The Terminal,lug, cataloged under National Stock Number 5940-00-230-0551, 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 Burndy Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5940-00-230-0551 |
| Primary Part Number | YAV14L57 |
| Item Name | Terminal,lug |
| FSC / FSG | 5940 / 59 — Lugs, Terminals, and Terminal Strips |
| Manufacturer | Burndy Llc |
| Status | ACTIVE |
| Mounting Facility Thickness | 0.041 INCHES IN |
| Mounting Hole Diameter | 0.136 INCHES IN |
| Maximum Conductor Size Accommodated | 14 AWG |
| Distance From Mounting Hole Center to Mounting End | 0.117 INCHES IN |
| Basic Shape Style | CRIMP |
| Mounting Method Style | STRAIGHT ONE HOLE |
| Nondefinitive Spec/std Data | L-57 SHAPE AND 2-1/2 TO 4 SIZE AND WT TYPE |
| Electrical Insulation Feature | UNINSULATED |
| Conductor Accommodation Type | STRAIGHT BARREL SINGLE END |
| Surface Treatment | TIN OVERALL SINGLE LAYER |
| Mounting Tongue Width | 0.234 INCHES IN |
| Material | COPPER OVERALL |
| Material Thickness | 0.041 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 |
|---|---|
| YAV14L57 | Burndy Llc (USA) |
| B457 | Abb Installation Products Inc (USA) |
| Reference | Meaning |
|---|---|
| MIL-T-16366 | 4/1 Identification reference U.S. Government activity |
| YAV14L57 | 5/9 Secondary reference Souriau Usa, Inc. Dba Souriau Usa Inc |
| MS21003-12 | 5/9 Secondary reference U.S. Government activity |
| MILE16366 | 5/9 Secondary reference U.S. Government activity |
| L57,21/2-4WT | 3/9 Design control — primary reference Superior Fuse & Manufacturing Co Inc |
NSN 5940-00-230-0551 is a Terminal,lug, manufactured by Burndy Llc, classified under FSC 5940, Lugs, Terminals, and Terminal Strips. Status: active.
NSN 5940-00-230-0551 has 2 manufacturer part numbers on file: YAV14L57 (Burndy Llc), B457 (Abb Installation Products Inc).
3 possible matches (shared part number, not a government interchangeability claim): 6680-00-881-3917, 5998-01-426-4334, 7690-01-581-9075. Verify interchangeability with system specifications before substitution.
Key specifications for YAV14L57: Overall Length: 0.904 INCHES IN; Mounting Facility Thickness: 0.041 INCHES IN; Mounting Hole Diameter: 0.136 INCHES IN; Maximum Conductor Size Accommodated: 14 AWG. 13 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.