The Handle,socket Wrench, cataloged under National Stock Number 5120-01-355-1855, 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 6 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5120-01-355-1855 |
| Primary Part Number | TM40B |
| Item Name | Handle,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 | 0.250 INCHES NOMINAL SINGLE END IN |
| Style Designator | SPIN RIGID |
| Drive End Shape | SQUARE SINGLE END EXTERNAL |
| Surface Treatment | CHROMIUM OVERALL |
| Material | PLASTIC HANDLE |
| Material | STEEL WRENCHING SURFACE |
| 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 |
|---|---|
| TM40B PRIMARY | Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc (USA) |
NSN 5120-01-355-1855 is a Handle,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 5120-01-355-1855 has 1 manufacturer part number on file: TM40B (Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-535-1242. Verify interchangeability with system specifications before substitution.
Key specifications for TM40B: Drive Surface Size: 0.250 INCHES NOMINAL SINGLE END IN; Style Designator: SPIN RIGID; Overall Length: 4.031 INCHES NOMINAL IN; Drive End Shape: SQUARE SINGLE END EXTERNAL. 6 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.