The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-522-7331, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Martinez and Turek, Inc. Dba Martinez & Turek Inc. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-522-7331 |
| Primary Part Number | MT10244M221-15 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Martinez and Turek, Inc. Dba Martinez & Turek Inc |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL EXCEPT INSERT |
| 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 |
|---|---|
| MT10244M221-15 PRIMARY | Martinez and Turek, Inc. Dba Martinez & Turek Inc (USA) |
NSN 5310-01-522-7331 is a Nut,self-Locking,hexagon, manufactured by Martinez and Turek, Inc. Dba Martinez & Turek Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-522-7331 has 1 manufacturer part number on file: MT10244M221-15 (Martinez and Turek, Inc. Dba Martinez & Turek Inc).
Key specifications for MT10244M221-15: Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.375 INCHES IN; Nut Style: HEXAGON. 7 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.