The Nut,plain,round, cataloged under National Stock Number 5310-00-616-6898, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 17 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-616-6898 |
| Primary Part Number | S913B |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 20 |
| Thread Series | UNS |
| Hole Configuration Style | CONFIGURATION J |
| Material Document and Classification | MIL-S-16782 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Nut Counterbore Depth | 0.031 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.688 INCHES IN |
| Nut Diameter | 1.625 INCHES NOMINAL IN |
| Counterbore Diameter | 1.125 INCHES NOMINAL NUT IN |
| Nut Thickness | 0.438 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.250 INCHES NOMINAL IN |
| Nut Style | ROUND |
| Thread Class | 2B |
| Hole Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Quantity Per Inch | 18 |
| Material | STEEL COMP 1010 OR STEEL COMP 1015 OVERALL |
| Hole Type and Quantity | 2 DRILLED AND 1 TAPPED |
| 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 |
|---|---|
| S913B PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| S913B9219 | 5/9 Secondary reference Siemens Energy, Inc. |
| S913B9219 | 5/9 Secondary reference Circor Pumps North America Llc |
NSN 5310-00-616-6898 is a Nut,plain,round, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-616-6898 has 1 manufacturer part number on file: S913B (Circor Pumps North America Llc).
Key specifications for S913B: Hole Thread Quantity Per Inch: 20; Thread Series: UNS; Hole Configuration Style: CONFIGURATION J; Material Document and Classification: MIL-S-16782 MIL SPEC ALL MATERIAL RESPONSES OVERALL. 17 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.