The Key,socket Head Screw, cataloged under National Stock Number 5120-01-644-3449, 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 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5120-01-644-3449 |
| Primary Part Number | ET12MM |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc |
| Status | CANCELLED |
| Short Arm Length | 1.730 INCHES NOMINAL IN |
| Wrenching Surface Size | 12.0 MILLIMETERS NOMINAL BOTH ENDS MM |
| Style Designator | L-HANDLE |
| Features Provided | SHORT SERIES |
| Long Arm Length | 4.800 INCHES NOMINAL IN |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ET12MM PRIMARY | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA) |
| 15524 PRIMARY | Eklind Tool Co (USA) |
| Reference | Meaning |
|---|---|
| B18.3.2M | 3/1 Design control — primary reference The American Society of Mechanical Engineers |
NSN 5120-01-644-3449 is a Key,socket Head Screw, manufactured by Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: cancelled.
NSN 5120-01-644-3449 has 2 manufacturer part numbers on file: ET12MM (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), 15524 (Eklind Tool Co).
Key specifications for ET12MM: Short Arm Length: 1.730 INCHES NOMINAL IN; Wrenching Surface Size: 12.0 MILLIMETERS NOMINAL BOTH ENDS MM; Style Designator: L-HANDLE; Features Provided: SHORT SERIES. 8 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.
NSN 5120-01-644-3449 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.