The Nut,plain,knurled, cataloged under National Stock Number 5310-00-440-3355, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Army, United States Department of the Dba Rock Island Arsenal Jmtc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-440-3355 |
| Primary Part Number | 7791021 |
| Item Name | Nut,plain,knurled |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Army, United States Department of the Dba Rock Island Arsenal Jmtc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | D0D-P-16232 TYPE M,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR D0D-P-16232 TYPE Z CLASS 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Hardness Rating | 66.0 ROCKWELL A MINIMUM AND 69.0 ROCKWELL A MAXIMUM |
| Material Document and Classification | QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.086 INCHES IN |
| Nut Diameter | 0.385 INCHES NOMINAL IN |
| Nut Thickness | 0.600 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL |
| Nut Style | KNURLED |
| Thread Class | 2B |
| Thread Quantity Per Inch | 56 |
| Material | STEEL COMP 1137 OR STEEL COMP 1141 OVERALL |
| Knurl Width | 0.197 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7791021 PRIMARY | Army, United States Department of the Dba Rock Island Arsenal Jmtc (USA) |
| Reference | Meaning |
|---|---|
| 5310PL1299612 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 717124417607 | 5/9 Secondary reference Ncb Hungary (honvedsegi Egyseges Termekkod) |
| 5310PL0916994 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-00-440-3355 is a Nut,plain,knurled, manufactured by Army, United States Department of the Dba Rock Island Arsenal Jmtc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-440-3355 has 1 manufacturer part number on file: 7791021 (Army, United States Department of the Dba Rock Island Arsenal Jmtc).
Key specifications for 7791021: Surface Treatment Document and Classification: D0D-P-16232 TYPE M,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE OR D0D-P-16232 TYPE Z CLASS 1 MIL SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 66.0 ROCKWELL A MINIMUM AND 69.0 ROCKWELL A MAXIMUM; Material Document and Classification: QQ-S-624 FED SPEC ALL MATERIAL RESPONSES OVERALL. 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.
NSN 5310-00-440-3355 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.