The Socket,socket Wrench, cataloged under National Stock Number 5120-01-656-9913, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-656-9913 |
| Primary Part Number | B2191 |
| Item Name | Socket,socket Wrench |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc |
| Status | ACTIVE |
| Drive Surface Size | 0.500 INCHES NOMINAL SINGLE END IN |
| Wrenching End Outside Diameter | 1.125 INCHES NOMINAL IN |
| Style Designator | INTERNAL-INTERNAL |
| Features Provided | MANUAL TOOL |
| Wrenching Surface Shape | PENTAGON SINGLE END INTERNAL |
| Drive End Shape | SQUARE SINGLE END INTERNAL |
| Wrenching End Opening Depth | 0.500 INCHES NOMINAL IN |
| Surface Treatment | CHROMIUM OVERALL |
| Functional Description | USED TO SERVICE RECESSED 5-POINT NUTS FOUND ON TAMPER-RESISTANT BUFFALO COVERS USED BY GAS, ELECTRIC, AND SOME WATER COMPANIES TO PROTECT SHUT-OFF VALVE |
| Drive End Outside Diameter | 1.125 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| B2191 PRIMARY | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA) |
NSN 5120-01-656-9913 is a Socket,socket Wrench, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-656-9913 has 1 manufacturer part number on file: B2191 (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).
Key specifications for B2191: Drive Surface Size: 0.500 INCHES NOMINAL SINGLE END IN; Wrenching End Outside Diameter: 1.125 INCHES NOMINAL IN; Style Designator: INTERNAL-INTERNAL; Overall Length: 1.063 INCHES NOMINAL IN. 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.