The Terminal,stud, cataloged under National Stock Number 5940-01-478-5140, is classified within Federal Supply Class 5940 (Lugs, Terminals, and Terminal Strips) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Staffall, Inc. Dba Staffall Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5940-01-478-5140 |
| Primary Part Number | 766-55-5 |
| Item Name | Terminal,stud |
| FSC / FSG | 5940 / 59 — Lugs, Terminals, and Terminal Strips |
| Manufacturer | Staffall, Inc. Dba Staffall Inc |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES IN |
| Largest Diameter | 0.245 INCHES SINGLE END IN |
| Basic Shape Style | NONTUBULAR, HEX |
| Mounting Method Style | TAPPED HOLE |
| Electrical Insulation Feature | INSULATING SLEEVE |
| Terminal Length | 0.345 INCHES IN |
| Conductor Accommodation Type | DOUBLE TURRET SINGLE END |
| Surface Treatment | TIN OVERALL EXCEPT INSULATION SINGLE LAYER |
| Mounting Thread Diameter | 0.112 INCHES IN |
| Material | PLASTIC DIALLYL PHTHALATE INSULATION |
| Mounting Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 2051F50ITEM 51 | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| 766-55-5 PRIMARY | Staffall, Inc. Dba Staffall Inc (USA) |
| 766-55-5 | New York Fasteners (USA) |
| 766-55-5 | Useco an Affil of United Service Equipment Co (USA) |
| Reference | Meaning |
|---|---|
| 2051F50 | D/9 Drawing number reference only Northrop Grumman Systems Corporation Div Marine Systems |
NSN 5940-01-478-5140 is a Terminal,stud, manufactured by Staffall, Inc. Dba Staffall Inc, classified under FSC 5940, Lugs, Terminals, and Terminal Strips. Status: active.
NSN 5940-01-478-5140 has 4 manufacturer part numbers on file: 2051F50ITEM 51 (Northrop Grumman Systems Corporation Div Marine Systems), 766-55-5 (Staffall, Inc. Dba Staffall Inc), 766-55-5 (New York Fasteners), 766-55-5 (Useco an Affil of United Service Equipment Co).
2 possible matches (shared part number, not a government interchangeability claim): 5999-01-478-5196, 5330-01-478-7267. Verify interchangeability with system specifications before substitution.
Key specifications for 766-55-5: Width Across Flats: 0.250 INCHES IN; Largest Diameter: 0.245 INCHES SINGLE END IN; Basic Shape Style: NONTUBULAR, HEX; Mounting Method Style: TAPPED HOLE. 11 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.