The Gage,plug Countersink, cataloged under National Stock Number 5220-00-790-3718, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. The manufacturer of record is Telemechanics Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5220-00-790-3718 |
| Primary Part Number | 156743 |
| Item Name | Gage,plug Countersink |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Gaging Member Outside Diameter | 0.0620 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 156743 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| LCD0778-156743 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 156743 | 5/9 Secondary reference American Telephone and Telegraph Co |
| TP156743 | 5/9 Secondary reference Teleprinter Corp of America |
NSN 5220-00-790-3718 is a Gage,plug Countersink, manufactured by Telemechanics Inc, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
NSN 5220-00-790-3718 has 1 manufacturer part number on file: 156743 (Telemechanics Inc).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-729-0043. Verify interchangeability with system specifications before substitution.
Key specifications for 156743: Special Features: USED IN ADJUSTMENT ON TRANSMITTER-DISTRIBUTOR OF TYPEWRITER EQUIPMENT TELETYPE CORP MODEL NO. 28,P/O TOOL EQUIPMENT ECOM 80063 TYPE NO. TE-50-B; Gaging Member Outside Diameter: 0.0620 INCHES IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.