The Nut Spacer,plate, cataloged under National Stock Number 5310-01-005-6725, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-005-6725 |
| Primary Part Number | ST4M172N5 |
| 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 | 1.072 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MMS-425,FSCM 76301 MFR REF 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Countersink Angle | 98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM |
| Material Document and Classification | QQ-A-250/4,ALLOY 2024,TEMPER T81 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Mounting Provision Location | NUT PROJECTION SIDE |
| Distance From Aperture Center to Mounting Hole Center | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Thru-Hole Diameter | 0.570 INCHES MINIMUM AND 0.580 INCHES MAXIMUM IN |
| Surface Treatment | PAINT OR ANODIZE 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 |
|---|---|
| ST4M172N5 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST4M172N5 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-005-6725 is a Nut Spacer,plate, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-005-6725 has 1 manufacturer part number on file: ST4M172N5 (The Boeing Company Div Defense).
Key specifications for ST4M172N5: Plate Thickness: 0.060 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN; Nut Length: 1.072 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MMS-425,FSCM 76301 MFR REF 1ST TREATMENT RESPONSE OR MIL-A-8625 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Mounting Hole Arrangement Style: 2 HOLES. 14 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.