The Nut Spacer,plate, cataloged under National Stock Number 5310-00-591-2550, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-591-2550 |
| Item Name | Nut Spacer,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Plate Thickness | 0.125 INCHES NOMINAL IN |
| Hole Thread Quantity Per Inch | 32 |
| Nut Length | 1.250 INCHES NOMINAL IN |
| Plate Width | 0.375 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Hole Nominal Thread Diameter | 0.164 INCHES IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1011 OR STEEL COMP 1012 OR STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OVERALL |
| Hole Type and Quantity | 2 TAPPED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 57309 | 3/9 Design control — primary reference U.S. Government activity |
| SMB314808 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-591-2550 is a Nut Spacer,plate, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1420-00-981-9429. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-591-2550: Plate Thickness: 0.125 INCHES NOMINAL IN; Hole Thread Quantity Per Inch: 32; Nut Length: 1.250 INCHES NOMINAL IN; Plate Width: 0.375 INCHES NOMINAL IN. 8 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.