The Frequency Standard, cataloged under National Stock Number 6625-01-421-9179, is classified within Federal Supply Class 6625 (Electrical and Electronic Properties Measuring and Testing Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6625-01-421-9179 |
| Primary Part Number | MRT (808-100-12) |
| Item Name | Frequency Standard |
| FSC / FSG | 6625 / 66 — Electrical and Electronic Properties Measuring and Testing Instruments |
| Manufacturer | Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine |
| Status | ACTIVE |
| 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 |
| Acquisition advice code | C |
| Part Number | Manufacturer |
|---|---|
| 172457-101 | Harris Corp Transcomm Div (USA) |
| MRT-H-101 | Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine (USA) |
| MRT (808-100-12) PRIMARY | Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine (USA) |
| MRT-H | Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine (USA) |
NSN 6625-01-421-9179 is a Frequency Standard, manufactured by Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine, classified under FSC 6625, Electrical and Electronic Properties Measuring and Testing Instruments. Status: active.
NSN 6625-01-421-9179 has 4 manufacturer part numbers on file: 172457-101 (Harris Corp Transcomm Div), MRT-H-101 (Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine), MRT (808-100-12) (Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine), MRT-H (Efratom Time & Frequency Products, Inc Dba Datum - Irvine Div Datum - Irvine).
Key specifications for MRT (808-100-12): End Item Identification: VSCS. 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.