The Drop Plug Gauge, cataloged under National Stock Number 5220-01-547-9491, is classified within Federal Supply Class 5220 (Inspection Gages and Precision Layout Tools) of the Measuring Tools group. The manufacturer of record is Northrop Grumman Systems Corp Div Weapon System. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5220-01-547-9491 |
| Primary Part Number | 465-0755 |
| Item Name | Drop Plug Gauge |
| FSC / FSG | 5220 / 52 — Inspection Gages and Precision Layout Tools |
| Manufacturer | Northrop Grumman Systems Corp Div Weapon System |
| Status | ACTIVE |
| 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 |
|---|---|
| 465-0755 PRIMARY | Northrop Grumman Systems Corp Div Weapon System (USA) |
| 465-0755 | Hanwha Defense Australia Pty Ltd (AUS) |
| 201.015.108 | Optronic Instruments and Products (BEL) |
| 465-0755 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Weapon System (USA) |
| Reference | Meaning |
|---|---|
| 10105783 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 465-0755 | 3/9 Design control — primary reference Alliant Techsystems Operations Llc |
NSN 5220-01-547-9491 is a Drop Plug Gauge, manufactured by Northrop Grumman Systems Corp Div Weapon System, classified under FSC 5220, Inspection Gages and Precision Layout Tools. Status: active.
NSN 5220-01-547-9491 has 4 manufacturer part numbers on file: 465-0755 (Northrop Grumman Systems Corp Div Weapon System), 465-0755 (Hanwha Defense Australia Pty Ltd), 201.015.108 (Optronic Instruments and Products), 465-0755 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Weapon System).
Key specifications for 465-0755: Special Features: CYLINDRICAL ROD THAT MUST DROP THROUG BARREL BORE TO VERIFY BARREL STRAIGHTNESS; USE AT OPERATIONAL (UNIT) OR DIRECT SUPPORT LEVEL OF MAINTENANCE.. 0 specifications are 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.