBS;MATL-COPPER,HARD;HEAT SINK IS REQ'D DURING PLUG WELDING OPERATION OF WORN REACTOR MTG HOLES ON STATOR HSG ON F100 STATOR/GENERATOR LBS. 0 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.