The Nut,sleeve, cataloged under National Stock Number 5310-00-972-3271, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-972-3271 |
| Primary Part Number | G372-30 |
| Item Name | Nut,sleeve |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Flange Diameter | 0.344 INCHES NOMINAL IN |
| Nut Length | 0.469 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Thickness | 0.062 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Length | 0.157 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Material Document and Classification | QQ-A-225/5,TEMPER T4 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/6,TEMPER T4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/3,TEMPER T4 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.312 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Nut Diameter | 0.217 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.166 INCHES MINIMUM AND 0.170 INCHES MAXIMUM NUT IN |
| Cross-Sectional Shape | ROUND NUT |
| Cross-Sectional Shape | ROUND W/WRENCH FLATS FLANGE |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | SLEEVE |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | ALUMINUM ALLOY 2017 OR ALUMINUM ALLOY 2024 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5310-00-972-3271 is a Nut,sleeve, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-972-3271 has 2 manufacturer part numbers on file: G372-30 (Northrop Grumman Systems Corporation), ML620-30 (Mount Lok Products Inc).
Key specifications for G372-30: Flange Diameter: 0.344 INCHES NOMINAL IN; Nut Length: 0.469 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Thickness: 0.062 INCHES NOMINAL IN. 19 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.