The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-381-9849, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-381-9849 |
| Primary Part Number | 12414308-020 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Washer Outside Diameter | 21.8 MILLIMETERS NOMINAL MM |
| Width Across Flats | 14.73 MILLIMETERS MINIMUM AND 15.00 MILLIMETERS MAXIMUM MM |
| Thread Tolerance Class | 6H INTERNAL |
| Thread Series | ISO M |
| Thread Pitch in Millimeters | 1.25 |
| Washer Thickness | 1.5 MILLIMETERS NOMINAL MM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 10.0 MILLIMETERS MM |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Material | STEEL PROPERTY CLASS 10.9 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 |
|---|---|
| DIN 6927VM10X1.2510-A2D | Din Deutsches Institut Fur Normung Ev (DEU) |
| 12414308-020 | Amz Alabama Inc. (USA) |
| 12414308-020 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 12414308-020 | Oshkosh Defense Llc (USA) |
| 12414308-020 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| Reference | Meaning |
|---|---|
| 12414308 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5310-01-381-9849 is a Nut,self-Locking,extended Washer, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-381-9849 has 5 manufacturer part numbers on file: DIN 6927VM10X1.2510-A2D (Din Deutsches Institut Fur Normung Ev), 12414308-020 (Amz Alabama Inc.), 12414308-020 (U S Army Tank Automotive Command Amsta-Im-Mm), 12414308-020 (Oshkosh Defense Llc), 12414308-020 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-417-1262, 5310-01-466-2980, 5310-01-564-2339. Verify interchangeability with system specifications before substitution.
Key specifications for 12414308-020: Overall Height: 9.6 MILLIMETERS NOMINAL MM; Washer Outside Diameter: 21.8 MILLIMETERS NOMINAL MM; Width Across Flats: 14.73 MILLIMETERS MINIMUM AND 15.00 MILLIMETERS MAXIMUM MM; Thread Tolerance Class: 6H INTERNAL. 12 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.