The Terminal,stud, cataloged under National Stock Number 5940-01-509-5960, 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 10 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5940-01-509-5960 |
| Primary Part Number | 866B-55-12 |
| Item Name | Terminal,stud |
| FSC / FSG | 5940 / 59 — Lugs, Terminals, and Terminal Strips |
| Manufacturer | Staffall, Inc. Dba Staffall Inc |
| Status | ACTIVE |
| Mounting Facility Thickness | 0.031 INCHES IN |
| Width Across Flats | 0.250 INCHES IN |
| Thru-Hole Diameter | 0.138 INCHES IN |
| Basic Shape Style | NONTUBULAR, HEX |
| Mounting Method Style | STRAIGHT BLANK |
| Electrical Insulation Feature | INSULATING SLEEVE |
| Terminal Length | 0.325 INCHES IN |
| Conductor Accommodation Type | THREADED EXTERNAL SINGLE END |
| Mounting Tongue Width | 0.170 INCHES IN |
| Material | TIN OVERALL EXCEPT INSULATION |
| 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 |
|---|---|
| 866B-55-12 PRIMARY | Staffall, Inc. Dba Staffall Inc (USA) |
| Reference | Meaning |
|---|---|
| 866B-55-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5940-01-509-5960 is a Terminal,stud, manufactured by Staffall, Inc. Dba Staffall Inc, classified under FSC 5940, Lugs, Terminals, and Terminal Strips. Status: active.
NSN 5940-01-509-5960 has 1 manufacturer part number on file: 866B-55-12 (Staffall, Inc. Dba Staffall Inc).
Key specifications for 866B-55-12: Mounting Facility Thickness: 0.031 INCHES IN; Width Across Flats: 0.250 INCHES IN; Thru-Hole Diameter: 0.138 INCHES IN; Basic Shape Style: NONTUBULAR, HEX. 10 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.