The Nut,plain,knurled, cataloged under National Stock Number 5310-00-550-1809, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-550-1809 |
| Primary Part Number | 5179394 |
| Item Name | Nut,plain,knurled |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment Document and Classification | TT-E-516 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Material Document and Classification | QQ-B-626,COMP 11,1/2 H FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Nut Diameter | 0.625 INCHES NOMINAL IN |
| Nut Thickness | 0.500 INCHES NOMINAL IN |
| Small End Length | 0.312 INCHES NOMINAL IN |
| Small End Diameter | 0.344 INCHES NOMINAL IN |
| Surface Treatment | ENAMEL OVERALL |
| Nut Style | KNURLED |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | COPPER ALLOY 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 |
|---|---|
| 5179394 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5310-00-550-1809 is a Nut,plain,knurled, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-550-1809 has 1 manufacturer part number on file: 5179394 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5310-00-764-0785. Verify interchangeability with system specifications before substitution.
Key specifications for 5179394: Surface Treatment Document and Classification: TT-E-516 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Material Document and Classification: QQ-B-626,COMP 11,1/2 H FED SPEC 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.