The Nut Spacer,plate, cataloged under National Stock Number 5310-01-024-4148, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-024-4148 |
| Primary Part Number | ST4M171N4 |
| Item Name | Nut Spacer,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Plate Thickness | 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| Nut Length | 1.122 INCHES MAXIMUM IN |
| Plate Width | 0.650 INCHES NOMINAL IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Countersink Angle | 100.0 DEGREES NOMINAL |
| Material Document and Classification | QQ-A-250/4 TEMPER T81 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.133 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN |
| Mounting Provision Location | OPPOSITE NUT PROJECTION SIDE |
| Distance From Aperture Center to Mounting Hole Center | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Center to Center Distance Between Mounting Holes Along Length | 0.748 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Thru-Hole Diameter | 0.480 INCHES MINIMUM AND 0.490 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE AND PAINT OVERALL |
| Nut Style | PLATE NUT SPACER |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Nut Mounting Provision | COUNTERSUNK HOLES |
| 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 |
|---|---|
| ST4M171N4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST4M171N4 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-024-4148 is a Nut Spacer,plate, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-024-4148 has 1 manufacturer part number on file: ST4M171N4 (The Boeing Company Div Defense).
Key specifications for ST4M171N4: Plate Thickness: 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN; Nut Length: 1.122 INCHES MAXIMUM IN; Plate Width: 0.650 INCHES NOMINAL IN; Mounting Hole Arrangement Style: 2 HOLES. 15 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.