The Nut,plain,wing, cataloged under National Stock Number 5310-00-571-9628, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bisco Industries Inc Dba National Precision Products Company Div National Precision Products. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-571-9628 |
| Primary Part Number | 402126-1 |
| Item Name | Nut,plain,wing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bisco Industries Inc Dba National Precision Products Company Div National Precision Products |
| Status | ACTIVE |
| Body Diameter | 0.250 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-N-290,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-35 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | QQ-B-613 FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-626 FED SPEC 1ST MATERIAL RESPONSE OR 66,300 SERIES FED STD 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Surface Treatment | NICKEL OR PASSIVATE OVERALL |
| Nut Style | WING |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | COPPER ALLOY OR STEEL OVERALL |
| Wing Spread Width | 0.594 INCHES MINIMUM AND 0.718 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 402126-1 PRIMARY | Bisco Industries Inc Dba National Precision Products Company Div National Precision Products (USA) |
| Reference | Meaning |
|---|---|
| 402126-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-00-571-9628 is a Nut,plain,wing, manufactured by Bisco Industries Inc Dba National Precision Products Company Div National Precision Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-571-9628 has 1 manufacturer part number on file: 402126-1 (Bisco Industries Inc Dba National Precision Products Company Div National Precision Products).
Key specifications for 402126-1: Body Diameter: 0.250 INCHES MINIMUM AND 0.374 INCHES MAXIMUM IN; Overall Height: 0.282 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-N-290,CL 2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-35 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC). 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.