The Tubing,drain,thawing System, cataloged under National Stock Number 6640-01-557-4062, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Helmer Scientific Llc Dba Helmer. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-01-557-4062 |
| Primary Part Number | 320515-1 |
| Item Name | Tubing,drain,thawing System |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | Helmer Scientific Llc Dba Helmer |
| 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 |
|---|---|
| 320515-1 PRIMARY | Helmer Scientific Llc Dba Helmer (USA) |
| Reference | Meaning |
|---|---|
| 6640NCM071876 | 5/1 Secondary reference Defense Medical Standardization Board |
| 4912 | 5/1 Secondary reference U.S. Government activity |
NSN 6640-01-557-4062 is a Tubing,drain,thawing System, manufactured by Helmer Scientific Llc Dba Helmer, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-557-4062 has 1 manufacturer part number on file: 320515-1 (Helmer Scientific Llc Dba Helmer).
Key specifications for 320515-1: Special Features: DRAIN TUBING; CLEAR; REPLACEMENT PART, FOR THE PLASMA THAWING SYSTEM, MODEL DH4, NSN: 6640-01-510-3136; Part Name Assigned by Controlling Agency: TUBING DRAIN CLEAR F/THAWING SYS PLASMA MODEL DH4; End Item Identification: THAWING SYSTEM, NSN: 6640-01-510-3136. 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.