The Adapter,socket Wrench, cataloged under National Stock Number 5120-01-369-1027, is classified within Federal Supply Class 5120 (Hand Tools, Nonedged, Nonpowered) of the Hand Tools group. The manufacturer of record is Williams J H Industrial Products Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5120-01-369-1027 |
| Primary Part Number | MB-131 |
| Item Name | Adapter,socket Wrench |
| FSC / FSG | 5120 / 51 — Hand Tools, Nonedged, Nonpowered |
| Manufacturer | Williams J H Industrial Products Inc |
| Status | ACTIVE |
| Drive Surface Size | 0.250 INCHES NOMINAL FIRST END IN |
| Drive Surface Size | 0.375 INCHES NOMINAL SECOND END IN |
| Style Designator | EXTERNAL-INTERNAL |
| Outside Diameter | 0.687 INCHES MAXIMUM IN |
| Features Provided | MANUAL TOOL |
| Drive End Shape | SQUARE FIRST END EXTERNAL |
| Drive End Shape | SQUARE SECOND END INTERNAL |
| Surface Treatment | CHROMIUM OVERALL |
| 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 |
|---|---|
| MB-131 PRIMARY | Williams J H Industrial Products Inc (USA) |
| MB-131 WILLIAMS | Kipper Tool Company Dba Kipper Management Inc (USA) |
| 139014 | Wera Werkzeuge Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| 2/LTT 237 23 | C/1 Advisory reference — outside the item-of-supply concept Saab Aktiebolag Div Radar Solutions |
| 2/LTT 237 23 | 5/9 Secondary reference Saab Ab (publ) - Business Area Surveillance |
NSN 5120-01-369-1027 is a Adapter,socket Wrench, manufactured by Williams J H Industrial Products Inc, classified under FSC 5120, Hand Tools, Nonedged, Nonpowered. Status: active.
NSN 5120-01-369-1027 has 3 manufacturer part numbers on file: MB-131 (Williams J H Industrial Products Inc), MB-131 WILLIAMS (Kipper Tool Company Dba Kipper Management Inc), 139014 (Wera Werkzeuge Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 5130-01-671-7554. Verify interchangeability with system specifications before substitution.
Key specifications for MB-131: Drive Surface Size: 0.250 INCHES NOMINAL FIRST END IN; Drive Surface Size: 0.375 INCHES NOMINAL SECOND END IN; Style Designator: EXTERNAL-INTERNAL; Overall Length: 1.000 INCHES NOMINAL IN. 9 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.