The Washer,key, cataloged under National Stock Number 5310-01-071-2601, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Thrustmaster of Texas, Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-071-2601 |
| Primary Part Number | MB12 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Thrustmaster of Texas, Inc |
| Status | ACTIVE |
| Overall Distance Including Keys | 86.0 MILLIMETERS NOMINAL MM |
| Style Designator | KEY |
| Material Thickness | 1.5 MILLIMETERS NOMINAL MM |
| External Prebent Key Angle | 59.0 DEGREES NOMINAL |
| Material | STEEL OVERALL |
| Hole Diameter | 60.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| MB12 | Veth Propulsion (NLD) |
| MB12 PRIMARY | Thrustmaster of Texas, Inc (USA) |
| Reference | Meaning |
|---|---|
| DIN 5406 MB-12 | 5/9 Secondary reference Metric and Multistandard Components Corp |
| MB-12 | 5/9 Secondary reference Metric and Multistandard Components Corp |
NSN 5310-01-071-2601 is a Washer,key, manufactured by Thrustmaster of Texas, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-071-2601 has 2 manufacturer part numbers on file: MB12 (Veth Propulsion), MB12 (Thrustmaster of Texas, Inc).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-165-4750, 6635-01-279-2000, 7320-01-506-7304. Verify interchangeability with system specifications before substitution.
Key specifications for MB12: Overall Distance Including Keys: 86.0 MILLIMETERS NOMINAL MM; Style Designator: KEY; Material Thickness: 1.5 MILLIMETERS NOMINAL MM; External Prebent Key Angle: 59.0 DEGREES NOMINAL. 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.