The Key,socket Head Screw, cataloged under National Stock Number 5120-01-644-3457, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5120-01-644-3457 |
| Primary Part Number | ET4MM |
| Item Name | Key,socket Head Screw |
| FSC / FSG | 5120 / 51 — No Item Name Available |
| Manufacturer | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc |
| Status | CANCELLED |
| Long Arm Length | 2.680 INCHES NOMINAL IN |
| Wrenching Surface Shape | HEXAGON BOTH ENDS EXTERNAL |
| Style Designator | L-HANDLE |
| Features Provided | SHORT SERIES |
| Surface Treatment | OXIDE OVERALL |
| Short Arm Length | 0.940 INCHES NOMINAL IN |
| Wrenching Surface Size | 4.0 MILLIMETERS NOMINAL BOTH ENDS MM |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| B18.3.2M | The American Society of Mechanical Engineers (USA) |
| ET4MM PRIMARY | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA) |
| FRS ET4MM | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA) |
| 15508 PRIMARY | Eklind Tool Co (USA) |
NSN 5120-01-644-3457 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 (No Item Name Available). Status: cancelled.
NSN 5120-01-644-3457 has 4 cross-referenced part numbers: B18.3.2M (The American Society of Mechanical Engineers), ET4MM (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), FRS ET4MM (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc), 15508 (Eklind Tool Co).
There are 7 known substitutes for 5120-01-644-3457: 6660-00-106-9082, 5110-00-555-1205, 3455-00-812-3584 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for ET4MM: Long Arm Length: 2.680 INCHES NOMINAL IN; Wrenching Surface Shape: HEXAGON BOTH ENDS EXTERNAL; Style Designator: L-HANDLE; Features Provided: SHORT SERIES. 8 total characteristics are documented in the Federal Logistics Information System.
NSN 5120-01-644-3457 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.