The Nut,plain,knurled, cataloged under National Stock Number 5310-00-451-1582, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rex Systems Incorporated Dba Rex Systems Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-451-1582 |
| Primary Part Number | 502B135 |
| Item Name | Nut,plain,knurled |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rex Systems Incorporated Dba Rex Systems Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | ASTM A82 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Nut Diameter | 0.250 INCHES NOMINAL IN |
| Nut Thickness | 0.437 INCHES NOMINAL IN |
| Small End Length | 0.406 INCHES NOMINAL IN |
| Small End Diameter | 0.185 INCHES MINIMUM AND 0.186 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND PHOSPHATE OVERALL |
| Nut Style | KNURLED |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Knurl Width | 0.188 INCHES NOMINAL 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 |
|---|---|
| 502B135 PRIMARY | Rex Systems Incorporated Dba Rex Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 502B135 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-451-1582 is a Nut,plain,knurled, manufactured by Rex Systems Incorporated Dba Rex Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-451-1582 has 1 manufacturer part number on file: 502B135 (Rex Systems Incorporated Dba Rex Systems Inc).
Key specifications for 502B135: Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: ASTM A82 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 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.