The Nut,self-Locking,single Ball Sea, cataloged under National Stock Number 5310-01-589-2313, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies Llc Dba PB Fasteners Div PB Fasteners. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-589-2313 |
| Primary Part Number | TLN1021CPD1-5 |
| Item Name | Nut,self-Locking,single Ball Sea |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners |
| Status | ACTIVE |
| Width Across Flats | 0.376 INCHES MINIMUM IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Height | 0.438 INCHES NOMINAL IN |
| Nut Style | SINGLE BALL SEAT, DOUBLE HEXAGON |
| Thread Quantity Per Inch | 24 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| TLN1021CPD1-5 | Huck International, Inc (USA) |
| TLN1021CPD1-5 | Reid Products Inc. Dba Reid Products Inc (USA) |
| TLN1021CPD1-5 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| TLN1021CPD1-5 | 5/2 Secondary reference U.S. Government activity |
| TLN1021CPD1-5 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-589-2313 is a Nut,self-Locking,single Ball Sea, manufactured by Sps Technologies Llc Dba PB Fasteners Div PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-589-2313 has 3 manufacturer part numbers on file: TLN1021CPD1-5 (Huck International, Inc), TLN1021CPD1-5 (Reid Products Inc. Dba Reid Products Inc), TLN1021CPD1-5 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners).
Key specifications for TLN1021CPD1-5: Width Across Flats: 0.376 INCHES MINIMUM IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN. 8 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.