The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-070-1584, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Div Pratt & Whitney. Government technical data includes 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-070-1584 |
| Primary Part Number | 918989C1 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rtx Corporation Div Pratt & Whitney |
| Status | ACTIVE |
| Thread Series | UNS |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Thread Pitch Diameters | +1.7309 TO 1.7354 INCHES IN |
| Material Document and Classification | SAE 492 GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| Drive Point Width | 0.230 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.767 INCHES IN |
| Nut Diameter | 2.517 INCHES MINIMUM AND 2.532 INCHES MAXIMUM IN |
| Drive Point Depth | 0.094 INCHES NOMINAL IN |
| Undercut Thickness | 0.194 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Thickness | 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| Small End Diameter | 2.141 INCHES NOMINAL IN |
| Surface Treatment | OXIDE OR PHOSPHATE OVERALL EXCEPT INSERT |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL EXCEPT INSERT |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| 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 |
|---|---|
| 918989C1 PRIMARY | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 918989C1 | 5/9 Secondary reference Solar Turbines Incorporated Dba Solar Turbines Incorporated |
| 918989C1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-070-1584 is a Nut,self-Locking,round, manufactured by Rtx Corporation Div Pratt & Whitney, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-070-1584 has 1 manufacturer part number on file: 918989C1 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 918989C1: Thread Series: UNS; Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Thread Pitch Diameters: +1.7309 TO 1.7354 INCHES IN; Material Document and Classification: SAE 492 GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT. 19 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.